Merge remote-tracking branch 'github/master' into nmaster

14 files changed, 390 insertions, 336 deletions

diff --git a/frontend/beta/js/Clipperz/Base.js b/frontend/beta/js/Clipperz/Base.js
index cf40314..1c6faa1 100644
--- a/frontend/beta/js/Clipperz/Base.js
+++ b/frontend/beta/js/Clipperz/Base.js
@@ -217,64 +217,92 @@ MochiKit.Base.update(Clipperz.Base, {
                 }
 
                 result = MochiKit.Base.evalJSON(aString);
                 
                 return result;
 */
 
         //      return MochiKit.Base.evalJSON(aString);
                 return JSON2.parse(aString);
         },
         
         'serializeJSON': function(anObject) {
         //      return MochiKit.Base.serializeJSON(anObject);
                 return JSON2.stringify(anObject);
         },
 
         //-------------------------------------------------------------------------
 
         'sanitizeString': function(aValue) {
                 var result;
                 
                 if (Clipperz.Base.objectType(aValue) == 'string') {
                         result = aValue;
                         result = result.replace(/</img,"&lt;");
                         result = result.replace(/>/img,"&gt;");
                 } else {
                         result = aValue;
                 }
                 
                 return result;
         },
 
+        'javascriptInjectionPattern': new RegExp("javascript:\/\/\"", "g"),
+        
+        'sanitizeUrl': function(aValue) {
+                        varresult;
+                
+                if ((aValue != null) && this.javascriptInjectionPattern.test(aValue)) {
+                        result = aValue.replace(this.javascriptInjectionPattern, '');
+                        console.log("sanitized url", aValue, result);
+                } else {
+                        result = aValue;
+                }
+
+                return result;
+        },
+
+        'sanitizeFavicon': function(aValue) {
+                        varresult;
+                
+                if ((aValue != null) && this.javascriptInjectionPattern.test(aValue)) {
+                        result = aValue.replace(this.javascriptInjectionPattern, '');
+                        console.log("sanitized favicon", aValue, result);
+                } else {
+                        result = aValue;
+                }
+
+                return result;
+        },
+
         //-------------------------------------------------------------------------
 
         'exception': {
                         'AbstractMethod':       new MochiKit.Base.NamedError("Clipperz.Base.exception.AbstractMethod"),
                         'UnknownType':          new MochiKit.Base.NamedError("Clipperz.Base.exception.UnknownType"),
                         'VulnerabilityIssue':new MochiKit.Base.NamedError("Clipperz.Base.exception.VulnerabilityIssue") 
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 
 });
 
 
 
 MochiKit.Base.registerComparator('Object dummy comparator',
         function(a, b) {
                 return ((a.constructor == Object) && (b.constructor == Object));
         },
         function(a, b) {
                 var result;
                 var aKeys;
                 var bKeys;
                 
 //MochiKit.Logging.logDebug(">>> comparator");
 //MochiKit.Logging.logDebug("- a: " + Clipperz.Base.serializeJSON(a));
 //MochiKit.Logging.logDebug("- b: " + Clipperz.Base.serializeJSON(a));
                 aKeys = MochiKit.Base.keys(a).sort();
                 bKeys = MochiKit.Base.keys(b).sort();
                 
                 result = MochiKit.Base.compare(aKeys, bKeys);
 //if (result != 0) {
diff --git a/frontend/beta/js/Clipperz/Crypto/PRNG.js b/frontend/beta/js/Clipperz/Crypto/PRNG.js
index b5c3f8a..6fdeca4 100644
--- a/frontend/beta/js/Clipperz/Crypto/PRNG.js
+++ b/frontend/beta/js/Clipperz/Crypto/PRNG.js
@@ -168,246 +168,198 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource = function(args) {
 
 Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
         'intervalTime': function() {
                 return this._intervalTime;
         },
         
         //-------------------------------------------------------------------------
 
         'collectEntropy': function() {
                         varnow;
                         varentropyByte;
                 var intervalTime;
                 now = new Date();
                 entropyByte = (now.getTime() & 0xff);
                 
                 intervalTime = this.intervalTime();
                 if (this.boostMode() == true) {
                         intervalTime = intervalTime / 9;
                 }
                 
                 this.updateGeneratorWithValue(entropyByte);
                 setTimeout(this.collectEntropy, intervalTime);
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBits': function() {
                 return 5;
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) {
         args = args || {};
 
         Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
         this._numberOfBitsToCollectAtEachEvent = 4;
         this._randomBitsCollector = 0;
         this._numberOfRandomBitsCollected = 0;
         
         MochiKit.Signal.connect(document, 'onmousemove', this, 'collectEntropy');
 
         return this;
 }
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
         //-------------------------------------------------------------------------
 
         'numberOfBitsToCollectAtEachEvent': function() {
                 return this._numberOfBitsToCollectAtEachEvent;
         },
         
         //-------------------------------------------------------------------------
 
         'randomBitsCollector': function() {
                 return this._randomBitsCollector;
         },
 
         'setRandomBitsCollector': function(aValue) {
                 this._randomBitsCollector = aValue;
         },
 
         'appendRandomBitsToRandomBitsCollector': function(aValue) {
                 var collectedBits;
                 var numberOfRandomBitsCollected;
                 
                 numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
-                collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
-                this.setRandomBitsCollector(collectetBits);
+                collectedBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
+                this.setRandomBitsCollector(collectedBits);
                 numberOfRandomBitsCollected += this.numberOfBitsToCollectAtEachEvent();
                 
                 if (numberOfRandomBitsCollected == 8) {
-                        this.updateGeneratorWithValue(collectetBits);
+                        this.updateGeneratorWithValue(collectedBits);
                         numberOfRandomBitsCollected = 0;
                         this.setRandomBitsCollector(0);
                 }
                 
                 this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBitsCollected': function() {
                 return this._numberOfRandomBitsCollected;
         },
 
         'setNumberOfRandomBitsCollected': function(aValue) {
                 this._numberOfRandomBitsCollected = aValue;
         },
 
         //-------------------------------------------------------------------------
 
         'collectEntropy': function(anEvent) {
                 var mouseLocation;
                 var randomBit;
                 var mask;
                 
                 mask = 0xffffffff >>> (32 - this.numberOfBitsToCollectAtEachEvent());
                 
                 mouseLocation = anEvent.mouse().client;
                 randomBit = ((mouseLocation.x ^ mouseLocation.y) & mask);
                 this.appendRandomBitsToRandomBitsCollector(randomBit)
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBits': function() {
                 return 1;
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
-Clipperz.Crypto.PRNG.KeyboardRandomnessSource = function(args) {
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource = function(args) {
         args = args || {};
-        Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
-        this._randomBitsCollector = 0;
-        this._numberOfRandomBitsCollected = 0;
+        this._intervalTime = args.intervalTime || 1000;
+        this._browserCrypto = args.browserCrypto;
         
-        MochiKit.Signal.connect(document, 'onkeypress', this, 'collectEntropy');
+        Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
+        this.collectEntropy();
         return this;
 }
 
-Clipperz.Crypto.PRNG.KeyboardRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
-
-        //-------------------------------------------------------------------------
-
-        'randomBitsCollector': function() {
-                return this._randomBitsCollector;
-        },
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
-        'setRandomBitsCollector': function(aValue) {
-                this._randomBitsCollector = aValue;
+        'intervalTime': function() {
+                return this._intervalTime;
         },
-
-        'appendRandomBitToRandomBitsCollector': function(aValue) {
-                var collectedBits;
-                var numberOfRandomBitsCollected;
-                
-                numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
-                collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
-                this.setRandomBitsCollector(collectetBits);
-                numberOfRandomBitsCollected ++;
-                
-                if (numberOfRandomBitsCollected == 8) {
-                        this.updateGeneratorWithValue(collectetBits);
-                        numberOfRandomBitsCollected = 0;
-                        this.setRandomBitsCollector(0);
-                }
-                
-                this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
+        
+        'browserCrypto': function () {
+                return this._browserCrypto;
         },
         
         //-------------------------------------------------------------------------
 
-        'numberOfRandomBitsCollected': function() {
-                return this._numberOfRandomBitsCollected;
-        },
-
-        'setNumberOfRandomBitsCollected': function(aValue) {
-                this._numberOfRandomBitsCollected = aValue;
-        },
+        'collectEntropy': function() {
+                        varbytesToCollect;
 
-        //-------------------------------------------------------------------------
+                if (this.boostMode() == true) {
+                        bytesToCollect = 64;
+                } else {
+                        bytesToCollect = 8;
+                }
 
-        'collectEntropy': function(anEvent) {
-/*
-                var mouseLocation;
-                var randomBit;
-                
-                mouseLocation = anEvent.mouse().client;
-                        
-                randomBit = ((mouseLocation.x ^ mouseLocation.y) & 0x1);
-                this.appendRandomBitToRandomBitsCollector(randomBit);
-*/
-        },
-        
-        //-------------------------------------------------------------------------
+                var randomValuesArray = new Uint8Array(bytesToCollect);
+                this.browserCrypto().getRandomValues(randomValuesArray);
+                for (var i = 0; i < randomValuesArray.length; i++) {
+                        this.updateGeneratorWithValue(randomValuesArray[i]);
+                }
 
-        'numberOfRandomBits': function() {
-                return 1;
+                setTimeout(this.collectEntropy, this.intervalTime());
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Fortuna = function(args) {
                 vari,c;
         
         args = args || {};
 
         this._key = args.seed || null;
         if (this._key == null) {
                 this._counter = 0;
                 this._key = new Clipperz.ByteArray();
         } else {
                 this._counter = 1;
         }
         
         this._aesKey = null;
         
         this._firstPoolReseedLevel = args.firstPoolReseedLevel || 32 || 64;
         this._numberOfEntropyAccumulators = args.numberOfEntropyAccumulators || 32;
         
         this._accumulators = [];
         c = this.numberOfEntropyAccumulators();
         for (i=0; i<c; i++) {
                 this._accumulators.push(new Clipperz.Crypto.PRNG.EntropyAccumulator());
         }
 
         this._randomnessSources = [];
         this._reseedCounter = 0;
         
@@ -578,101 +530,95 @@ MochiKit.Logging.logWarning("Fortuna generator has not enough entropy, yet!");
                                 this.reseed();
                         }
                 }
         },
 
         //-------------------------------------------------------------------------
         
         'numberOfEntropyAccumulators': function() {
                 return this._numberOfEntropyAccumulators;
         },
 
         //-------------------------------------------------------------------------
 
         'randomnessSources': function() {
                 return this._randomnessSources;
         },
         
         'addRandomnessSource': function(aRandomnessSource) {
                 aRandomnessSource.setGenerator(this);
                 aRandomnessSource.setSourceId(this.randomnessSources().length);
                 this.randomnessSources().push(aRandomnessSource);
                 
                 if (this.isReadyToGenerateRandomValues() == false) {
                         aRandomnessSource.setBoostMode(true);
                 }
         },
 
         //-------------------------------------------------------------------------
 
         'deferredEntropyCollection': function(aValue) {
                 var result;
 
-//MochiKit.Logging.logDebug(">>> PRNG.deferredEntropyCollection");
 
                 if (this.isReadyToGenerateRandomValues()) {
-//MochiKit.Logging.logDebug("--- PRNG.deferredEntropyCollection - 1");
                         result = aValue;
                 } else {
-//MochiKit.Logging.logDebug("--- PRNG.deferredEntropyCollection - 2");
                         var deferredResult;
 
                         Clipperz.NotificationCenter.notify(this, 'updatedProgressState', 'collectingEntropy', true);
 
                         deferredResult = new MochiKit.Async.Deferred();
-        //              deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("1.2.1 - PRNG.deferredEntropyCollection - 1: " + res); return res;});
                         deferredResult.addCallback(MochiKit.Base.partial(MochiKit.Async.succeed, aValue));
-        //              deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("1.2.2 - PRNG.deferredEntropyCollection - 2: " + res); return res;});
                         MochiKit.Signal.connect(this,
                                                                         'readyToGenerateRandomBytes',
                                                                         deferredResult,
                                                                         'callback');
                                                                         
                         result = deferredResult;
                 }
-//MochiKit.Logging.logDebug("<<< PRNG.deferredEntropyCollection - result: " + result);
 
                 return result;
         },
         
         //-------------------------------------------------------------------------
 
         'fastEntropyAccumulationForTestingPurpose': function() {
                 while (! this.isReadyToGenerateRandomValues()) {
                         this.addRandomByte(Math.floor(Math.random() * 32), Math.floor(Math.random() * 32), Math.floor(Math.random() * 256));
                 }
         },
         
         //-------------------------------------------------------------------------
-
+/*
         'dump': function(appendToDoc) {
                 var tbl;
                 var i,c;
                 
                 tbl = document.createElement("table");
                 tbl.border = 0;
                 with (tbl.style) {
                         border = "1px solid lightgrey";
                         fontFamily = 'Helvetica, Arial, sans-serif';
                         fontSize = '8pt';
                         //borderCollapse = "collapse";
                 }
                 var hdr = tbl.createTHead();
                 var hdrtr = hdr.insertRow(0);
                 // document.createElement("tr");
                 {
                         var ntd;
                         
                         ntd = hdrtr.insertCell(0);
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
                         ntd.appendChild(document.createTextNode("#"));
 
                         ntd = hdrtr.insertCell(1);
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
                         ntd.appendChild(document.createTextNode("s"));
 
                         ntd = hdrtr.insertCell(2);
                         ntd.colSpan = this.firstPoolReseedLevel();
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
@@ -720,65 +666,65 @@ MochiKit.Logging.logWarning("Fortuna generator has not enough entropy, yet!");
                                 }
                                 
                                 if (ii == (this.firstPoolReseedLevel() - 1)) {
                                         bdytd.style.borderRight = "1px solid lightgrey";
                                 }
                                 
                                 bdytd.appendChild(document.createTextNode(cellText));
                         }
                         
                 }
                 
 
                 if (appendToDoc) {
                         var ne = document.createElement("div");
                         ne.id = "entropyGeneratorStatus";
                         with (ne.style) {
                                 fontFamily = "Courier New, monospace";
                                 fontSize = "12px";
                                 lineHeight = "16px";
                                 borderTop = "1px solid black";
                                 padding = "10px";
                         }
                         if (document.getElementById(ne.id)) {
                                 MochiKit.DOM.swapDOM(ne.id, ne);
                         } else {
                                 document.body.appendChild(ne);
                         }
                         ne.appendChild(tbl);
                 }
 
                 return tbl;
         },
-
+*/
         //-----------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Random = function(args) {
         args = args || {};
         //MochiKit.Base.bindMethods(this);
 
         return this;
 }
 
 Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, {
 
         'toString': function() {
                 return "Clipperz.Crypto.PRNG.Random";
         },
 
         //-------------------------------------------------------------------------
 
         'getRandomBytes': function(aSize) {
 //Clipperz.Profile.start("Clipperz.Crypto.PRNG.Random.getRandomBytes");
                         varresult;
                 var i,c;
                 
                 result = new Clipperz.ByteArray()
                 c = aSize || 1;
                 for (i=0; i<c; i++) {
                         result.appendByte((Math.random()*255) & 0xff);
                 }
                 
@@ -795,55 +741,65 @@ Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, {
 _clipperz_crypt_prng_defaultPRNG = null;
 
 Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
         if (_clipperz_crypt_prng_defaultPRNG == null) {
                 _clipperz_crypt_prng_defaultPRNG = new Clipperz.Crypto.PRNG.Fortuna();
 
                 //.............................................................
                 //
                         //      TimeRandomnessSource
                 //
                 //.............................................................
                 {
                         var newRandomnessSource;
                 
                         newRandomnessSource = new Clipperz.Crypto.PRNG.TimeRandomnessSource({intervalTime:111});
                         _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
                 }
 
                 //.............................................................
                 //
                         //      MouseRandomnessSource
                 //
                 //.............................................................
                 {
                                 varnewRandomnessSource;
                         
                         newRandomnessSource = new Clipperz.Crypto.PRNG.MouseRandomnessSource();
                         _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
                 }
 
                 //.............................................................
                 //
-                        //      KeyboardRandomnessSource
+                        //      CryptoRandomRandomnessSource
                 //
                 //.............................................................
                 {
                                 varnewRandomnessSource;
+                                varbrowserCrypto;
                         
-                        newRandomnessSource = new Clipperz.Crypto.PRNG.KeyboardRandomnessSource();
-                        _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
+                        if (window.crypto && window.crypto.getRandomValues) {
+                                browserCrypto = window.crypto;
+                        } else if (window.msCrypto && window.msCrypto.getRandomValues) {
+                                browserCrypto = window.msCrypto;
+                        } else {
+                                browserCrypto = null;
+                        }
+        
+                        if (browserCrypto != null) {
+                                newRandomnessSource = new Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource({'browserCrypto':browserCrypto});
+                                _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
+                        }
                 }
-
         }
 
         return _clipperz_crypt_prng_defaultPRNG;
 };
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.exception =  {
         NotEnoughEntropy: new MochiKit.Base.NamedError("Clipperz.Crypto.PRNG.exception.NotEnoughEntropy") 
 };
 
 
 MochiKit.DOM.addLoadEvent(Clipperz.Crypto.PRNG.defaultRandomGenerator);
diff --git a/frontend/beta/js/Clipperz/Crypto/SRP.js b/frontend/beta/js/Clipperz/Crypto/SRP.js
index 8cc80ba..8c522ad 100644
--- a/frontend/beta/js/Clipperz/Crypto/SRP.js
+++ b/frontend/beta/js/Clipperz/Crypto/SRP.js
@@ -15,84 +15,95 @@ refer to http://www.clipperz.com.
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
 try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!";
 }  
 
 try { if (typeof(Clipperz.Crypto.BigInt) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.SRP depends on Clipperz.Crypto.BigInt!";
 }  
 
 try { if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.SRP depends on Clipperz.Crypto.PRNG!";
 }  
 
 if (typeof(Clipperz.Crypto.SRP) == 'undefined') { Clipperz.Crypto.SRP = {}; }
 
 Clipperz.Crypto.SRP.VERSION = "0.1";
 Clipperz.Crypto.SRP.NAME = "Clipperz.Crypto.SRP";
 
 //#############################################################################
 
 MochiKit.Base.update(Clipperz.Crypto.SRP, {
 
         '_n': null,
         '_g': null,
+        '_k': null,
+        
         //-------------------------------------------------------------------------
 
         'n': function() {
                 if (Clipperz.Crypto.SRP._n == null) {
                          Clipperz.Crypto.SRP._n = new Clipperz.Crypto.BigInt("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3", 16);
                 }
                 
                 return Clipperz.Crypto.SRP._n;
         },
 
         //-------------------------------------------------------------------------
 
         'g': function() {
                 if (Clipperz.Crypto.SRP._g == null) {
                                 Clipperz.Crypto.SRP._g = new Clipperz.Crypto.BigInt(2);         //eventually 5 (as suggested on the Diffi-Helmann documentation)
                 }
                 
                 return Clipperz.Crypto.SRP._g;
         },
 
+        'k': function() {
+                if (Clipperz.Crypto.SRP._k == null) {
+        //              Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt(this.stringHash(this.n().asString() + this.g().asString()), 16);
+                        Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt("64398bff522814e306a97cb9bfc4364b7eed16a8c17c5208a40a2bad2933c8e", 16);
+                }
+                
+                return Clipperz.Crypto.SRP._k;
+        },
+        
         //-----------------------------------------------------------------------------
 
         'exception': {
                 'InvalidValue': new MochiKit.Base.NamedError("Clipperz.Crypto.SRP.exception.InvalidValue") 
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 
 });
 
 //#############################################################################
 //
         //      S R P   C o n n e c t i o n     version 1.0
 //
 //=============================================================================
 Clipperz.Crypto.SRP.Connection = function (args) {
         args = args || {};
 
         this._C = args.C;
         this._P = args.P;
         this.hash = args.hash;
 
         this._a = null;
         this._A = null;
         
         this._s = null;
         this._B = null;
 
         this._x = null;
         
         this._u = null;
@@ -100,186 +111,194 @@ Clipperz.Crypto.SRP.Connection = function (args) {
         this._M1 = null;
         this._M2 = null;
         
         this._sessionKey = null;
 
         return this;
 }
 
 Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 
         'toString': function () {
                 return "Clipperz.Crypto.SRP.Connection (username: " + this.username() + "). Status: " + this.statusDescription();
         },
 
         //-------------------------------------------------------------------------
 
         'C': function () {
                 return this._C;
         },
 
         //-------------------------------------------------------------------------
 
         'P': function () {
                 return this._P;
         },
 
         //-------------------------------------------------------------------------
 
         'a': function () {
                 if (this._a == null) {
                         this._a = new Clipperz.Crypto.BigInt(Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32).toHexString().substring(2), 16);
         //              this._a = new Clipperz.Crypto.BigInt("37532428169486597638072888476611365392249575518156687476805936694442691012367", 10);
-//MochiKit.Logging.logDebug("SRP a: " + this._a);
                 }
                 
                 return this._a;
         },
 
         //-------------------------------------------------------------------------
 
         'A': function () {
                 if (this._A == null) {
-                                //Warning: this value should be strictly greater than zero: how should we perform this check?
+                                //Warning: this value should be strictly greater than zero
                         this._A = Clipperz.Crypto.SRP.g().powerModule(this.a(), Clipperz.Crypto.SRP.n());
-                        
-                        if (this._A.equals(0)) {
-MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
+                        if (this._A.equals(0) || negative(this._A)) {
+                                MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
                                 throw Clipperz.Crypto.SRP.exception.InvalidValue;
                         }
-//MochiKit.Logging.logDebug("SRP A: " + this._A);
                 }
                 
                 return this._A;
         },
 
         //-------------------------------------------------------------------------
 
         's': function () {
                 return this._s;
-//MochiKit.Logging.logDebug("SRP s: " + this._S);
         },
 
         'set_s': function(aValue) {
                 this._s = aValue;
         },
         
         //-------------------------------------------------------------------------
 
         'B': function () {
                 return this._B;
         },
 
         'set_B': function(aValue) {
-                        //Warning: this value should be strictly greater than zero: how should we perform this check?
-                if (! aValue.equals(0)) {
-                        this._B = aValue;
-//MochiKit.Logging.logDebug("SRP B: " + this._B);
-                } else {
-MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
+                        //Warning: this value should be strictly greater than zero
+                this._B = aValue;
+                if (this._B.equals(0) || negative(this._B)) {
+                        MochiKit.Logging.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
                         throw Clipperz.Crypto.SRP.exception.InvalidValue;
                 }
         },
         
         //-------------------------------------------------------------------------
 
         'x': function () {
                 if (this._x == null) {
                         this._x = new Clipperz.Crypto.BigInt(this.stringHash(this.s().asString(16, 64) + this.P()), 16);
-//MochiKit.Logging.logDebug("SRP x: " + this._x);
                 }
                 
                 return this._x;
         },
 
         //-------------------------------------------------------------------------
 
         'u': function () {
                 if (this._u == null) {
-                        this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.B().asString()), 16);
-//MochiKit.Logging.logDebug("SRP u: " + this._u);
+                        this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.A().asString() + this.B().asString()), 16);
                 }
                 
                 return this._u;
         },
 
         //-------------------------------------------------------------------------
 
         'S': function () {
                 if (this._S == null) {
                         var bigint;
                                 varsrp;
 
                         bigint = Clipperz.Crypto.BigInt;
                                 srp =  Clipperz.Crypto.SRP;
 
                                 this._S =bigint.powerModule(
-                                                                bigint.subtract(this.B(), bigint.powerModule(srp.g(), this.x(), srp.n())),
-                                                                bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
-                                                                srp.n()
+                                                        bigint.subtract(
+                                                                this.B(),
+                                                                bigint.multiply(
+                                                                        Clipperz.Crypto.SRP.k(),
+                                                                        bigint.powerModule(srp.g(), this.x(), srp.n())
+                                                                )
+                                                        ),
+                                                        bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
+                                                        srp.n()
                                                 )
-//MochiKit.Logging.logDebug("SRP S: " + this._S);
                 }
                 
                 return this._S;
         },
 
         //-------------------------------------------------------------------------
 
         'K': function () {
                 if (this._K == null) {
                         this._K = this.stringHash(this.S().asString());
-//MochiKit.Logging.logDebug("SRP K: " + this._K);
                 }
                 
                 return this._K;
         },
 
         //-------------------------------------------------------------------------
 
         'M1': function () {
                 if (this._M1 == null) {
-                        this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
-//MochiKit.Logging.logDebug("SRP M1: " + this._M1);
+        //              this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+
+                                //http://srp.stanford.edu/design.html
+                                //User -> Host:  M = H(H(N) xor H(g), H(I), s, A, B, K)
+
+                        this._M1 = this.stringHash(
+                                "597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+                                this.stringHash(this.C()) +
+                                this.s().asString() +
+                                this.A().asString() +
+                                this.B().asString() +
+                                this.K()
+                        );
+//console.log("M1", this._M1);
                 }
                 
                 return this._M1;
         },
 
         //-------------------------------------------------------------------------
 
         'M2': function () {
                 if (this._M2 == null) {
                         this._M2 = this.stringHash(this.A().asString(10) + this.M1() + this.K());
-//MochiKit.Logging.logDebug("SRP M2: " + this._M2);
+//console.log("M2", this._M2);
                 }
                 
                 return this._M2;
         },
 
         //=========================================================================
 
         'serverSideCredentialsWithSalt': function(aSalt) {
                 var result;
                 var s, x, v;
                 
                 s = aSalt;
                 x = this.stringHash(s + this.P());
                 v = Clipperz.Crypto.SRP.g().powerModule(new Clipperz.Crypto.BigInt(x, 16), Clipperz.Crypto.SRP.n());
 
                 result = {};
                 result['C'] = this.C();
                 result['s'] = s;
                 result['v'] = v.asString(16);
                 
                 return result;
         },
         
         'serverSideCredentials': function() {
                 var result;
                 var s;
                 
                 s = Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32).toHexString().substring(2);
 
                 result = this.serverSideCredentialsWithSalt(s);
                 
                 return result;
diff --git a/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js b/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js
index 2295d3f..369b9ce 100644
--- a/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js
+++ b/frontend/beta/js/Clipperz/PM/BookmarkletProcessor.js
@@ -109,65 +109,65 @@ Clipperz.PM.BookmarkletProcessor.prototype = MochiKit.Base.update(null, {
         },
 
         //-------------------------------------------------------------------------
 
         'fields': function() {
                 return this.configuration().form.inputs;
         },
 
         //-------------------------------------------------------------------------
 
         'editableFields': function() {
                 if (this._editableFields == null) {
                         this._editableFields = MochiKit.Base.filter(function(aField) {
                                 var result;
                                 var type;
                 
                                 type = aField['type'].toLowerCase();
                                 result = ((type != 'hidden') && (type != 'submit') && (type != 'checkbox') && (type != 'radio') && (type != 'select'));
                 
                                 return result;
                         }, this.fields())
                 }
                 
                 return this._editableFields;
         },
 
         //-------------------------------------------------------------------------
 
         'hostname': function() {
                 if (this._hostname == null) {
                         var actionUrl;
                         
-                        actionUrl = this.configuration()['form']['attributes']['action'];
+                        actionUrl = Clipperz.Base.sanitizeUrl(this.configuration()['form']['attributes']['action']);
 //MochiKit.Logging.logDebug("+++ actionUrl: " + actionUrl);
                         this._hostname = actionUrl.replace(/^https?:\/\/([^\/]*)\/.*/, '$1');
                 }
                 
                 return this._hostname;
         },
         
         'favicon': function() {
                 if (this._favicon == null) {
                         this._favicon = "http://" + this.hostname() + "/favicon.ico";
 //MochiKit.Logging.logDebug("+++ favicon: " + this._favicon);
                 }
                 
                 return this._favicon;
         },
         
         //-------------------------------------------------------------------------
         
         'record': function() {
                 if (this._record == null) {
                         var record;
                         var recordVersion;
                         var directLogin;
                         var bindings;
                         var i,c;
                         
                         record = new Clipperz.PM.DataModel.Record({
                                                                 label:this.recordTitle(),
                                                                 notes:"",
                                                                 user:this.user()
                         });
                         recordVersion = new Clipperz.PM.DataModel.RecordVersion(record, {})
diff --git a/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js b/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js
index 0e4640e..a5a4697 100644
--- a/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js
+++ b/frontend/beta/js/Clipperz/PM/Components/RecordDetail/DirectLoginBindingComponent.js
@@ -71,99 +71,99 @@ YAHOO.extendX(Clipperz.PM.Components.RecordDetail.DirectLoginBindingComponent, C
 //MochiKit.Logging.logDebug("--- DirectLoginBindingComponent.render - 1");
                 Clipperz.YUI.DomHelper.append(this.element().dom, {tag:'td', cls:'directLoginBindingValueTD', children:[
                         {tag:'div', id:this.getId('editModeBox'), children:[
                                 {tag:'select', id:this.getId('select'), children:this.recordFieldOptions()}
                         ]},
                         {tag:'div', id:this.getId('viewModeBox'), children:[
                                 {tag:'span', id:this.getId('viewValue'), html:""}
                         ]}
                 ]});
 //MochiKit.Logging.logDebug("--- DirectLoginBindingComponent.render - 2");
                 this.getElement('editModeBox').setVisibilityMode(YAHOO.ext.Element.DISPLAY);
                 this.getElement('viewModeBox').setVisibilityMode(YAHOO.ext.Element.DISPLAY);
 
                 this.update();
 //MochiKit.Logging.logDebug("<<< DirectLoginBindingComponent.render");
         },
 
         //-------------------------------------------------------------------------
 
         'recordFieldOptions': function() {
                         varresult;
                 var option;
                         varrecordFieldKey;
                         varrecordFields;
 
 //MochiKit.Logging.logDebug(">>> DirectLoginBindingComponent.recordFieldOptions");
                 recordFields = this.directLoginBinding().directLogin().record().currentVersion().fields();
                 result = [];
                 option = {tag:'option', value:null, html:'---'};
                 result.push(option);
                 for (recordFieldKey in recordFields) {
         //TODO: remove the value: field and replace it with element.dom.value = <some value>
-                        option = {tag:'option', value:recordFieldKey, html:recordFields[recordFieldKey].label()}
+                        option = {tag:'option', value:recordFieldKey, html:Clipperz.Base.sanitizeString(recordFields[recordFieldKey].label())}
                         if (recordFieldKey == this.directLoginBinding().fieldKey()) {
                                 option['selected'] = true;
                         }
                         result.push(option);
                 }
 //MochiKit.Logging.logDebug("<<< DirectLoginBindingComponent.recordFieldOptions");
                 
                 return result;
         },
 
         //-------------------------------------------------------------------------
 
         'syncAndUpdateEditMode': function() {
                 this.synchronizeComponentValues();
                 this.updateEditMode();
         },
         
         'updateEditMode': function() {
                         varselectElementBox;
 
 //MochiKit.Logging.logDebug(">>> DirectLoginBindingComponent.updateEditMode");
                 this.getElement('viewModeBox').hide();
 
                 selectElementBox = this.getElement('editModeBox');
                 selectElementBox.update("");
 
                 Clipperz.YUI.DomHelper.append(selectElementBox.dom, {tag:'select', id:this.getId('select'), children:this.recordFieldOptions()});
 
 /*
                 selectElement = this.getElement('select');
                 
                 selectElement.update("");
                 MochiKit.Iter.forEach(this.recordFieldOptions(), function(anOption) {
                         Clipperz.YUI.DomHelper.append(selectElement.dom, anOption);
                 });
 */
 
 
                 this.getElement('editModeBox').show();
 //MochiKit.Logging.logDebug("<<< DirectLoginBindingComponent.updateEditMode");
         },
         
         //-------------------------------------------------------------------------
 
         'updateViewMode': function() {
 //MochiKit.Logging.logDebug(">>> DirectLoginBindingComponent.updateViewMode");
                 this.getElement('editModeBox').hide();
                 this.getElement('viewModeBox').show();
 
-                this.getElement('viewValue').update(this.directLoginBinding().field().label());
+                this.getElement('viewValue').update(Clipperz.Base.sanitizeString(this.directLoginBinding().field().label()));
 //MochiKit.Logging.logDebug("<<< DirectLoginBindingComponent.updateViewMode");
         },
 
         //-------------------------------------------------------------------------
 
         'synchronizeComponentValues': function() {
 //MochiKit.Logging.logDebug(">>> DirectLoginBindingComponent.synchronizeComponentValues")
 //MochiKit.Logging.logDebug("--- DirectLoginBindingComponent.synchronizeComponentValues - 1 - " + this.getId('select'));
                 this.directLoginBinding().setFieldKey(this.getDom('select').value);
 //MochiKit.Logging.logDebug("<<< DirectLoginBindingComponent.synchronizeComponentValues");
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
diff --git a/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js b/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js
index c0cfa3c..56d9d59 100644
--- a/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js
+++ b/frontend/beta/js/Clipperz/PM/DataModel/DirectLogin.js
@@ -9,163 +9,171 @@ refer to http://www.clipperz.com.
 * Clipperz is free software: you can redistribute it and/or modify it
   under the terms of the GNU Affero General Public License as published
   by the Free Software Foundation, either version 3 of the License, or 
   (at your option) any later version.
 
 * Clipperz is distributed in the hope that it will be useful, but 
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
 if (typeof(Clipperz) == 'undefined') { Clipperz = {}; }
 if (typeof(Clipperz.PM) == 'undefined') { Clipperz.PM = {}; }
 if (typeof(Clipperz.PM.DataModel) == 'undefined') { Clipperz.PM.DataModel = {}; }
 
 
 //#############################################################################
 
 Clipperz.PM.DataModel.DirectLogin = function(args) {
 //MochiKit.Logging.logDebug(">>> new Clipperz.PM.DataModel.DirectLogin");
 //console.log(">>> new Clipperz.PM.DataModel.DirectLogin - args: %o", args);
 //console.log("--- formData: %s", Clipperz.Base.serializeJSON(args.formData));
         args = args || {};
 
 //MochiKit.Logging.logDebug("--- new Clipperz.PM.DataModel.DirectLogin - args: " + Clipperz.Base.serializeJSON(MochiKit.Base.keys(args)));
         this._record = args.record || null;
         this._label = args.label || "unnamed record"
         this._reference = args.reference || Clipperz.PM.Crypto.randomKey();
-        this._favicon = args.favicon || null;
+        this._favicon = Clipperz.Base.sanitizeFavicon(args.favicon) || null;
         this._bookmarkletVersion = args.bookmarkletVersion || "0.1";
 
         this._directLoginInputs = null;
         
         this._formValues = args.formValues || {};
         this.setFormData(args.formData || null);
 //console.log("=== formData: %o", this.formData());
 
         if (args.legacyBindingData == null) {
                 this.setBindingData(args.bindingData || null);
         } else {
                 this.setLegacyBindingData(args.legacyBindingData);
         }
 
         this._fixedFavicon = null;
         
         //this._formValues = args.formValues || (this.hasValuesToSet() ? {} : null);
 //MochiKit.Logging.logDebug("<<< new Clipperz.PM.DataModel.DirectLogin");
         
         return this;
 }
 
 Clipperz.PM.DataModel.DirectLogin.prototype = MochiKit.Base.update(null, {
 
         'remove': function() {
                 this.record().removeDirectLogin(this);
         },
         
         //-------------------------------------------------------------------------
 
         'record': function() {
                 return this._record;
         },
 
         //-------------------------------------------------------------------------
 
         'user': function() {
                 return this.record().user();
         },
         
         //-------------------------------------------------------------------------
 
         'reference': function() {
                 return this._reference;
         },
 
         //-------------------------------------------------------------------------
 
         'label': function() {
                 return this._label;
         },
 
         'setLabel': function(aValue) {
                 this._label = aValue;
         },
         
         //-------------------------------------------------------------------------
 
         'favicon': function() {
                 if (this._favicon == null) {
                                 varactionUrl;
                         var hostname;
                         
-                        actionUrl = this.formData()['attributes']['action'];
+                        actionUrl = this.action();
                         hostname = actionUrl.replace(/^https?:\/\/([^\/]*)\/.*/, '$1');
-                        this._favicon = "http://" + hostname + "/favicon.ico";
+                        this._favicon = Clipperz.Base.sanitizeFavicon("http://" + hostname + "/favicon.ico");
                 }
 
                 return this._favicon;
         },
 
         //-------------------------------------------------------------------------
 
         'fixedFavicon': function() {
                 var result;
                 
                 if (this._fixedFavicon == null) {
                         result = this.favicon();
 
                         if (Clipperz_IEisBroken) {
                                 if (this.user().preferences().disableUnsecureFaviconLoadingForIE()) {
                                         if (result.indexOf('https://') != 0) {
                                                 result = Clipperz.PM.Strings['defaultFaviconUrl_IE'];
                                                 this.setFixedFavicon(result);
                                         }
                                 }
                         }
                 } else {
                         result = this._fixedFavicon;
                 }
                 
                 return result;
         },
 
         'setFixedFavicon': function(aValue) {
                 this._fixedFavicon = aValue;
         },
         
+        'action': function () {
+                        varresult;
+                
+                result = Clipperz.Base.sanitizeUrl(this.formData()['attributes']['action']);
+                
+                return result;
+        },
+        
         //-------------------------------------------------------------------------
 
         'bookmarkletVersion': function() {
                 return this._bookmarkletVersion;
         },
         
         'setBookmarkletVersion': function(aValue) {
                 this._bookmarkletVersion = aValue;
         },
         
         //-------------------------------------------------------------------------
 
         'formData': function() {
                 return this._formData;
         },
 
         'setFormData': function(aValue) {
                 var formData;
                 
 //MochiKit.Logging.logDebug(">>> DirectLogin.setFormData - " + Clipperz.Base.serializeJSON(aValue));
                 switch (this.bookmarkletVersion()) {
                         case "0.2":
                                 formData = aValue;
                                 break;
                         case "0.1":
 //MochiKit.Logging.logDebug("--- DirectLogin.setFormData - fixing form data from bookmarklet version 0.1");
                                 formData = this.fixFormDataFromBookmarkletVersion_0_1(aValue);
                                 break;
                 }
 
                 this._formData = aValue;
                 this.setBookmarkletVersion("0.2");
@@ -413,112 +421,112 @@ Clipperz.PM.DataModel.DirectLogin.prototype = MochiKit.Base.update(null, {
                                 completeUrl = url;
                         } else {
                                 var username;
                                 var password;
 
                                 username = this.bindings()['username'].field().value();
                                 password = this.bindings()['password'].field().value();
 
                                 /(^https?\:\/\/)?(.*)/.test(url);
 
                                 completeUrl = RegExp.$1 + username + ':' + password + '@' + RegExp.$2;
                         }
                         
                         MochiKit.DOM.currentWindow().location.href = completeUrl;
                 }, this));
         },
         
         //-------------------------------------------------------------------------
 
         'runSubmitFormDirectLogin': function(aWindow) {
                 MochiKit.DOM.withWindow(aWindow, MochiKit.Base.bind(function() {
                         var formElement;
                                 varformSubmitFunction;
                         var submitButtons;
                         
 //MochiKit.Logging.logDebug("### runDirectLogin - 3");
         //              MochiKit.DOM.currentDocument().write('<html><head><title>' + this.label() + '</title><META http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body></body></html>')
 //MochiKit.Logging.logDebug("### runDirectLogin - 3.1");
                         MochiKit.DOM.appendChildNodes(MochiKit.DOM.currentDocument().body, MochiKit.DOM.H3(null, "Loading " + this.label() + " ..."));
 //MochiKit.Logging.logDebug("### runDirectLogin - 4");
 //console.log(this.formData()['attributes']);
                                 formElement = MochiKit.DOM.FORM(MochiKit.Base.update({id:'directLoginForm'}, {'method':this.formData()['attributes']['method'],
-                                                                                                                                                                                        'action':this.formData()['attributes']['action']}));
+                                                                                                                                                                                        'action': this.action()}));
 //MochiKit.Logging.logDebug("### runDirectLogin - 5");
                         formSubmitFunction = MochiKit.Base.method(formElement, 'submit');
 //MochiKit.Logging.logDebug("### runDirectLogin - 6");
 
                         MochiKit.DOM.appendChildNodes(MochiKit.DOM.currentDocument().body,
                                 MochiKit.DOM.DIV({style:'display:none; visibility:hidden;'}, formElement)
                         );
 //MochiKit.Logging.logDebug("### runDirectLogin - 7");
                                 MochiKit.DOM.appendChildNodes(formElement, MochiKit.Base.map(MochiKit.Base.methodcaller("formConfiguration"),
                                                                                                                                                         this.directLoginInputs()));
 //MochiKit.Logging.logDebug("### runDirectLogin - 8");
 
                         submitButtons = MochiKit.Base.filter(function(anInputElement) {
 //MochiKit.Logging.logDebug("### runDirectLogin - 8.1 - " + anInputElement);
 //MochiKit.Logging.logDebug("### runDirectLogin - 8.2 - " + anInputElement.tagName);
 //MochiKit.Logging.logDebug("### runDirectLogin - 8.3 - " + anInputElement.getAttribute('type'));
                                 return ((anInputElement.tagName.toLowerCase() == 'input') && (anInputElement.getAttribute('type').toLowerCase() == 'submit'));
                         }, formElement.elements)
 //MochiKit.Logging.logDebug("### runDirectLogin - 9");
 
                         if (submitButtons.length == 0) {
 //MochiKit.Logging.logDebug("### OLD submit")
                                 if (Clipperz_IEisBroken == true) {
 //MochiKit.Logging.logDebug("### runDirectLogin - 10");
                                         formElement.submit();
                                 } else {
 //MochiKit.Logging.logDebug("### runDirectLogin - 11");
                                         formSubmitFunction();
                                 }
                         } else {
 //MochiKit.Logging.logDebug("### NEW submit")
                                 submitButtons[0].click();
                         }
 
                 }, this));
         },
         
         //-------------------------------------------------------------------------
 
         'runDirectLogin': function(aNewWindow) {
                         varnewWindow;
 
 //console.log("formData.attributes", this.formData()['attributes']);
         //      if (/^javascript/.test(this.formData()['attributes']['action'])) {
-                if ((/^(https?|webdav|ftp)\:/.test(this.formData()['attributes']['action']) == false) &&
-                        (this.formData()['attributes']['type'] != 'http_auth'))
-                {
+                if ((/^(https?|webdav|ftp)\:/.test(this.action()) == false) &&
+                        (this.formData()['attributes']['type'] != 'http_auth')
+                ) {
                         var messageBoxConfiguration;
 
                         if (typeof(aNewWindow) != 'undefined') {
                                 aNewWindow.close();
                         }
 
                         messageBoxConfiguration = {};
                         messageBoxConfiguration.title = Clipperz.PM.Strings['VulnerabilityWarning_Panel_title'];
                         messageBoxConfiguration.msg = Clipperz.PM.Strings['VulnerabilityWarning_Panel_message'];
                         messageBoxConfiguration.animEl = YAHOO.ext.Element.get("mainDiv");
                         messageBoxConfiguration.progress = false;
                         messageBoxConfiguration.closable = false;
                         messageBoxConfiguration.buttons = {'cancel': Clipperz.PM.Strings['VulnerabilityWarning_Panel_buttonLabel']};
 
                         Clipperz.YUI.MessageBox.show(messageBoxConfiguration);
 
                         throw Clipperz.Base.exception.VulnerabilityIssue;
                 }
 
 //MochiKit.Logging.logDebug("### runDirectLogin - 1 : " + Clipperz.Base.serializeJSON(this.serializedData()));
                 if (typeof(aNewWindow) == 'undefined') {
                         newWindow = window.open(Clipperz.PM.Strings['directLoginJumpPageUrl'], "");
                 } else {
                         newWindow = aNewWindow;
                 }
 //MochiKit.Logging.logDebug("### runDirectLogin - 2");
 
                 if (this.formData()['attributes']['type'] == 'http_auth') {
                         this.runHttpAuthDirectLogin(newWindow);
                 } else {
                         this.runSubmitFormDirectLogin(newWindow)
                 }
diff --git a/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js b/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js
index 236d7c9..ba302da 100644
--- a/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js
+++ b/frontend/beta/js/Clipperz/PM/DataModel/DirectLoginReference.js
@@ -18,65 +18,65 @@ refer to http://www.clipperz.com.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
 if (typeof(Clipperz) == 'undefined') { Clipperz = {}; }
 if (typeof(Clipperz.PM) == 'undefined') { Clipperz.PM = {}; }
 if (typeof(Clipperz.PM.DataModel) == 'undefined') { Clipperz.PM.DataModel = {}; }
 
 
 //#############################################################################
 
 Clipperz.PM.DataModel.DirectLoginReference = function(args) {
         args = args || {};
 
 //MochiKit.Logging.logDebug(">>> new DirectLoginReference: " + Clipperz.Base.serializeJSON(MochiKit.Base.keys(args)));
 //MochiKit.Logging.logDebug(">>> new DirectLoginReference - record: " + args.record);
         this._user = args.user;
         
         if (args.directLogin != null) {
                 this._reference = args.directLogin.reference();
                 this._recordReference = args.directLogin.record().reference();
                 this._label = args.directLogin.label();
                 this._favicon = args.directLogin.favicon() || null;
 
                 this._directLogin = args.directLogin;
                 this._record = args.directLogin.record();
         } else {
                 this._reference = args.reference;
                 this._recordReference = args.record;
                 this._label = args.label;
-                this._favicon = args.favicon || null;
+                this._favicon = Clipperz.Base.sanitizeFavicon(args.favicon) || null;
         
                 this._directLogin = null;
                 this._record = null;
         }
 
         this._fixedFavicon = null;
         
         return this;
 }
 
 Clipperz.PM.DataModel.DirectLoginReference.prototype = MochiKit.Base.update(null, {
 
         'user': function() {
                 return this._user;
         },
         
         //-------------------------------------------------------------------------
 
         'reference': function() {
                 return this._reference;
         },
 
         //-------------------------------------------------------------------------
 
         'synchronizeValues': function(aDirectLogin) {
                 this._label = aDirectLogin.label();
                 this._favicon = aDirectLogin.favicon();
         },
 
         //-------------------------------------------------------------------------
 
         'label': function() {
diff --git a/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js b/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
index 1a5caff..b0b9b63 100644
--- a/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
+++ b/frontend/beta/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
@@ -8,64 +8,65 @@ refer to http://www.clipperz.com.
 
 * Clipperz is free software: you can redistribute it and/or modify it
   under the terms of the GNU Affero General Public License as published
   by the Free Software Foundation, either version 3 of the License, or 
   (at your option) any later version.
 
 * Clipperz is distributed in the hope that it will be useful, but 
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
 try { if (typeof(Clipperz.PM.Proxy.Offline) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.PM.Proxy.Offline.DataStore depends on Clipperz.PM.Proxy.Offline!";
 }  
 
 //=============================================================================
 
 Clipperz.PM.Proxy.Offline.DataStore = function(args) {
         args = args || {};
         
         this._data = args.data || (typeof(_clipperz_dump_data_) != 'undefined' ? _clipperz_dump_data_ : null);
         this._isReadOnly = (typeof(args.readOnly) == 'undefined' ? true : args.readOnly);
         this._shouldPayTolls = args.shouldPayTolls || false;
 
         this._tolls = {};
         this._connections = {};
 
+        this._C = null;
         this._b = null;
         this._B = null;
         this._A = null;
         this._userData = null;
 
         return this;
 }
 
 //Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.DataStore, Object, {
 Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
 
         //-------------------------------------------------------------------------
 
         'isReadOnly': function () {
                 return this._isReadOnly;
         },
         
         //-------------------------------------------------------------------------
 
         'shouldPayTolls': function() {
                 return this._shouldPayTolls;
         },
 
         //-------------------------------------------------------------------------
 
         'data': function () {
                 return this._data;
         },
 
         //-------------------------------------------------------------------------
 
         'tolls': function () {
@@ -115,64 +116,74 @@ Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
                                 varnewConnection;
                                 varrecordConfiguration;
 
                         deferredResult.addCallback(MochiKit.Base.method(this, 'userSerializedEncryptedData', someData['users'][i]));
                         deferredResult.addCallback(MochiKit.Base.bind(function(aUserSerializationContext) {
 //console.log("SERIALIZED USER", aUserSerializationContext);
                                 resultData['users'][aUserSerializationContext['credentials']['C']] = {
                                                 's':    aUserSerializationContext['credentials']['s'],
                                                 'v':    aUserSerializationContext['credentials']['v'],
                                                 'version':                      aUserSerializationContext['data']['connectionVersion'],
                                                 'userDetails':          aUserSerializationContext['encryptedData']['user']['header'],
                                                 'userDetailsVersion':aUserSerializationContext['encryptedData']['user']['version'],
                                                 'statistics':           aUserSerializationContext['encryptedData']['user']['statistics'],
                                                 'lock':                                 aUserSerializationContext['encryptedData']['user']['lock'],
                                                 'records':                      this.rearrangeRecordsData(aUserSerializationContext['encryptedData']['records'])
                                 }
                         }, this));
                 }
                 
                 deferredResult.addCallback(MochiKit.Base.bind(function() {
 //console.log("this._data", resultData);
                         this._data = resultData;
                 }, this));
                 
                 deferredResult.callback();
 //Clipperz.log("<<< Proxy.Test.setupWithData");
 
                 return deferredResult;
         },
 
         //=========================================================================
 
+        'C': function() {
+                return this._C;
+        },
+
+        'set_C': function(aValue) {
+                this._C = aValue;
+        },
+
+        //-------------------------------------------------------------------------
+
         'b': function() {
                 return this._b;
         },
 
         'set_b': function(aValue) {
                 this._b = aValue;
         },
 
         //-------------------------------------------------------------------------
 
         'B': function() {
                 return this._B;
         },
 
         'set_B': function(aValue) {
                 this._B = aValue;
         },
 
         //-------------------------------------------------------------------------
 
         'A': function() {
                 return this._A;
         },
 
         'set_A': function(aValue) {
                 this._A = aValue;
         },
 
         //-------------------------------------------------------------------------
 
         'userData': function() {
                 return this._userData;
@@ -207,66 +218,66 @@ Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
                                 targetValue: targetValue,
                                 cost: cost
                 }
 
                 if (this.shouldPayTolls()) {
                         this.tolls()[targetValue] = result;
                 }
 
                 return result;
         },
 
         //-------------------------------------------------------------------------
 
         'checkToll': function (aFunctionName, someParameters) {
                 if (this.shouldPayTolls()) {
                         var localToll;
                                 vartollParameters;
                         
                         tollParameters = someParameters['toll'];
                         localToll = this.tolls()[tollParameters['targetValue']];
                         
                         if (localToll != null) {
                                 if (! Clipperz.PM.Toll.validate(tollParameters['targetValue'], tollParameters['toll'], localToll['cost'])) {
                                         throw "Toll value too low.";
                                 };
                         } else {
                                 throw "Missing toll";
                         }
                 }
         },
 
         //=========================================================================
-        
-        'processMessage': function(aFunctionName, someParameters) {
+
+        'processMessage': function (aFunctionName, someParameters) {
                 var result;
 
                 switch(aFunctionName) {
                         case 'knock':
                                 result = this._knock(someParameters);
                                 break;
                         case 'registration':
                                 this.checkToll(aFunctionName, someParameters);
                                 result = this._registration(someParameters.parameters);
                                 break;
                         case 'handshake':
                                 this.checkToll(aFunctionName, someParameters);
                                 result = this._handshake(someParameters.parameters);
                                 break;
                         case 'message':
                                 this.checkToll(aFunctionName, someParameters);
                                 result = this._message(someParameters.parameters);
                                 break;
                         case 'logout':
                                 result = this._logout(someParameters.parameters);
                                 break;
                 }
 
                 return result;
         },
 
         //=========================================================================
 
         '_knock': function(someParameters) {
                 var result;
                 
                 result = {
@@ -274,127 +285,143 @@ Clipperz.PM.Proxy.Offline.DataStore.prototype = MochiKit.Base.update(null, {
         //              toll: {
         //                      requestType: someParameters['requestType'],
         //                      targetValue: "3a1ba0be23580f902885c6c8a6b035e228ed1ca74d77de5f9bb0e0c899f07cfe",
         //                      cost: 
         //              }
                 }
                 
                 return result;
         },
 
         //-------------------------------------------------------------------------
 
         '_registration': function(someParameters) {
 //console.log("_registration", someParameters);
                 if (this.isReadOnly() == false) {
                         if (typeof(this.data()['users'][someParameters['credentials']['C']]) == 'undefined') {
                                 this.data()['users'][someParameters['credentials']['C']] = {
                                                 's':    someParameters['credentials']['s'],
                                                 'v':    someParameters['credentials']['v'],
                                                 'version':someParameters['credentials']['version'],
                 //                              'lock':         someParameters['user']['lock'],
                                                 'lock':         Clipperz.Crypto.Base.generateRandomSeed(),
                 //                              'maxNumberOfRecords':'100',
                                                 'userDetails':          someParameters['user']['header'],
                                                 'statistics':           someParameters['user']['statistics'],
                                                 'userDetailsVersion':someParameters['user']['version'],
                                                 'records':{}
                                 }
                         } else {
                                 throw "user already exists";
                         }
                 } else {
-                        throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
+                throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
                 }
 
                 result = {
                         result: {
                                         'lock':         this.data()['users'][someParameters['credentials']['C']]['lock'],
                                         'result':'done'
-                        },
+        },
                         toll:   this.getTollForRequestType('CONNECT')
                 }
 
                 return MochiKit.Async.succeed(result);
         },
 
         //-------------------------------------------------------------------------
 
         '_handshake': function(someParameters) {
                 var result;
                         varnextTollRequestType;
 
 //Clipperz.log(">>> Proxy.Offline.DataStore._handshake");
                 result = {};
                 if (someParameters.message == "connect") {
                         var userData;
                         var randomBytes;
                         var b, B, v;
 
 //console.log(">>> Proxy.Offline.DataStore._handshake.connect", someParameters);
                         userData = this.data()['users'][someParameters.parameters.C];
                         
                         if ((typeof(userData) != 'undefined') && (userData['version'] == someParameters.version)) {
                                 this.setUserData(userData);
                         } else {
                                 this.setUserData(this.data()['users']['catchAllUser']);
                         }
 
                         randomBytes = Clipperz.Crypto.Base.generateRandomSeed();
+                        this.set_C(someParameters.parameters.C);
                         this.set_b(new Clipperz.Crypto.BigInt(randomBytes, 16));
                         v = new Clipperz.Crypto.BigInt(this.userData()['v'], 16);
-                        this.set_B(v.add(Clipperz.Crypto.SRP.g().powerModule(this.b(), Clipperz.Crypto.SRP.n())));
+                        this.set_B((Clipperz.Crypto.SRP.k().multiply(v)).add(Clipperz.Crypto.SRP.g().powerModule(this.b(), Clipperz.Crypto.SRP.n())));
                         
                         this.set_A(someParameters.parameters.A);
                         
                         result['s'] = this.userData()['s'];
                         result['B'] = this.B().asString(16);
                         
                         nextTollRequestType = 'CONNECT';
                 } else if (someParameters.message == "credentialCheck") {
-                        var v, u, S, A, K, M1;
+                        var v, u, s, S, A, K, M1;
+                        var stringHash = function (aValue) {
+                                return Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aValue)).toHexString().substring(2);
+                        };
                         
 //console.log(">>> Proxy.Offline.DataStore._handshake.credentialCheck", someParameters);
                         v = new Clipperz.Crypto.BigInt(this.userData()['v'], 16);
-                        u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(this.B().asString(10))).toHexString(), 16);
                         A = new Clipperz.Crypto.BigInt(this.A(), 16);
+                        u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + this.B().asString(10))).toHexString(), 16);
+                        s = new Clipperz.Crypto.BigInt(this.userData()['s'], 16);
                         S = (A.multiply(v.powerModule(u, Clipperz.Crypto.SRP.n()))).powerModule(this.b(), Clipperz.Crypto.SRP.n());
 
-                        K = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(S.asString(10))).toHexString().slice(2);
+                        K = stringHash(S.asString(10));
 
-                        M1 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + this.B().asString(10) + K)).toHexString().slice(2);
+                        M1 = stringHash(
+                                "597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+                                stringHash(this.C()) +
+                                s.asString(10) +
+                                A.asString(10) +
+                                this.B().asString(10) +
+                                K
+                        );
                         if (someParameters.parameters.M1 == M1) {
                                 var M2;
                                 
-                                M2 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + someParameters.parameters.M1 + K)).toHexString().slice(2);
+                                M2 = stringHash(
+                                        A.asString(10) +
+                                        someParameters.parameters.M1 +
+                                        K
+                                );
                                 result['M2'] = M2;
                         } else {
                                 throw new Error("Client checksum verification failed! Expected <" + M1 + ">, received <" + someParameters.parameters.M1 + ">.", "Error");
                         }
 
                         nextTollRequestType = 'MESSAGE';
                 } else if (someParameters.message == "oneTimePassword") {
                         var otpData;
                         
 //console.log("HANDSHAKE WITH OTP", someParameters.parameters.oneTimePasswordKey);
 //console.log("someParameters", someParameters);
 //console.log("data.OTP", Clipperz.Base.serializeJSON(this.data()['onetimePasswords']));
                         otpData = this.data()['onetimePasswords'][someParameters.parameters.oneTimePasswordKey];
 
                         try {
                                 if (typeof(otpData) != 'undefined') {
                                         if (otpData['status'] == 'ACTIVE') {
                                                 if (otpData['key_checksum'] == someParameters.parameters.oneTimePasswordKeyChecksum) {
                                                         result = {
                                                                         'data':         otpData['data'],
                                                                         'version':otpData['version']
                                                         }
 
                                                         otpData['status'] = 'REQUESTED';
                                                 } else {
                                                         otpData['status'] = 'DISABLED';
                                                         throw "The requested One Time Password has been disabled, due to a wrong keyChecksum";
                                                 }
                                         } else {
                                                 throw "The requested One Time Password was not active";
                                         }
                                 } else {
diff --git a/frontend/delta/js/Clipperz/Crypto/PRNG.js b/frontend/delta/js/Clipperz/Crypto/PRNG.js
index c539f06..80d972f 100644
--- a/frontend/delta/js/Clipperz/Crypto/PRNG.js
+++ b/frontend/delta/js/Clipperz/Crypto/PRNG.js
@@ -1,55 +1,57 @@
 /*
 
 Copyright 2008-2013 Clipperz Srl
 
 This file is part of Clipperz, the online password manager.
 For further information about its features and functionalities please
 refer to http://www.clipperz.com.
 
 * Clipperz is free software: you can redistribute it and/or modify it
   under the terms of the GNU Affero General Public License as published
   by the Free Software Foundation, either version 3 of the License, or 
   (at your option) any later version.
 
 * Clipperz is distributed in the hope that it will be useful, but 
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
+"use strict";
+
 try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!";
 }  
 
 try { if (typeof(Clipperz.Crypto.SHA) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.SHA!";
 }  
 
 try { if (typeof(Clipperz.Crypto.AES) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.AES!";
 }  
 
 if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { Clipperz.Crypto.PRNG = {}; }
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.EntropyAccumulator = function(args) {
         args = args || {};
         //MochiKit.Base.bindMethods(this);
 
         this._stack = new Clipperz.ByteArray();
         this._maxStackLengthBeforeHashing = args.maxStackLengthBeforeHashing || 256;
         return this;
 }
 
 Clipperz.Crypto.PRNG.EntropyAccumulator.prototype = MochiKit.Base.update(null, {
 
         'toString': function() {
                 return "Clipperz.Crypto.PRNG.EntropyAccumulator";
         },
 
         //-------------------------------------------------------------------------
@@ -168,246 +170,198 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource = function(args) {
 
 Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
         'intervalTime': function() {
                 return this._intervalTime;
         },
         
         //-------------------------------------------------------------------------
 
         'collectEntropy': function() {
                         varnow;
                         varentropyByte;
                 var intervalTime;
                 now = new Date();
                 entropyByte = (now.getTime() & 0xff);
                 
                 intervalTime = this.intervalTime();
                 if (this.boostMode() == true) {
                         intervalTime = intervalTime / 9;
                 }
                 
                 this.updateGeneratorWithValue(entropyByte);
                 setTimeout(this.collectEntropy, intervalTime);
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBits': function() {
                 return 5;
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) {
         args = args || {};
 
         Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
         this._numberOfBitsToCollectAtEachEvent = 4;
         this._randomBitsCollector = 0;
         this._numberOfRandomBitsCollected = 0;
         
         MochiKit.Signal.connect(document, 'onmousemove', this, 'collectEntropy');
 
         return this;
 }
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
         //-------------------------------------------------------------------------
 
         'numberOfBitsToCollectAtEachEvent': function() {
                 return this._numberOfBitsToCollectAtEachEvent;
         },
         
         //-------------------------------------------------------------------------
 
         'randomBitsCollector': function() {
                 return this._randomBitsCollector;
         },
 
         'setRandomBitsCollector': function(aValue) {
                 this._randomBitsCollector = aValue;
         },
 
         'appendRandomBitsToRandomBitsCollector': function(aValue) {
                 var collectedBits;
                 var numberOfRandomBitsCollected;
                 
                 numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
-                collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
-                this.setRandomBitsCollector(collectetBits);
+                collectedBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
+                this.setRandomBitsCollector(collectedBits);
                 numberOfRandomBitsCollected += this.numberOfBitsToCollectAtEachEvent();
                 
                 if (numberOfRandomBitsCollected == 8) {
-                        this.updateGeneratorWithValue(collectetBits);
+                        this.updateGeneratorWithValue(collectedBits);
                         numberOfRandomBitsCollected = 0;
                         this.setRandomBitsCollector(0);
                 }
                 
                 this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBitsCollected': function() {
                 return this._numberOfRandomBitsCollected;
         },
 
         'setNumberOfRandomBitsCollected': function(aValue) {
                 this._numberOfRandomBitsCollected = aValue;
         },
 
         //-------------------------------------------------------------------------
 
         'collectEntropy': function(anEvent) {
                 var mouseLocation;
                 var randomBit;
                 var mask;
                 
                 mask = 0xffffffff >>> (32 - this.numberOfBitsToCollectAtEachEvent());
                 
                 mouseLocation = anEvent.mouse().client;
                 randomBit = ((mouseLocation.x ^ mouseLocation.y) & mask);
                 this.appendRandomBitsToRandomBitsCollector(randomBit)
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBits': function() {
                 return 1;
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
-Clipperz.Crypto.PRNG.KeyboardRandomnessSource = function(args) {
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource = function(args) {
         args = args || {};
-        Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
-        this._randomBitsCollector = 0;
-        this._numberOfRandomBitsCollected = 0;
+        this._intervalTime = args.intervalTime || 1000;
+        this._browserCrypto = args.browserCrypto;
         
-        MochiKit.Signal.connect(document, 'onkeypress', this, 'collectEntropy');
+        Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
+        this.collectEntropy();
         return this;
 }
 
-Clipperz.Crypto.PRNG.KeyboardRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
-        //-------------------------------------------------------------------------
-
-        'randomBitsCollector': function() {
-                return this._randomBitsCollector;
-        },
-
-        'setRandomBitsCollector': function(aValue) {
-                this._randomBitsCollector = aValue;
+        'intervalTime': function() {
+                return this._intervalTime;
         },
-
-        'appendRandomBitToRandomBitsCollector': function(aValue) {
-                var collectedBits;
-                var numberOfRandomBitsCollected;
-                
-                numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
-                collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
-                this.setRandomBitsCollector(collectetBits);
-                numberOfRandomBitsCollected ++;
-                
-                if (numberOfRandomBitsCollected == 8) {
-                        this.updateGeneratorWithValue(collectetBits);
-                        numberOfRandomBitsCollected = 0;
-                        this.setRandomBitsCollector(0);
-                }
-                
-                this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
+        
+        'browserCrypto': function () {
+                return this._browserCrypto;
         },
         
         //-------------------------------------------------------------------------
 
-        'numberOfRandomBitsCollected': function() {
-                return this._numberOfRandomBitsCollected;
-        },
-
-        'setNumberOfRandomBitsCollected': function(aValue) {
-                this._numberOfRandomBitsCollected = aValue;
-        },
+        'collectEntropy': function() {
+                        varbytesToCollect;
 
-        //-------------------------------------------------------------------------
+                if (this.boostMode() == true) {
+                        bytesToCollect = 64;
+                } else {
+                        bytesToCollect = 8;
+                }
 
-        'collectEntropy': function(anEvent) {
-/*
-                var mouseLocation;
-                var randomBit;
-                
-                mouseLocation = anEvent.mouse().client;
-                        
-                randomBit = ((mouseLocation.x ^ mouseLocation.y) & 0x1);
-                this.appendRandomBitToRandomBitsCollector(randomBit);
-*/
-        },
-        
-        //-------------------------------------------------------------------------
+                var randomValuesArray = new Uint8Array(bytesToCollect);
+                this.browserCrypto().getRandomValues(randomValuesArray);
+                for (var i = 0; i < randomValuesArray.length; i++) {
+                        this.updateGeneratorWithValue(randomValuesArray[i]);
+                }
 
-        'numberOfRandomBits': function() {
-                return 1;
+                setTimeout(this.collectEntropy, this.intervalTime());
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Fortuna = function(args) {
                 vari,c;
         
         args = args || {};
 
         this._key = args.seed || null;
         if (this._key == null) {
                 this._counter = 0;
                 this._key = new Clipperz.ByteArray();
         } else {
                 this._counter = 1;
         }
         
         this._aesKey = null;
         
         this._firstPoolReseedLevel = args.firstPoolReseedLevel || 32 || 64;
         this._numberOfEntropyAccumulators = args.numberOfEntropyAccumulators || 32;
         
         this._accumulators = [];
         c = this.numberOfEntropyAccumulators();
         for (i=0; i<c; i++) {
                 this._accumulators.push(new Clipperz.Crypto.PRNG.EntropyAccumulator());
         }
 
         this._randomnessSources = [];
         this._reseedCounter = 0;
         
@@ -606,65 +560,65 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
 
         'deferredEntropyCollection': function(aValue) {
                 var result;
 
 
                 if (this.isReadyToGenerateRandomValues()) {
                         result = aValue;
                 } else {
                         var deferredResult;
 
                         deferredResult = new Clipperz.Async.Deferred("PRNG.deferredEntropyCollection");
                         deferredResult.addCallback(MochiKit.Base.partial(MochiKit.Async.succeed, aValue));
                         MochiKit.Signal.connect(this,
                                                                         'readyToGenerateRandomBytes',
                                                                         deferredResult,
                                                                         'callback');
                                                                         
                         result = deferredResult;
                 }
 
                 return result;
         },
         
         //-------------------------------------------------------------------------
 
         'fastEntropyAccumulationForTestingPurpose': function() {
                 while (! this.isReadyToGenerateRandomValues()) {
                         this.addRandomByte(Math.floor(Math.random() * 32), Math.floor(Math.random() * 32), Math.floor(Math.random() * 256));
                 }
         },
         
         //-------------------------------------------------------------------------
-
+/*
         'dump': function(appendToDoc) {
                 var tbl;
                 var i,c;
                 
                 tbl = document.createElement("table");
                 tbl.border = 0;
                 with (tbl.style) {
                         border = "1px solid lightgrey";
                         fontFamily = 'Helvetica, Arial, sans-serif';
                         fontSize = '8pt';
                         //borderCollapse = "collapse";
                 }
                 var hdr = tbl.createTHead();
                 var hdrtr = hdr.insertRow(0);
                 // document.createElement("tr");
                 {
                         var ntd;
                         
                         ntd = hdrtr.insertCell(0);
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
                         ntd.appendChild(document.createTextNode("#"));
 
                         ntd = hdrtr.insertCell(1);
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
                         ntd.appendChild(document.createTextNode("s"));
 
                         ntd = hdrtr.insertCell(2);
                         ntd.colSpan = this.firstPoolReseedLevel();
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
@@ -712,130 +666,140 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
                                 }
                                 
                                 if (ii == (this.firstPoolReseedLevel() - 1)) {
                                         bdytd.style.borderRight = "1px solid lightgrey";
                                 }
                                 
                                 bdytd.appendChild(document.createTextNode(cellText));
                         }
                         
                 }
                 
 
                 if (appendToDoc) {
                         var ne = document.createElement("div");
                         ne.id = "entropyGeneratorStatus";
                         with (ne.style) {
                                 fontFamily = "Courier New, monospace";
                                 fontSize = "12px";
                                 lineHeight = "16px";
                                 borderTop = "1px solid black";
                                 padding = "10px";
                         }
                         if (document.getElementById(ne.id)) {
                                 MochiKit.DOM.swapDOM(ne.id, ne);
                         } else {
                                 document.body.appendChild(ne);
                         }
                         ne.appendChild(tbl);
                 }
 
                 return tbl;
         },
-
+*/
         //-----------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Random = function(args) {
         args = args || {};
         //MochiKit.Base.bindMethods(this);
 
         return this;
 }
 
 Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, {
 
         'toString': function() {
                 return "Clipperz.Crypto.PRNG.Random";
         },
 
         //-------------------------------------------------------------------------
 
         'getRandomBytes': function(aSize) {
 //Clipperz.Profile.start("Clipperz.Crypto.PRNG.Random.getRandomBytes");
                         varresult;
                 var i,c;
                 
                 result = new Clipperz.ByteArray()
                 c = aSize || 1;
                 for (i=0; i<c; i++) {
                         result.appendByte((Math.random()*255) & 0xff);
                 }
                 
 //Clipperz.Profile.stop("Clipperz.Crypto.PRNG.Random.getRandomBytes");
                 return result;
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
-_clipperz_crypt_prng_defaultPRNG = null;
+var _clipperz_crypt_prng_defaultPRNG = null;
 
 Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
         if (_clipperz_crypt_prng_defaultPRNG == null) {
                 _clipperz_crypt_prng_defaultPRNG = new Clipperz.Crypto.PRNG.Fortuna();
 
                 //.............................................................
                 //
                         //      TimeRandomnessSource
                 //
                 //.............................................................
                 {
                         var newRandomnessSource;
                 
                         newRandomnessSource = new Clipperz.Crypto.PRNG.TimeRandomnessSource({intervalTime:111});
                         _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
                 }
 
                 //.............................................................
                 //
                         //      MouseRandomnessSource
                 //
                 //.............................................................
                 {
                                 varnewRandomnessSource;
                         
                         newRandomnessSource = new Clipperz.Crypto.PRNG.MouseRandomnessSource();
                         _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
                 }
 
                 //.............................................................
                 //
-                        //      KeyboardRandomnessSource
+                        //      CryptoRandomRandomnessSource
                 //
                 //.............................................................
                 {
                                 varnewRandomnessSource;
+                                varbrowserCrypto;
                         
-                        newRandomnessSource = new Clipperz.Crypto.PRNG.KeyboardRandomnessSource();
-                        _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
+                        if (window.crypto && window.crypto.getRandomValues) {
+                                browserCrypto = window.crypto;
+                        } else if (window.msCrypto && window.msCrypto.getRandomValues) {
+                                browserCrypto = window.msCrypto;
+                        } else {
+                                browserCrypto = null;
+                        }
+        
+                        if (browserCrypto != null) {
+                                newRandomnessSource = new Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource({'browserCrypto':browserCrypto});
+                                _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
+                        }
                 }
-
         }
 
         return _clipperz_crypt_prng_defaultPRNG;
 };
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.exception =  {
         NotEnoughEntropy: new MochiKit.Base.NamedError("Clipperz.Crypto.PRNG.exception.NotEnoughEntropy") 
 };
 
 
 MochiKit.DOM.addLoadEvent(Clipperz.Crypto.PRNG.defaultRandomGenerator);
diff --git a/frontend/delta/js/Clipperz/Crypto/SRP.js b/frontend/delta/js/Clipperz/Crypto/SRP.js
index 597e72d..6898dfb 100644
--- a/frontend/delta/js/Clipperz/Crypto/SRP.js
+++ b/frontend/delta/js/Clipperz/Crypto/SRP.js
@@ -15,84 +15,95 @@ refer to http://www.clipperz.com.
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
 try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!";
 }  
 
 try { if (typeof(Clipperz.Crypto.BigInt) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.SRP depends on Clipperz.Crypto.BigInt!";
 }  
 
 try { if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.SRP depends on Clipperz.Crypto.PRNG!";
 }  
 
 if (typeof(Clipperz.Crypto.SRP) == 'undefined') { Clipperz.Crypto.SRP = {}; }
 
 Clipperz.Crypto.SRP.VERSION = "0.1";
 Clipperz.Crypto.SRP.NAME = "Clipperz.Crypto.SRP";
 
 //#############################################################################
 
 MochiKit.Base.update(Clipperz.Crypto.SRP, {
 
         '_n': null,
         '_g': null,
+        '_k': null,
+        
         //-------------------------------------------------------------------------
 
         'n': function() {
                 if (Clipperz.Crypto.SRP._n == null) {
                          Clipperz.Crypto.SRP._n = new Clipperz.Crypto.BigInt("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3", 16);
                 }
                 
                 return Clipperz.Crypto.SRP._n;
         },
 
         //-------------------------------------------------------------------------
 
         'g': function() {
                 if (Clipperz.Crypto.SRP._g == null) {
                                 Clipperz.Crypto.SRP._g = new Clipperz.Crypto.BigInt(2);         //eventually 5 (as suggested on the Diffi-Helmann documentation)
                 }
                 
                 return Clipperz.Crypto.SRP._g;
         },
 
+        'k': function() {
+                if (Clipperz.Crypto.SRP._k == null) {
+        //              Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt(this.stringHash(this.n().asString() + this.g().asString()), 16);
+                        Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt("64398bff522814e306a97cb9bfc4364b7eed16a8c17c5208a40a2bad2933c8e", 16);
+                }
+                
+                return Clipperz.Crypto.SRP._k;
+        },
+        
         //-----------------------------------------------------------------------------
 
         'exception': {
                 'InvalidValue': new MochiKit.Base.NamedError("Clipperz.Crypto.SRP.exception.InvalidValue") 
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 
 });
 
 //#############################################################################
 //
         //      S R P   C o n n e c t i o n     version 1.0
 //
 //=============================================================================
 Clipperz.Crypto.SRP.Connection = function (args) {
         args = args || {};
 
         this._C = args.C;
         this._P = args.P;
         this.hash = args.hash;
 
         this._a = null;
         this._A = null;
         
         this._s = null;
         this._B = null;
 
         this._x = null;
         
         this._u = null;
@@ -109,167 +120,185 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 
         'toString': function () {
                 return "Clipperz.Crypto.SRP.Connection (username: " + this.username() + "). Status: " + this.statusDescription();
         },
 
         //-------------------------------------------------------------------------
 
         'C': function () {
                 return this._C;
         },
 
         //-------------------------------------------------------------------------
 
         'P': function () {
                 return this._P;
         },
 
         //-------------------------------------------------------------------------
 
         'a': function () {
                 if (this._a == null) {
                         this._a = new Clipperz.Crypto.BigInt(Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32).toHexString().substring(2), 16);
         //              this._a = new Clipperz.Crypto.BigInt("37532428169486597638072888476611365392249575518156687476805936694442691012367", 10);
                 }
                 
                 return this._a;
         },
 
         //-------------------------------------------------------------------------
 
         'A': function () {
                 if (this._A == null) {
-                                //Warning: this value should be strictly greater than zero: how should we perform this check?
+                                //Warning: this value should be strictly greater than zero
                         this._A = Clipperz.Crypto.SRP.g().powerModule(this.a(), Clipperz.Crypto.SRP.n());
-                        
-                        if (this._A.equals(0)) {
+                        if (this._A.equals(0) || negative(this._A)) {
                                 Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
                                 throw Clipperz.Crypto.SRP.exception.InvalidValue;
                         }
                 }
                 
                 return this._A;
         },
 
         //-------------------------------------------------------------------------
 
         's': function () {
                 return this._s;
         },
 
         'set_s': function(aValue) {
                 this._s = aValue;
         },
         
         //-------------------------------------------------------------------------
 
         'B': function () {
                 return this._B;
         },
 
         'set_B': function(aValue) {
-                        //Warning: this value should be strictly greater than zero: how should we perform this check?
-                if (! aValue.equals(0)) {
-                        this._B = aValue;
-                } else {
+                        //Warning: this value should be strictly greater than zero
+                this._B = aValue;
+                if (this._B.equals(0) || negative(this._B)) {
                         Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
                         throw Clipperz.Crypto.SRP.exception.InvalidValue;
                 }
         },
         
         //-------------------------------------------------------------------------
 
         'x': function () {
                 if (this._x == null) {
                         this._x = new Clipperz.Crypto.BigInt(this.stringHash(this.s().asString(16, 64) + this.P()), 16);
                 }
                 
                 return this._x;
         },
 
         //-------------------------------------------------------------------------
 
         'u': function () {
                 if (this._u == null) {
-                        this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.B().asString()), 16);
+                        this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.A().asString() + this.B().asString()), 16);
                 }
                 
                 return this._u;
         },
 
         //-------------------------------------------------------------------------
 
         'S': function () {
                 if (this._S == null) {
                         var bigint;
                                 varsrp;
 
                         bigint = Clipperz.Crypto.BigInt;
                                 srp =  Clipperz.Crypto.SRP;
 
                                 this._S =bigint.powerModule(
-                                                                bigint.subtract(this.B(), bigint.powerModule(srp.g(), this.x(), srp.n())),
-                                                                bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
-                                                                srp.n()
+                                                        bigint.subtract(
+                                                                this.B(),
+                                                                bigint.multiply(
+                                                                        Clipperz.Crypto.SRP.k(),
+                                                                        bigint.powerModule(srp.g(), this.x(), srp.n())
+                                                                )
+                                                        ),
+                                                        bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
+                                                        srp.n()
                                                 )
                 }
                 
                 return this._S;
         },
 
         //-------------------------------------------------------------------------
 
         'K': function () {
                 if (this._K == null) {
                         this._K = this.stringHash(this.S().asString());
                 }
                 
                 return this._K;
         },
 
         //-------------------------------------------------------------------------
 
         'M1': function () {
                 if (this._M1 == null) {
-                        this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+        //              this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+
+                                //http://srp.stanford.edu/design.html
+                                //User -> Host:  M = H(H(N) xor H(g), H(I), s, A, B, K)
+
+                        this._M1 = this.stringHash(
+                                "597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+                                this.stringHash(this.C()) +
+                                this.s().asString() +
+                                this.A().asString() +
+                                this.B().asString() +
+                                this.K()
+                        );
+//console.log("M1", this._M1);
                 }
                 
                 return this._M1;
         },
 
         //-------------------------------------------------------------------------
 
         'M2': function () {
                 if (this._M2 == null) {
                         this._M2 = this.stringHash(this.A().asString(10) + this.M1() + this.K());
+//console.log("M2", this._M2);
                 }
                 
                 return this._M2;
         },
 
         //=========================================================================
 
         'serverSideCredentialsWithSalt': function(aSalt) {
                 var result;
                 var s, x, v;
                 
                 s = aSalt;
                 x = this.stringHash(s + this.P());
                 v = Clipperz.Crypto.SRP.g().powerModule(new Clipperz.Crypto.BigInt(x, 16), Clipperz.Crypto.SRP.n());
 
                 result = {};
                 result['C'] = this.C();
                 result['s'] = s;
                 result['v'] = v.asString(16);
                 
                 return result;
         },
         
         'serverSideCredentials': function() {
                 var result;
                 var s;
                 
                 s = Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32).toHexString().substring(2);
 
                 result = this.serverSideCredentialsWithSalt(s);
                 
                 return result;
diff --git a/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js b/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js
index 3f16f70..d03f873 100644
--- a/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js
+++ b/frontend/delta/js/Clipperz/PM/Proxy/Proxy.Offline.LocalStorageDataStore.js
@@ -59,87 +59,102 @@ Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.LocalStorageDataStore, Clipperz.P
         },
 
         //-------------------------------------------------------------------------
 
         '_registration': function(aConnection, someParameters) {
                 throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
         },
 
         //-------------------------------------------------------------------------
 
         '_handshake': function(aConnection, someParameters) {
                 var result;
                         varnextTollRequestType;
 
                 result = {};
                 if (someParameters.message == "connect") {
                         var userData;
                         var randomBytes;
                         var v;
 
                         userData = this.data()['users'][someParameters.parameters.C];
                         
                         if ((typeof(userData) != 'undefined') && (userData['version'] == someParameters.version)) {
                                 aConnection['userData'] = userData;
                                 aConnection['C'] = someParameters.parameters.C;
                         } else {
                                 aConnection['userData'] = this.data()['users']['catchAllUser'];
                         }
 
                         randomBytes = Clipperz.Crypto.Base.generateRandomSeed();
                         aConnection['b'] = new Clipperz.Crypto.BigInt(randomBytes, 16);
                         v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-                        aConnection['B'] = v.add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
+                        aConnection['B'] = (Clipperz.Crypto.SRP.k().multiply(v)).add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
                         
                         aConnection['A'] = someParameters.parameters.A;
                         
                         result['s'] = aConnection['userData']['s'];
                         result['B'] = aConnection['B'].asString(16);
                         
                         nextTollRequestType = 'CONNECT';
                 } else if (someParameters.message == "credentialCheck") {
-                        var v, u, S, A, K, M1;
+                        var v, u, s, S, A, K, M1;
+                        var stringHash = function (aValue) {
+                                return Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aValue)).toHexString().substring(2);
+                        };
                         
                         v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-                        u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aConnection['B'].asString(10))).toHexString(), 16);
                         A = new Clipperz.Crypto.BigInt(aConnection['A'], 16);
+                        u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10))).toHexString(), 16);
+                        s = new Clipperz.Crypto.BigInt(aConnection['userData']['s'], 16);
                         S = (A.multiply(v.powerModule(u, Clipperz.Crypto.SRP.n()))).powerModule(aConnection['b'], Clipperz.Crypto.SRP.n());
 
-                        K = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(S.asString(10))).toHexString().slice(2);
+                        K = stringHash(S.asString(10));
 
-                        M1 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10) + K)).toHexString().slice(2);
+                        M1 = stringHash(
+                                "597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+                                stringHash(aConnection['C']) +
+                                s.asString(10) +
+                                A.asString(10) +
+                                aConnection['B'].asString(10) +
+                                K
+                        );
                         if (someParameters.parameters.M1 == M1) {
                                 var M2;
                                 
-                                M2 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + someParameters.parameters.M1 + K)).toHexString().slice(2);
+                                M2 = stringHash(
+                                        A.asString(10) +
+                                        someParameters.parameters.M1 +
+                                        K
+                                );
                                 result['M2'] = M2;
                         } else {
                                 throw new Error("Client checksum verification failed! Expected <" + M1 + ">, received <" + someParameters.parameters.M1 + ">.", "Error");
                         }
 
                         nextTollRequestType = 'MESSAGE';
                 } else if (someParameters.message == "oneTimePassword") {
                         var otpData;
                         
                         otpData = this.data()['onetimePasswords'][someParameters.parameters.oneTimePasswordKey];
 
                         try {
                                 if (typeof(otpData) != 'undefined') {
                                         if (otpData['status'] == 'ACTIVE') {
                                                 if (otpData['key_checksum'] == someParameters.parameters.oneTimePasswordKeyChecksum) {
                                                         result = {
                                                                         'data':         otpData['data'],
                                                                         'version':otpData['version']
                                                         }
 
                                                         otpData['status'] = 'REQUESTED';
                                                 } else {
                                                         otpData['status'] = 'DISABLED';
                                                         throw "The requested One Time Password has been disabled, due to a wrong keyChecksum";
                                                 }
                                         } else {
                                                 throw "The requested One Time Password was not active";
                                         }
                                 } else {
                                         throw "The requested One Time Password has not been found"
                                 }
                         } catch (exception) {
diff --git a/frontend/gamma/js/Clipperz/Crypto/PRNG.js b/frontend/gamma/js/Clipperz/Crypto/PRNG.js
index c539f06..80d972f 100644
--- a/frontend/gamma/js/Clipperz/Crypto/PRNG.js
+++ b/frontend/gamma/js/Clipperz/Crypto/PRNG.js
@@ -1,55 +1,57 @@
 /*
 
 Copyright 2008-2013 Clipperz Srl
 
 This file is part of Clipperz, the online password manager.
 For further information about its features and functionalities please
 refer to http://www.clipperz.com.
 
 * Clipperz is free software: you can redistribute it and/or modify it
   under the terms of the GNU Affero General Public License as published
   by the Free Software Foundation, either version 3 of the License, or 
   (at your option) any later version.
 
 * Clipperz is distributed in the hope that it will be useful, but 
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
+"use strict";
+
 try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!";
 }  
 
 try { if (typeof(Clipperz.Crypto.SHA) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.SHA!";
 }  
 
 try { if (typeof(Clipperz.Crypto.AES) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.Crypto.AES!";
 }  
 
 if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { Clipperz.Crypto.PRNG = {}; }
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.EntropyAccumulator = function(args) {
         args = args || {};
         //MochiKit.Base.bindMethods(this);
 
         this._stack = new Clipperz.ByteArray();
         this._maxStackLengthBeforeHashing = args.maxStackLengthBeforeHashing || 256;
         return this;
 }
 
 Clipperz.Crypto.PRNG.EntropyAccumulator.prototype = MochiKit.Base.update(null, {
 
         'toString': function() {
                 return "Clipperz.Crypto.PRNG.EntropyAccumulator";
         },
 
         //-------------------------------------------------------------------------
@@ -168,246 +170,198 @@ Clipperz.Crypto.PRNG.TimeRandomnessSource = function(args) {
 
 Clipperz.Crypto.PRNG.TimeRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
         'intervalTime': function() {
                 return this._intervalTime;
         },
         
         //-------------------------------------------------------------------------
 
         'collectEntropy': function() {
                         varnow;
                         varentropyByte;
                 var intervalTime;
                 now = new Date();
                 entropyByte = (now.getTime() & 0xff);
                 
                 intervalTime = this.intervalTime();
                 if (this.boostMode() == true) {
                         intervalTime = intervalTime / 9;
                 }
                 
                 this.updateGeneratorWithValue(entropyByte);
                 setTimeout(this.collectEntropy, intervalTime);
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBits': function() {
                 return 5;
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource = function(args) {
         args = args || {};
 
         Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
         this._numberOfBitsToCollectAtEachEvent = 4;
         this._randomBitsCollector = 0;
         this._numberOfRandomBitsCollected = 0;
         
         MochiKit.Signal.connect(document, 'onmousemove', this, 'collectEntropy');
 
         return this;
 }
 
 Clipperz.Crypto.PRNG.MouseRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
         //-------------------------------------------------------------------------
 
         'numberOfBitsToCollectAtEachEvent': function() {
                 return this._numberOfBitsToCollectAtEachEvent;
         },
         
         //-------------------------------------------------------------------------
 
         'randomBitsCollector': function() {
                 return this._randomBitsCollector;
         },
 
         'setRandomBitsCollector': function(aValue) {
                 this._randomBitsCollector = aValue;
         },
 
         'appendRandomBitsToRandomBitsCollector': function(aValue) {
                 var collectedBits;
                 var numberOfRandomBitsCollected;
                 
                 numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
-                collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
-                this.setRandomBitsCollector(collectetBits);
+                collectedBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
+                this.setRandomBitsCollector(collectedBits);
                 numberOfRandomBitsCollected += this.numberOfBitsToCollectAtEachEvent();
                 
                 if (numberOfRandomBitsCollected == 8) {
-                        this.updateGeneratorWithValue(collectetBits);
+                        this.updateGeneratorWithValue(collectedBits);
                         numberOfRandomBitsCollected = 0;
                         this.setRandomBitsCollector(0);
                 }
                 
                 this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBitsCollected': function() {
                 return this._numberOfRandomBitsCollected;
         },
 
         'setNumberOfRandomBitsCollected': function(aValue) {
                 this._numberOfRandomBitsCollected = aValue;
         },
 
         //-------------------------------------------------------------------------
 
         'collectEntropy': function(anEvent) {
                 var mouseLocation;
                 var randomBit;
                 var mask;
                 
                 mask = 0xffffffff >>> (32 - this.numberOfBitsToCollectAtEachEvent());
                 
                 mouseLocation = anEvent.mouse().client;
                 randomBit = ((mouseLocation.x ^ mouseLocation.y) & mask);
                 this.appendRandomBitsToRandomBitsCollector(randomBit)
         },
         
         //-------------------------------------------------------------------------
 
         'numberOfRandomBits': function() {
                 return 1;
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //*****************************************************************************
 
-Clipperz.Crypto.PRNG.KeyboardRandomnessSource = function(args) {
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource = function(args) {
         args = args || {};
-        Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
-        this._randomBitsCollector = 0;
-        this._numberOfRandomBitsCollected = 0;
+        this._intervalTime = args.intervalTime || 1000;
+        this._browserCrypto = args.browserCrypto;
         
-        MochiKit.Signal.connect(document, 'onkeypress', this, 'collectEntropy');
+        Clipperz.Crypto.PRNG.RandomnessSource.call(this, args);
 
+        this.collectEntropy();
         return this;
 }
 
-Clipperz.Crypto.PRNG.KeyboardRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
+Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource.prototype = MochiKit.Base.update(new Clipperz.Crypto.PRNG.RandomnessSource, {
 
-        //-------------------------------------------------------------------------
-
-        'randomBitsCollector': function() {
-                return this._randomBitsCollector;
-        },
-
-        'setRandomBitsCollector': function(aValue) {
-                this._randomBitsCollector = aValue;
+        'intervalTime': function() {
+                return this._intervalTime;
         },
-
-        'appendRandomBitToRandomBitsCollector': function(aValue) {
-                var collectedBits;
-                var numberOfRandomBitsCollected;
-                
-                numberOfRandomBitsCollected = this.numberOfRandomBitsCollected();
-                collectetBits = this.randomBitsCollector() | (aValue << numberOfRandomBitsCollected);
-                this.setRandomBitsCollector(collectetBits);
-                numberOfRandomBitsCollected ++;
-                
-                if (numberOfRandomBitsCollected == 8) {
-                        this.updateGeneratorWithValue(collectetBits);
-                        numberOfRandomBitsCollected = 0;
-                        this.setRandomBitsCollector(0);
-                }
-                
-                this.setNumberOfRandomBitsCollected(numberOfRandomBitsCollected)
+        
+        'browserCrypto': function () {
+                return this._browserCrypto;
         },
         
         //-------------------------------------------------------------------------
 
-        'numberOfRandomBitsCollected': function() {
-                return this._numberOfRandomBitsCollected;
-        },
-
-        'setNumberOfRandomBitsCollected': function(aValue) {
-                this._numberOfRandomBitsCollected = aValue;
-        },
+        'collectEntropy': function() {
+                        varbytesToCollect;
 
-        //-------------------------------------------------------------------------
+                if (this.boostMode() == true) {
+                        bytesToCollect = 64;
+                } else {
+                        bytesToCollect = 8;
+                }
 
-        'collectEntropy': function(anEvent) {
-/*
-                var mouseLocation;
-                var randomBit;
-                
-                mouseLocation = anEvent.mouse().client;
-                        
-                randomBit = ((mouseLocation.x ^ mouseLocation.y) & 0x1);
-                this.appendRandomBitToRandomBitsCollector(randomBit);
-*/
-        },
-        
-        //-------------------------------------------------------------------------
+                var randomValuesArray = new Uint8Array(bytesToCollect);
+                this.browserCrypto().getRandomValues(randomValuesArray);
+                for (var i = 0; i < randomValuesArray.length; i++) {
+                        this.updateGeneratorWithValue(randomValuesArray[i]);
+                }
 
-        'numberOfRandomBits': function() {
-                return 1;
+                setTimeout(this.collectEntropy, this.intervalTime());
         },
         
         //-------------------------------------------------------------------------
-
-        'pollingFrequency': function() {
-                return 10;
-        },
-
-        //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Fortuna = function(args) {
                 vari,c;
         
         args = args || {};
 
         this._key = args.seed || null;
         if (this._key == null) {
                 this._counter = 0;
                 this._key = new Clipperz.ByteArray();
         } else {
                 this._counter = 1;
         }
         
         this._aesKey = null;
         
         this._firstPoolReseedLevel = args.firstPoolReseedLevel || 32 || 64;
         this._numberOfEntropyAccumulators = args.numberOfEntropyAccumulators || 32;
         
         this._accumulators = [];
         c = this.numberOfEntropyAccumulators();
         for (i=0; i<c; i++) {
                 this._accumulators.push(new Clipperz.Crypto.PRNG.EntropyAccumulator());
         }
 
         this._randomnessSources = [];
         this._reseedCounter = 0;
         
@@ -606,65 +560,65 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
 
         'deferredEntropyCollection': function(aValue) {
                 var result;
 
 
                 if (this.isReadyToGenerateRandomValues()) {
                         result = aValue;
                 } else {
                         var deferredResult;
 
                         deferredResult = new Clipperz.Async.Deferred("PRNG.deferredEntropyCollection");
                         deferredResult.addCallback(MochiKit.Base.partial(MochiKit.Async.succeed, aValue));
                         MochiKit.Signal.connect(this,
                                                                         'readyToGenerateRandomBytes',
                                                                         deferredResult,
                                                                         'callback');
                                                                         
                         result = deferredResult;
                 }
 
                 return result;
         },
         
         //-------------------------------------------------------------------------
 
         'fastEntropyAccumulationForTestingPurpose': function() {
                 while (! this.isReadyToGenerateRandomValues()) {
                         this.addRandomByte(Math.floor(Math.random() * 32), Math.floor(Math.random() * 32), Math.floor(Math.random() * 256));
                 }
         },
         
         //-------------------------------------------------------------------------
-
+/*
         'dump': function(appendToDoc) {
                 var tbl;
                 var i,c;
                 
                 tbl = document.createElement("table");
                 tbl.border = 0;
                 with (tbl.style) {
                         border = "1px solid lightgrey";
                         fontFamily = 'Helvetica, Arial, sans-serif';
                         fontSize = '8pt';
                         //borderCollapse = "collapse";
                 }
                 var hdr = tbl.createTHead();
                 var hdrtr = hdr.insertRow(0);
                 // document.createElement("tr");
                 {
                         var ntd;
                         
                         ntd = hdrtr.insertCell(0);
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
                         ntd.appendChild(document.createTextNode("#"));
 
                         ntd = hdrtr.insertCell(1);
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
                         ntd.appendChild(document.createTextNode("s"));
 
                         ntd = hdrtr.insertCell(2);
                         ntd.colSpan = this.firstPoolReseedLevel();
                         ntd.style.borderBottom = "1px solid lightgrey";
                         ntd.style.borderRight = "1px solid lightgrey";
@@ -712,130 +666,140 @@ Clipperz.logWarning("Fortuna generator has not enough entropy, yet!");
                                 }
                                 
                                 if (ii == (this.firstPoolReseedLevel() - 1)) {
                                         bdytd.style.borderRight = "1px solid lightgrey";
                                 }
                                 
                                 bdytd.appendChild(document.createTextNode(cellText));
                         }
                         
                 }
                 
 
                 if (appendToDoc) {
                         var ne = document.createElement("div");
                         ne.id = "entropyGeneratorStatus";
                         with (ne.style) {
                                 fontFamily = "Courier New, monospace";
                                 fontSize = "12px";
                                 lineHeight = "16px";
                                 borderTop = "1px solid black";
                                 padding = "10px";
                         }
                         if (document.getElementById(ne.id)) {
                                 MochiKit.DOM.swapDOM(ne.id, ne);
                         } else {
                                 document.body.appendChild(ne);
                         }
                         ne.appendChild(tbl);
                 }
 
                 return tbl;
         },
-
+*/
         //-----------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.Random = function(args) {
         args = args || {};
         //MochiKit.Base.bindMethods(this);
 
         return this;
 }
 
 Clipperz.Crypto.PRNG.Random.prototype = MochiKit.Base.update(null, {
 
         'toString': function() {
                 return "Clipperz.Crypto.PRNG.Random";
         },
 
         //-------------------------------------------------------------------------
 
         'getRandomBytes': function(aSize) {
 //Clipperz.Profile.start("Clipperz.Crypto.PRNG.Random.getRandomBytes");
                         varresult;
                 var i,c;
                 
                 result = new Clipperz.ByteArray()
                 c = aSize || 1;
                 for (i=0; i<c; i++) {
                         result.appendByte((Math.random()*255) & 0xff);
                 }
                 
 //Clipperz.Profile.stop("Clipperz.Crypto.PRNG.Random.getRandomBytes");
                 return result;
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 });
 
 //#############################################################################
 
-_clipperz_crypt_prng_defaultPRNG = null;
+var _clipperz_crypt_prng_defaultPRNG = null;
 
 Clipperz.Crypto.PRNG.defaultRandomGenerator = function() {
         if (_clipperz_crypt_prng_defaultPRNG == null) {
                 _clipperz_crypt_prng_defaultPRNG = new Clipperz.Crypto.PRNG.Fortuna();
 
                 //.............................................................
                 //
                         //      TimeRandomnessSource
                 //
                 //.............................................................
                 {
                         var newRandomnessSource;
                 
                         newRandomnessSource = new Clipperz.Crypto.PRNG.TimeRandomnessSource({intervalTime:111});
                         _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
                 }
 
                 //.............................................................
                 //
                         //      MouseRandomnessSource
                 //
                 //.............................................................
                 {
                                 varnewRandomnessSource;
                         
                         newRandomnessSource = new Clipperz.Crypto.PRNG.MouseRandomnessSource();
                         _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
                 }
 
                 //.............................................................
                 //
-                        //      KeyboardRandomnessSource
+                        //      CryptoRandomRandomnessSource
                 //
                 //.............................................................
                 {
                                 varnewRandomnessSource;
+                                varbrowserCrypto;
                         
-                        newRandomnessSource = new Clipperz.Crypto.PRNG.KeyboardRandomnessSource();
-                        _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
+                        if (window.crypto && window.crypto.getRandomValues) {
+                                browserCrypto = window.crypto;
+                        } else if (window.msCrypto && window.msCrypto.getRandomValues) {
+                                browserCrypto = window.msCrypto;
+                        } else {
+                                browserCrypto = null;
+                        }
+        
+                        if (browserCrypto != null) {
+                                newRandomnessSource = new Clipperz.Crypto.PRNG.CryptoRandomRandomnessSource({'browserCrypto':browserCrypto});
+                                _clipperz_crypt_prng_defaultPRNG.addRandomnessSource(newRandomnessSource);
+                        }
                 }
-
         }
 
         return _clipperz_crypt_prng_defaultPRNG;
 };
 
 //#############################################################################
 
 Clipperz.Crypto.PRNG.exception =  {
         NotEnoughEntropy: new MochiKit.Base.NamedError("Clipperz.Crypto.PRNG.exception.NotEnoughEntropy") 
 };
 
 
 MochiKit.DOM.addLoadEvent(Clipperz.Crypto.PRNG.defaultRandomGenerator);
diff --git a/frontend/gamma/js/Clipperz/Crypto/SRP.js b/frontend/gamma/js/Clipperz/Crypto/SRP.js
index 597e72d..6898dfb 100644
--- a/frontend/gamma/js/Clipperz/Crypto/SRP.js
+++ b/frontend/gamma/js/Clipperz/Crypto/SRP.js
@@ -15,84 +15,95 @@ refer to http://www.clipperz.com.
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
 try { if (typeof(Clipperz.ByteArray) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.PRNG depends on Clipperz.ByteArray!";
 }  
 
 try { if (typeof(Clipperz.Crypto.BigInt) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.SRP depends on Clipperz.Crypto.BigInt!";
 }  
 
 try { if (typeof(Clipperz.Crypto.PRNG) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.Crypto.SRP depends on Clipperz.Crypto.PRNG!";
 }  
 
 if (typeof(Clipperz.Crypto.SRP) == 'undefined') { Clipperz.Crypto.SRP = {}; }
 
 Clipperz.Crypto.SRP.VERSION = "0.1";
 Clipperz.Crypto.SRP.NAME = "Clipperz.Crypto.SRP";
 
 //#############################################################################
 
 MochiKit.Base.update(Clipperz.Crypto.SRP, {
 
         '_n': null,
         '_g': null,
+        '_k': null,
+        
         //-------------------------------------------------------------------------
 
         'n': function() {
                 if (Clipperz.Crypto.SRP._n == null) {
                          Clipperz.Crypto.SRP._n = new Clipperz.Crypto.BigInt("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3", 16);
                 }
                 
                 return Clipperz.Crypto.SRP._n;
         },
 
         //-------------------------------------------------------------------------
 
         'g': function() {
                 if (Clipperz.Crypto.SRP._g == null) {
                                 Clipperz.Crypto.SRP._g = new Clipperz.Crypto.BigInt(2);         //eventually 5 (as suggested on the Diffi-Helmann documentation)
                 }
                 
                 return Clipperz.Crypto.SRP._g;
         },
 
+        'k': function() {
+                if (Clipperz.Crypto.SRP._k == null) {
+        //              Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt(this.stringHash(this.n().asString() + this.g().asString()), 16);
+                        Clipperz.Crypto.SRP._k = new Clipperz.Crypto.BigInt("64398bff522814e306a97cb9bfc4364b7eed16a8c17c5208a40a2bad2933c8e", 16);
+                }
+                
+                return Clipperz.Crypto.SRP._k;
+        },
+        
         //-----------------------------------------------------------------------------
 
         'exception': {
                 'InvalidValue': new MochiKit.Base.NamedError("Clipperz.Crypto.SRP.exception.InvalidValue") 
         },
 
         //-------------------------------------------------------------------------
         __syntaxFix__: "syntax fix"
 
 });
 
 //#############################################################################
 //
         //      S R P   C o n n e c t i o n     version 1.0
 //
 //=============================================================================
 Clipperz.Crypto.SRP.Connection = function (args) {
         args = args || {};
 
         this._C = args.C;
         this._P = args.P;
         this.hash = args.hash;
 
         this._a = null;
         this._A = null;
         
         this._s = null;
         this._B = null;
 
         this._x = null;
         
         this._u = null;
@@ -109,167 +120,185 @@ Clipperz.Crypto.SRP.Connection.prototype = MochiKit.Base.update(null, {
 
         'toString': function () {
                 return "Clipperz.Crypto.SRP.Connection (username: " + this.username() + "). Status: " + this.statusDescription();
         },
 
         //-------------------------------------------------------------------------
 
         'C': function () {
                 return this._C;
         },
 
         //-------------------------------------------------------------------------
 
         'P': function () {
                 return this._P;
         },
 
         //-------------------------------------------------------------------------
 
         'a': function () {
                 if (this._a == null) {
                         this._a = new Clipperz.Crypto.BigInt(Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32).toHexString().substring(2), 16);
         //              this._a = new Clipperz.Crypto.BigInt("37532428169486597638072888476611365392249575518156687476805936694442691012367", 10);
                 }
                 
                 return this._a;
         },
 
         //-------------------------------------------------------------------------
 
         'A': function () {
                 if (this._A == null) {
-                                //Warning: this value should be strictly greater than zero: how should we perform this check?
+                                //Warning: this value should be strictly greater than zero
                         this._A = Clipperz.Crypto.SRP.g().powerModule(this.a(), Clipperz.Crypto.SRP.n());
-                        
-                        if (this._A.equals(0)) {
+                        if (this._A.equals(0) || negative(this._A)) {
                                 Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'A' to 0.");
                                 throw Clipperz.Crypto.SRP.exception.InvalidValue;
                         }
                 }
                 
                 return this._A;
         },
 
         //-------------------------------------------------------------------------
 
         's': function () {
                 return this._s;
         },
 
         'set_s': function(aValue) {
                 this._s = aValue;
         },
         
         //-------------------------------------------------------------------------
 
         'B': function () {
                 return this._B;
         },
 
         'set_B': function(aValue) {
-                        //Warning: this value should be strictly greater than zero: how should we perform this check?
-                if (! aValue.equals(0)) {
-                        this._B = aValue;
-                } else {
+                        //Warning: this value should be strictly greater than zero
+                this._B = aValue;
+                if (this._B.equals(0) || negative(this._B)) {
                         Clipperz.logError("Clipperz.Crypto.SRP.Connection: trying to set 'B' to 0.");
                         throw Clipperz.Crypto.SRP.exception.InvalidValue;
                 }
         },
         
         //-------------------------------------------------------------------------
 
         'x': function () {
                 if (this._x == null) {
                         this._x = new Clipperz.Crypto.BigInt(this.stringHash(this.s().asString(16, 64) + this.P()), 16);
                 }
                 
                 return this._x;
         },
 
         //-------------------------------------------------------------------------
 
         'u': function () {
                 if (this._u == null) {
-                        this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.B().asString()), 16);
+                        this._u = new Clipperz.Crypto.BigInt(this.stringHash(this.A().asString() + this.B().asString()), 16);
                 }
                 
                 return this._u;
         },
 
         //-------------------------------------------------------------------------
 
         'S': function () {
                 if (this._S == null) {
                         var bigint;
                                 varsrp;
 
                         bigint = Clipperz.Crypto.BigInt;
                                 srp =  Clipperz.Crypto.SRP;
 
                                 this._S =bigint.powerModule(
-                                                                bigint.subtract(this.B(), bigint.powerModule(srp.g(), this.x(), srp.n())),
-                                                                bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
-                                                                srp.n()
+                                                        bigint.subtract(
+                                                                this.B(),
+                                                                bigint.multiply(
+                                                                        Clipperz.Crypto.SRP.k(),
+                                                                        bigint.powerModule(srp.g(), this.x(), srp.n())
+                                                                )
+                                                        ),
+                                                        bigint.add(this.a(), bigint.multiply(this.u(), this.x())),
+                                                        srp.n()
                                                 )
                 }
                 
                 return this._S;
         },
 
         //-------------------------------------------------------------------------
 
         'K': function () {
                 if (this._K == null) {
                         this._K = this.stringHash(this.S().asString());
                 }
                 
                 return this._K;
         },
 
         //-------------------------------------------------------------------------
 
         'M1': function () {
                 if (this._M1 == null) {
-                        this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+        //              this._M1 = this.stringHash(this.A().asString(10) + this.B().asString(10) + this.K());
+
+                                //http://srp.stanford.edu/design.html
+                                //User -> Host:  M = H(H(N) xor H(g), H(I), s, A, B, K)
+
+                        this._M1 = this.stringHash(
+                                "597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+                                this.stringHash(this.C()) +
+                                this.s().asString() +
+                                this.A().asString() +
+                                this.B().asString() +
+                                this.K()
+                        );
+//console.log("M1", this._M1);
                 }
                 
                 return this._M1;
         },
 
         //-------------------------------------------------------------------------
 
         'M2': function () {
                 if (this._M2 == null) {
                         this._M2 = this.stringHash(this.A().asString(10) + this.M1() + this.K());
+//console.log("M2", this._M2);
                 }
                 
                 return this._M2;
         },
 
         //=========================================================================
 
         'serverSideCredentialsWithSalt': function(aSalt) {
                 var result;
                 var s, x, v;
                 
                 s = aSalt;
                 x = this.stringHash(s + this.P());
                 v = Clipperz.Crypto.SRP.g().powerModule(new Clipperz.Crypto.BigInt(x, 16), Clipperz.Crypto.SRP.n());
 
                 result = {};
                 result['C'] = this.C();
                 result['s'] = s;
                 result['v'] = v.asString(16);
                 
                 return result;
         },
         
         'serverSideCredentials': function() {
                 var result;
                 var s;
                 
                 s = Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32).toHexString().substring(2);
 
                 result = this.serverSideCredentialsWithSalt(s);
                 
                 return result;
diff --git a/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js b/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
index b806cb7..e5f68a8 100644
--- a/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
+++ b/frontend/gamma/js/Clipperz/PM/Proxy/Proxy.Offline.DataStore.js
@@ -7,65 +7,65 @@ For further information about its features and functionalities please
 refer to http://www.clipperz.com.
 
 * Clipperz is free software: you can redistribute it and/or modify it
   under the terms of the GNU Affero General Public License as published
   by the Free Software Foundation, either version 3 of the License, or 
   (at your option) any later version.
 
 * Clipperz is distributed in the hope that it will be useful, but 
   WITHOUT ANY WARRANTY; without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU Affero General Public License for more details.
 
 * You should have received a copy of the GNU Affero General Public
   License along with Clipperz. If not, see http://www.gnu.org/licenses/.
 
 */
 
 try { if (typeof(Clipperz.PM.Proxy.Offline) == 'undefined') { throw ""; }} catch (e) {
         throw "Clipperz.PM.Proxy.Offline.DataStore depends on Clipperz.PM.Proxy.Offline!";
 }  
 
 //=============================================================================
 
 Clipperz.PM.Proxy.Offline.DataStore = function(args) {
         args = args || {};
         
         this._data = args.data || (typeof(_clipperz_dump_data_) != 'undefined' ? _clipperz_dump_data_ : null);
         this._isReadOnly = (typeof(args.readOnly) == 'undefined' ? true : args.readOnly);
         this._shouldPayTolls = args.shouldPayTolls || false;
 
         this._tolls = {};
         this._currentStaticConnection = null;
-        
+
         return this;
 }
 
 Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.DataStore, Object, {
 
         //-------------------------------------------------------------------------
 
         'isReadOnly': function () {
                 return this._isReadOnly;
         },
         
         //-------------------------------------------------------------------------
 
         'shouldPayTolls': function() {
                 return this._shouldPayTolls;
         },
 
         //-------------------------------------------------------------------------
 
         'data': function () {
                 return this._data;
         },
 
         //-------------------------------------------------------------------------
 
         'tolls': function () {
                 return this._tolls;
         },
 
         //=========================================================================
 
         'resetData': function() {
@@ -262,125 +262,140 @@ Clipperz.Base.extend(Clipperz.PM.Proxy.Offline.DataStore, Object, {
 
         //=========================================================================
 
         '_knock': function(aConnection, someParameters) {
                 var result;
                 
                 result = {
                         toll: this.getTollForRequestType(someParameters['requestType'])
                 }
                 
                 return result;
         },
 
         //-------------------------------------------------------------------------
 
         '_registration': function(aConnection, someParameters) {
                 if (this.isReadOnly() == false) {
                         if (typeof(this.data()['users'][someParameters['credentials']['C']]) == 'undefined') {
                                 this.data()['users'][someParameters['credentials']['C']] = {
                                                 's':    someParameters['credentials']['s'],
                                                 'v':    someParameters['credentials']['v'],
                                                 'version':someParameters['credentials']['version'],
         //                                      'lock':         Clipperz.Crypto.Base.generateRandomSeed(),
                                                 'userDetails':          someParameters['user']['header'],
                                                 'statistics':           someParameters['user']['statistics'],
                                                 'userDetailsVersion':someParameters['user']['version'],
                                                 'records':{}
                                 }
                         } else {
                                 throw "user already exists";
                         }
                 } else {
-                        throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
+                throw Clipperz.PM.Proxy.Offline.DataStore.exception.ReadOnly;
                 }
 
                 result = {
                         result: {
                                         'lock':         this.data()['users'][someParameters['credentials']['C']]['lock'],
                                         'result':'done'
-                        },
+        },
                         toll:   this.getTollForRequestType('CONNECT')
                 }
 
                 return result;
         },
 
         //-------------------------------------------------------------------------
 
         '_handshake': function(aConnection, someParameters) {
                 var result;
                         varnextTollRequestType;
 
                 result = {};
                 if (someParameters.message == "connect") {
                         var userData;
                         var randomBytes;
                         var v;
 
                         userData = this.data()['users'][someParameters.parameters.C];
                         
                         if ((typeof(userData) != 'undefined') && (userData['version'] == someParameters.version)) {
                                 aConnection['userData'] = userData;
                                 aConnection['C'] = someParameters.parameters.C;
                         } else {
                                 aConnection['userData'] = this.data()['users']['catchAllUser'];
                         }
 
                         randomBytes = Clipperz.Crypto.Base.generateRandomSeed();
                         aConnection['b'] = new Clipperz.Crypto.BigInt(randomBytes, 16);
                         v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-                        aConnection['B'] = v.add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
+                        aConnection['B'] = (Clipperz.Crypto.SRP.k().multiply(v)).add(Clipperz.Crypto.SRP.g().powerModule(aConnection['b'], Clipperz.Crypto.SRP.n()));
                         
                         aConnection['A'] = someParameters.parameters.A;
                         
                         result['s'] = aConnection['userData']['s'];
                         result['B'] = aConnection['B'].asString(16);
                         
                         nextTollRequestType = 'CONNECT';
                 } else if (someParameters.message == "credentialCheck") {
-                        var v, u, S, A, K, M1;
-                        
+                        var v, u, s, S, A, K, M1;
+                        var stringHash = function (aValue) {
+                                return Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aValue)).toHexString().substring(2);
+                        };
+
                         v = new Clipperz.Crypto.BigInt(aConnection['userData']['v'], 16);
-                        u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(aConnection['B'].asString(10))).toHexString(), 16);
                         A = new Clipperz.Crypto.BigInt(aConnection['A'], 16);
+                        u = new Clipperz.Crypto.BigInt(Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10))).toHexString(), 16);
+                        s = new Clipperz.Crypto.BigInt(aConnection['userData']['s'], 16);
                         S = (A.multiply(v.powerModule(u, Clipperz.Crypto.SRP.n()))).powerModule(aConnection['b'], Clipperz.Crypto.SRP.n());
 
-                        K = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(S.asString(10))).toHexString().slice(2);
+                        K = stringHash(S.asString(10));
 
-                        M1 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + aConnection['B'].asString(10) + K)).toHexString().slice(2);
+                        M1 = stringHash(
+                                "597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529" +
+                                stringHash(aConnection['C']) +
+                                s.asString(10) +
+                                A.asString(10) +
+                                aConnection['B'].asString(10) +
+                                K
+                        );
                         if (someParameters.parameters.M1 == M1) {
                                 var M2;
                                 
-                                M2 = Clipperz.PM.Crypto.encryptingFunctions.versions[someParameters.version].hash(new Clipperz.ByteArray(A.asString(10) + someParameters.parameters.M1 + K)).toHexString().slice(2);
+                                M2 = stringHash(
+                                        A.asString(10) +
+                                        someParameters.parameters.M1 +
+                                        K
+                                );
                                 result['M2'] = M2;
                         } else {
                                 throw new Error("Client checksum verification failed! Expected <" + M1 + ">, received <" + someParameters.parameters.M1 + ">.", "Error");
                         }
 
                         nextTollRequestType = 'MESSAGE';
                 } else if (someParameters.message == "oneTimePassword") {
                         var otpData;
                         
                         otpData = this.data()['onetimePasswords'][someParameters.parameters.oneTimePasswordKey];
 
                         try {
                                 if (typeof(otpData) != 'undefined') {
                                         if (otpData['status'] == 'ACTIVE') {
                                                 if (otpData['key_checksum'] == someParameters.parameters.oneTimePasswordKeyChecksum) {
                                                         result = {
                                                                         'data':         otpData['data'],
                                                                         'version':otpData['version']
                                                         }
 
                                                         otpData['status'] = 'REQUESTED';
                                                 } else {
                                                         otpData['status'] = 'DISABLED';
                                                         throw "The requested One Time Password has been disabled, due to a wrong keyChecksum";
                                                 }
                                         } else {
                                                 throw "The requested One Time Password was not active";
                                         }
                                 } else {
                                         throw "The requested One Time Password has not been found"
                                 }
                         } catch (exception) {