comment change

2 files changed, 2 insertions, 2 deletions

diff --git a/pwmanager/pwmanager/libgcryptif.cpp b/pwmanager/pwmanager/libgcryptif.cpp
index 8175510..eafd318 100644
--- a/pwmanager/pwmanager/libgcryptif.cpp
+++ b/pwmanager/pwmanager/libgcryptif.cpp
@@ -1,274 +1,274 @@
 /***************************************************************************
  *                                                                         *
  *   copyright (C) 2004 by Michael Buesch                                  *
  *   email: mbuesch@freenet.de                                             *
  *                                                                         *
  *   hashPassphrase() is derived from GnuPG and is                         *
  *   Copyright (C) 1998, 1999, 2000, 2001, 2003                            *
  *   Free Software Foundation, Inc.                                        *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License version 2        *
  *   as published by the Free Software Foundation.                         *
  *                                                                         *
  ***************************************************************************/
 
 /***************************************************************************
  * copyright (C) 2004 by Ulf Schenk
- * This file is originaly based on version 2.0 of pwmanager
+ * This file is originaly based on version 1.1 of pwmanager
  * and was modified to run on embedded devices that run microkde
  *
  * $Id$
  **************************************************************************/  
 
 #include "libgcryptif.h"
 
 #ifdef CONFIG_PWMANAGER_GCRY
 
 #include "pwmdoc.h"
 #include "randomizer.h"
 
 #include <gcrypt.h>
 
 #ifdef PWM_EMBEDDED
 #include <pwmprefs.h>
 #endif
 
 
 PwMerror LibGCryptIf::encrypt(unsigned char **outBuf,
                               size_t *outBufLen,
                               unsigned char *inBuf,
                               size_t inBufLen,
                               const unsigned char *key,
                               size_t keylen,
                               char _algo)
 {
         PwMerror ret = e_success;
         gcry_error_t err;
         gcry_cipher_hd_t handle;
         size_t blklen;
         size_t unpaddedLen = inBufLen;
         size_t cipherKeylen;
         unsigned char *hashedKey;
         unsigned char salt[STRING2KEY_SALTLEN];
         int algo = mapCipherId(_algo);
 
         if (!inBufLen || !keylen)
                 return e_invalidArg;
 
         // test if algo is ready for encryption
         err = gcry_cipher_algo_info(algo,
                                     GCRYCTL_TEST_ALGO,
                                     0, 0);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doEncrypt(): GCRYCTL_TEST_ALGO failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out;
         }
         // get the algo block length
         err = gcry_cipher_algo_info(algo,
                                     GCRYCTL_GET_BLKLEN,
                                     0,
                                     &blklen);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doEncrypt(): GCRYCTL_GET_BLKLEN failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out;
         }
         /* double check if we have enough space.
          * We have only 1024 extra bytes for padding and salt.
          */
         BUG_ON(blklen > 1024 - STRING2KEY_SALTLEN);
         // get the algo key length
         err = gcry_cipher_algo_info(algo,
                                     GCRYCTL_GET_KEYLEN,
                                     0,
                                     &cipherKeylen);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doEncrypt(): GCRYCTL_GET_KEYLEN failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out;
         }
         // now open the algo and get a handle
         err = gcry_cipher_open(&handle,
                                algo,
                                GCRY_CIPHER_MODE_CBC,
                                0);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doEncrypt(): gcry_cipher_open() failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out;
         }
         // hash the "key" to a fixed size hash matching "cipherKeylen"
         hashedKey = new unsigned char[cipherKeylen];
         hashPassphrase(key, keylen, salt, hashedKey, cipherKeylen, true);
         // so now set the hashed key
         err = gcry_cipher_setkey(handle, hashedKey, cipherKeylen);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doEncrypt(): gcry_cipher_setkey() failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 delete [] hashedKey;
                 goto out_close;
         }
         delete [] hashedKey;
         /* allocate a buffer for the encrypted data.
          * The size of the buffer is the inBuf length, but blklen
          * aligned and plus the length of the salt, that is appended.
          */
         *outBufLen = getBufLen(unpaddedLen, blklen) + STRING2KEY_SALTLEN;
         *outBuf = new unsigned char[*outBufLen];
         padData(inBuf, unpaddedLen, blklen);
         // encrypt the padded data
         err = gcry_cipher_encrypt(handle,
                                   *outBuf,
                                   *outBufLen - STRING2KEY_SALTLEN,
                                   inBuf,
                                   *outBufLen - STRING2KEY_SALTLEN);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doEncrypt(): gcry_cipher_encrypt() failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out_delete;
         }
         // append the salt to the encrypted data
         memcpy(*outBuf + *outBufLen - STRING2KEY_SALTLEN, salt, STRING2KEY_SALTLEN);
         goto out_close;
 out_delete:
         delete [] *outBuf;
 out_close:
         gcry_cipher_close(handle);
 out:
         return ret;
 }
 
 PwMerror LibGCryptIf::decrypt(unsigned char **outBuf,
                               size_t *outBufLen,
                               const unsigned char *inBuf,
                               size_t inBufLen,
                               const unsigned char *key,
                               size_t keylen,
                               char _algo)
 {
         PwMerror ret = e_success;
         gcry_error_t err;
         gcry_cipher_hd_t handle;
         size_t cipherKeylen;
         unsigned char *hashedKey;
         unsigned char salt[STRING2KEY_SALTLEN];
         int algo = mapCipherId(_algo);
 
         if (!inBufLen || !keylen)
                 return e_invalidArg;
 
         // test if algo is ready for encryption
         err = gcry_cipher_algo_info(algo,
                                     GCRYCTL_TEST_ALGO,
                                     0, 0);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doDecrypt(): GCRYCTL_TEST_ALGO failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out;
         }
         // get algo key length
         err = gcry_cipher_algo_info(algo,
                                     GCRYCTL_GET_KEYLEN,
                                     0,
                                     &cipherKeylen);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doDecrypt(): GCRYCTL_GET_KEYLEN failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out;
         }
         // extract the salt of the encrypted data buffer
         memcpy(salt, inBuf + inBufLen - STRING2KEY_SALTLEN, STRING2KEY_SALTLEN);
         // open the algo and get a handle
         err = gcry_cipher_open(&handle,
                                algo,
                                GCRY_CIPHER_MODE_CBC,
                                0);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doDecrypt(): gcry_cipher_open() failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out;
         }
         // hash the "key" to a fixed size hash matching "cipherKeylen"
         hashedKey = new unsigned char[cipherKeylen];
         hashPassphrase(key, keylen, salt, hashedKey, cipherKeylen, false);
         // so now set the hashed key
         err = gcry_cipher_setkey(handle, hashedKey, cipherKeylen);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doDecrypt(): gcry_cipher_setkey() failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 delete [] hashedKey;
                 goto out_close;
         }
         delete [] hashedKey;
         *outBufLen = inBufLen - STRING2KEY_SALTLEN;
         *outBuf = new unsigned char[*outBufLen];
         // decrypt the data
         err = gcry_cipher_decrypt(handle,
                                   *outBuf,
                                   *outBufLen,
                                   inBuf,
                                   *outBufLen);
         if (err != GPG_ERR_NO_ERROR) {
                 printDebug(string("LibGCryptIf::doEncrypt(): gcry_cipher_encrypt() failed: ")
                            + gcry_strerror(err));
                 ret = e_cryptNotImpl;
                 goto out_delete;
         }
         // remove all random padding
         unpadData(*outBuf, outBufLen);
         goto out_close;
 out_delete:
         delete [] *outBuf;
 out_close:
         gcry_cipher_close(handle);
 out:
         return ret;
 }
 
 PwMerror LibGCryptIf::hash(unsigned char **outBuf,
                            size_t *outBufLen,
                            const unsigned char *inBuf,
                            size_t inBufLen,
                            char _algo)
 {
         PwMerror ret = e_success;
         unsigned int hashLen;
         int algo = mapHashId(_algo);
 
         hashLen = gcry_md_get_algo_dlen(algo);
         *outBufLen = hashLen;
         *outBuf = new unsigned char[*outBufLen];
         gcry_md_hash_buffer(algo,
                             *outBuf,
                             inBuf,
                             inBufLen);
         return ret;
 }
 
 unsigned int LibGCryptIf::hashLength(char _algo)
 {
         unsigned int ret;
         int algo = mapHashId(_algo);
         ret = gcry_md_get_algo_dlen(algo);
         return ret;
 }
 
 int LibGCryptIf::mapCipherId(char algo)
 {
         switch (algo) {
         case PWM_CRYPT_AES128:
                 return GCRY_CIPHER_AES;
         case PWM_CRYPT_AES192:
                 return GCRY_CIPHER_AES192;
diff --git a/pwmanager/pwmanager/libgcryptif.h b/pwmanager/pwmanager/libgcryptif.h
index ce76675..dffd55b 100644
--- a/pwmanager/pwmanager/libgcryptif.h
+++ b/pwmanager/pwmanager/libgcryptif.h
@@ -1,166 +1,166 @@
 /***************************************************************************
  *                                                                         *
  *   copyright (C) 2004 by Michael Buesch                                  *
  *   email: mbuesch@freenet.de                                             *
  *                                                                         *
  *   hashPassphrase() is derived from GnuPG and is                         *
  *   Copyright (C) 1998, 1999, 2000, 2001, 2003                            *
  *   Free Software Foundation, Inc.                                        *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License version 2        *
  *   as published by the Free Software Foundation.                         *
  *                                                                         *
  ***************************************************************************/
 
 /***************************************************************************
  * copyright (C) 2004 by Ulf Schenk
- * This file is originaly based on version 2.0 of pwmanager
+ * This file is originaly based on version 1.1 of pwmanager
  * and was modified to run on embedded devices that run microkde
  *
  * $Id$
  **************************************************************************/  
 
 #ifndef __LIBGCRYPTIF_H
 #define __LIBGCRYPTIF_H
 
 #include "pwmexception.h"
 
 //#undef CONFIG_PWMANAGER_GCRY // for debugging only.
 #ifdef CONFIG_PWMANAGER_GCRY
 
 #include <stddef.h>
 #include <sys/types.h>
 #include <stdint.h>
 
         #define STRING2KEY_SALTLEN8
 
 /** interface class for the libgcrypt cipher and hash algorithms
   * NOTE: Always allocate 1024 extra bytes for the inBuf (for padding)
   */
 class LibGCryptIf
 {
 protected:
         struct STRING2KEY
         {
                 int  mode;
                 int hash_algo;
                 uint8_t salt[STRING2KEY_SALTLEN];
                 uint32_t  count;
         };
         struct DEK
         {
                 size_t keylen;
                 uint8_t key[32]; // this is the largest used keylen (256 bit)
         };
 
 public:
         LibGCryptIf() { }
         /** is libgcrypt available? */
         static bool available()
                         { return true; }
         /** encrypt data. _algo is the PWM_CRYPT_* ID
           * of the algorithm.
           */
         PwMerror encrypt(unsigned char **outBuf,
                          size_t *outBufLen,
                          unsigned char *inBuf,
                          size_t inBufLen,
                          const unsigned char *key,
                          size_t keylen,
                          char _algo);
         /** decrypt data. _algo is the PWM_CRYPT_* ID
           * of the algorithm.
           */
         PwMerror decrypt(unsigned char **outBuf,
                          size_t *outBufLen,
                          const unsigned char *inBuf,
                          size_t inBufLen,
                          const unsigned char *key,
                          size_t keylen,
                          char _algo);
         /** hash data. _algo is the PWM_HASH_* ID of the hash */
         PwMerror hash(unsigned char **outBuf,
                       size_t *outBufLen,
                       const unsigned char *inBuf,
                       size_t inBufLen,
                       char _algo);
         /** returns the length of the hash. _algo is the PWM_HASH_*
           * id of the hash. returns 0 on error.
           */
         unsigned int hashLength(char _algo);
 
 protected:
         /** returns the total buffer length */
         size_t getBufLen(size_t inBufLen, size_t boundary)
                 {
                         return ((boundary - (inBufLen % boundary)) + inBufLen);
                 }
         /** pad the data up to the given boundary.
           * "buf" has to be big enough!
           */
         void padData(unsigned char *buf,
                      size_t bufLen,
                      size_t boundary);
         /** unpad the data */
         void unpadData(const unsigned char *buf,
                        size_t *bufLen);
         /** maps the PWM_CRYPT_* ID of an algorithm
           * to the libgcrypt GCRY_CIPHER_* ID
           */
         int mapCipherId(char algo);
         /** maps the PWM_HASH_* ID of an algorithm
           * to the libgcrypt GCRY_MD_* ID
           */
         int mapHashId(char algo);
         /** hash a passphrase to a cipher key */
         bool hashPassphrase(const unsigned char *pw,
                             size_t pwlen,
                             unsigned char *salt,
                             unsigned char *key,
                             size_t keylen,
                             bool create);
         /** hash a passphrase to a cipher key */
         bool doHashPassphrase(DEK *dek,
                               const unsigned char *pw,
                               size_t pwlen,
                               STRING2KEY *s2k,
                               bool create);
 };
 
 
 #else // CONFIG_PWMANAGER_GCRY
 /** libgcrypt is not installed. This is a NOP wrapper. */
 class LibGCryptIf
 {
 public:
         LibGCryptIf() { }
         static bool available()
                         { return false; }
         PwMerror encrypt(unsigned char **,
                          size_t *,
                          unsigned char *,
                          size_t,
                          const unsigned char *,
                          size_t,
                          char)
                         { return e_cryptNotImpl; }
         PwMerror decrypt(unsigned char **,
                          size_t *,
                          const unsigned char *,
                          size_t,
                          const unsigned char *,
                          size_t,
                          char)
                         { return e_cryptNotImpl; }
         PwMerror hash(unsigned char **,
                       size_t *,
                       const unsigned char *,
                       size_t,
                       char)
                         { return e_hashNotImpl; }
         unsigned int hashLength(char)
                         { return 0; }
 };
 #endif // CONFIG_PWMANAGER_GCRY
 #endif // __LIBGCRYPTIF_H