| -rw-r--r-- | pwmanager/pwmanager/sha1.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/pwmanager/pwmanager/sha1.h b/pwmanager/pwmanager/sha1.h new file mode 100644 index 0000000..29442a7 --- a/dev/null +++ b/pwmanager/pwmanager/sha1.h @@ -0,0 +1,75 @@ +/*************************************************************************** + * * + * copyright (C) 2003 by Michael Buesch * + * email: mbuesch@freenet.de * + * * + * 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 1.0.1 of pwmanager + * and was modified to run on embedded devices that run microkde + * + * $Id$ + **************************************************************************/ + +#ifndef SHA1_H +#define SHA1_H + +#include <stdint.h> +#include <string> +using std::string; + +typedef uint8_t byte; + +#define SHA1_HASH_LEN_BIT 160 +#define SHA1_HASH_LEN_BYTE (SHA1_HASH_LEN_BIT / 8) + +/** sha1 hash algorithm. + * Derived from libgcrypt-1.1.12 + */ +class Sha1 +{ + struct SHA1_CONTEXT + { + uint32_t h0,h1,h2,h3,h4; + uint32_t nblocks; + byte buf[64]; + int count; + }; + +public: + Sha1() { sha1_init(); } + static bool selfTest(); + + void sha1_write(const byte *inbuf, uint32_t inlen); + string sha1_read(); + +protected: + void sha1_init(); + void sha1_final(); + void burn_stack (int bytes); + void transform(const byte *data); + + /** Rotate a 32 bit integer by n bytes */ + uint32_t rol(uint32_t x, int n) + { +#if defined(__GNUC__) && defined(__i386__) + __asm__("roll %%cl,%0" + :"=r" (x) + :"0" (x),"c" (n)); + return x; +#else + return ((x) << (n)) | ((x) >> (32-(n))); +#endif + } + +protected: + struct SHA1_CONTEXT ctx; +}; + +#endif |