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Diffstat (limited to 'md5.h')
| -rw-r--r-- | md5.h | 95 |
1 files changed, 95 insertions, 0 deletions
@@ -0,0 +1,95 @@ +///////////////////////////////////////////////////////////////////////// +// MD5.cpp +// Implementation file for MD5 class +// +// This C++ Class implementation of the original RSA Data Security, Inc. +// MD5 Message-Digest Algorithm is copyright (c) 2002, Gary McNickle. +// All rights reserved. This software is a derivative of the "RSA Data +// Security, Inc. MD5 Message-Digest Algorithm" +// +// You may use this software free of any charge, but without any +// warranty or implied warranty, provided that you follow the terms +// of the original RSA copyright, listed below. +// +// Original RSA Data Security, Inc. Copyright notice +///////////////////////////////////////////////////////////////////////// +// +// Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All +// rights reserved. +// +// License to copy and use this software is granted provided that it +// is identified as the "RSA Data Security, Inc. MD5 Message-Digest +// Algorithm" in all material mentioning or referencing this software +// or this function. +// License is also granted to make and use derivative works provided +// that such works are identified as "derived from the RSA Data +// Security, Inc. MD5 Message-Digest Algorithm" in all material +// mentioning or referencing the derived work. +// RSA Data Security, Inc. makes no representations concerning either +// the merchantability of this software or the suitability of this +// software for any particular purpose. It is provided "as is" +// without express or implied warranty of any kind. +// These notices must be retained in any copies of any part of this +// documentation and/or software. +///////////////////////////////////////////////////////////////////////// + +typedef unsigned int uint4; +typedef unsigned short int uint2; +typedef unsigned char uchar; + +char* PrintMD5(uchar md5Digest[16]); +char* MD5String(char* szString); + +class md5 +{ +// Methods +public: + md5() { Init(); } + void Init(); + void Update(uchar* chInput, uint4 nInputLen); + void Finalize(); + uchar* Digest() { return m_Digest; } + +private: + + void Transform(uchar* block); + void Encode(uchar* dest, uint4* src, uint4 nLength); + void Decode(uint4* dest, uchar* src, uint4 nLength); + + + inline uint4 rotate_left(uint4 x, uint4 n) + { return ((x << n) | (x >> (32-n))); } + + inline uint4 F(uint4 x, uint4 y, uint4 z) + { return ((x & y) | (~x & z)); } + + inline uint4 G(uint4 x, uint4 y, uint4 z) + { return ((x & z) | (y & ~z)); } + + inline uint4 H(uint4 x, uint4 y, uint4 z) + { return (x ^ y ^ z); } + + inline uint4 I(uint4 x, uint4 y, uint4 z) + { return (y ^ (x | ~z)); } + + inline void FF(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) + { a += F(b, c, d) + x + ac; a = rotate_left(a, s); a += b; } + + inline void GG(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) + { a += G(b, c, d) + x + ac; a = rotate_left(a, s); a += b; } + + inline void HH(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) + { a += H(b, c, d) + x + ac; a = rotate_left(a, s); a += b; } + + inline void II(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) + { a += I(b, c, d) + x + ac; a = rotate_left(a, s); a += b; } + +// Data +private: + uint4 m_State[4]; + uint4 m_Count[2]; + uchar m_Buffer[64]; + uchar m_Digest[16]; + uchar m_Finalized; + +}; |