md5.cpp
// md5.cpp - modified by Wei Dai from Colin Plumb's public domain md5.c
// any modifications are placed in the public domain
#include "pch.h"
#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
#include "md5.h"
#include "misc.h"
NAMESPACE_BEGIN(CryptoPP)
NAMESPACE_BEGIN(Weak1)
#if defined(CRYPTOPP_DEBUG) && !defined(CRYPTOPP_DOXYGEN_PROCESSING)
void MD5_TestInstantiations()
{
MD5 x;
}
#endif
void MD5::InitState(HashWordType *state)
{
state[0] = 0x67452301L;
state[1] = 0xefcdab89L;
state[2] = 0x98badcfeL;
state[3] = 0x10325476L;
}
void MD5::Transform (word32 *digest, const word32 *data)
{
CRYPTOPP_ASSERT(digest);
CRYPTOPP_ASSERT(data);
// #define F1(x, y, z) (x & y | ~x & z)
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))
#define MD5STEP(f, w, x, y, z, data, s) \
w = rotlFixed(w + f(x, y, z) + data, s) + x
word32 a, b, c, d;
a=digest[0];
b=digest[1];
c=digest[2];
d=digest[3];
MD5STEP(F1, a, b, c, d, data[0] + 0xd76aa478, 7);
MD5STEP(F1, d, a, b, c, data[1] + 0xe8c7b756, 12);
MD5STEP(F1, c, d, a, b, data[2] + 0x242070db, 17);
MD5STEP(F1, b, c, d, a, data[3] + 0xc1bdceee, 22);
MD5STEP(F1, a, b, c, d, data[4] + 0xf57c0faf, 7);
MD5STEP(F1, d, a, b, c, data[5] + 0x4787c62a, 12);
MD5STEP(F1, c, d, a, b, data[6] + 0xa8304613, 17);
MD5STEP(F1, b, c, d, a, data[7] + 0xfd469501, 22);
MD5STEP(F1, a, b, c, d, data[8] + 0x698098d8, 7);
MD5STEP(F1, d, a, b, c, data[9] + 0x8b44f7af, 12);
MD5STEP(F1, c, d, a, b, data[10] + 0xffff5bb1, 17);
MD5STEP(F1, b, c, d, a, data[11] + 0x895cd7be, 22);
MD5STEP(F1, a, b, c, d, data[12] + 0x6b901122, 7);
MD5STEP(F1, d, a, b, c, data[13] + 0xfd987193, 12);
MD5STEP(F1, c, d, a, b, data[14] + 0xa679438e, 17);
MD5STEP(F1, b, c, d, a, data[15] + 0x49b40821, 22);
MD5STEP(F2, a, b, c, d, data[1] + 0xf61e2562, 5);
MD5STEP(F2, d, a, b, c, data[6] + 0xc040b340, 9);
MD5STEP(F2, c, d, a, b, data[11] + 0x265e5a51, 14);
MD5STEP(F2, b, c, d, a, data[0] + 0xe9b6c7aa, 20);
MD5STEP(F2, a, b, c, d, data[5] + 0xd62f105d, 5);
MD5STEP(F2, d, a, b, c, data[10] + 0x02441453, 9);
MD5STEP(F2, c, d, a, b, data[15] + 0xd8a1e681, 14);
MD5STEP(F2, b, c, d, a, data[4] + 0xe7d3fbc8, 20);
MD5STEP(F2, a, b, c, d, data[9] + 0x21e1cde6, 5);
MD5STEP(F2, d, a, b, c, data[14] + 0xc33707d6, 9);
MD5STEP(F2, c, d, a, b, data[3] + 0xf4d50d87, 14);
MD5STEP(F2, b, c, d, a, data[8] + 0x455a14ed, 20);
MD5STEP(F2, a, b, c, d, data[13] + 0xa9e3e905, 5);
MD5STEP(F2, d, a, b, c, data[2] + 0xfcefa3f8, 9);
MD5STEP(F2, c, d, a, b, data[7] + 0x676f02d9, 14);
MD5STEP(F2, b, c, d, a, data[12] + 0x8d2a4c8a, 20);
MD5STEP(F3, a, b, c, d, data[5] + 0xfffa3942, 4);
MD5STEP(F3, d, a, b, c, data[8] + 0x8771f681, 11);
MD5STEP(F3, c, d, a, b, data[11] + 0x6d9d6122, 16);
MD5STEP(F3, b, c, d, a, data[14] + 0xfde5380c, 23);
MD5STEP(F3, a, b, c, d, data[1] + 0xa4beea44, 4);
MD5STEP(F3, d, a, b, c, data[4] + 0x4bdecfa9, 11);
MD5STEP(F3, c, d, a, b, data[7] + 0xf6bb4b60, 16);
MD5STEP(F3, b, c, d, a, data[10] + 0xbebfbc70, 23);
MD5STEP(F3, a, b, c, d, data[13] + 0x289b7ec6, 4);
MD5STEP(F3, d, a, b, c, data[0] + 0xeaa127fa, 11);
MD5STEP(F3, c, d, a, b, data[3] + 0xd4ef3085, 16);
MD5STEP(F3, b, c, d, a, data[6] + 0x04881d05, 23);
MD5STEP(F3, a, b, c, d, data[9] + 0xd9d4d039, 4);
MD5STEP(F3, d, a, b, c, data[12] + 0xe6db99e5, 11);
MD5STEP(F3, c, d, a, b, data[15] + 0x1fa27cf8, 16);
MD5STEP(F3, b, c, d, a, data[2] + 0xc4ac5665, 23);
MD5STEP(F4, a, b, c, d, data[0] + 0xf4292244, 6);
MD5STEP(F4, d, a, b, c, data[7] + 0x432aff97, 10);
MD5STEP(F4, c, d, a, b, data[14] + 0xab9423a7, 15);
MD5STEP(F4, b, c, d, a, data[5] + 0xfc93a039, 21);
MD5STEP(F4, a, b, c, d, data[12] + 0x655b59c3, 6);
MD5STEP(F4, d, a, b, c, data[3] + 0x8f0ccc92, 10);
MD5STEP(F4, c, d, a, b, data[10] + 0xffeff47d, 15);
MD5STEP(F4, b, c, d, a, data[1] + 0x85845dd1, 21);
MD5STEP(F4, a, b, c, d, data[8] + 0x6fa87e4f, 6);
MD5STEP(F4, d, a, b, c, data[15] + 0xfe2ce6e0, 10);
MD5STEP(F4, c, d, a, b, data[6] + 0xa3014314, 15);
MD5STEP(F4, b, c, d, a, data[13] + 0x4e0811a1, 21);
MD5STEP(F4, a, b, c, d, data[4] + 0xf7537e82, 6);
MD5STEP(F4, d, a, b, c, data[11] + 0xbd3af235, 10);
MD5STEP(F4, c, d, a, b, data[2] + 0x2ad7d2bb, 15);
MD5STEP(F4, b, c, d, a, data[9] + 0xeb86d391, 21);
digest[0]+=a;
digest[1]+=b;
digest[2]+=c;
digest[3]+=d;
}
NAMESPACE_END // Weak
NAMESPACE_END // CryptoPP
word32
unsigned int word32
32-bit unsigned datatype
Definition: config_int.h:62
misc.h
Utility functions for the Crypto++ library.
CryptoPP
Crypto++ library namespace.
pch.h
Precompiled header file.
CRYPTOPP_ASSERT
#define CRYPTOPP_ASSERT(exp)
Debugging and diagnostic assertion.
Definition: trap.h:68