U32 SHIFT_ROUNDS[64] = { 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21 }; U32 CONSTANTS[64] = { 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501, 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be, 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8, 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a, 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70, 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05, 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665, 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1, 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1, 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 }; U32 INITIAL_A = 0x67452301; U32 INITIAL_B = 0xefcdab89; U32 INITIAL_C = 0x98badcfe; U32 INITIAL_D = 0x10325476; I32 leftrotate (U32 x, U32 y) { U32 steps = y % 32; return x << steps | x >> (32 - steps); } U0 md5_process_words (U32 *words, U32 *a, U32 *b, U32 *c, U32 *d) { U32 f, g, i, xa, xb, xc, xd; xa = *a; xb = *b; xc = *c; xd = *d; for (i = 0; i < 64; i++) { if (i < 16) { f = xb & xc | ~xb & xd; g = i; } else if (i < 32) { f = xd & xb | ~xd & xc; g = (i * 5 + 1) % 16; } else if (i < 48) { f = xb ^ xc ^ xd; g = (i * 3 + 5) % 16; } else { f = xc ^ (xb | ~xd); g = i * 7 % 16; } f += xa + CONSTANTS[i] + words[g]; xa = xd; xd = xc; xc = xb; xb += leftrotate(f, SHIFT_ROUNDS[i]); } *a += xa; *b += xb; *c += xc; *d += xd; } U0 md5_process_chunk (U8 *chunk, U32 *a, U32 *b, U32 *c, U32 *d) { U32 *words = chunk; md5_process_words (words, a, b, c, d); } U0 md5_print (U32 part) { "%02x%02x%02x%02x", part.u8[0], part.u8[1], part.u8[2], part.u8[3]; } public U0 md5buf(U8 *bytes, I64 len, U8 **res=NULL) { U8 *msg; I32 i,msg_len; U32 a, b, c, d; msg_len = 56 - len % 64; if (msg_len < 1) msg_len += 64; msg_len += len + 8; msg = CAlloc(msg_len); MemCpy(msg, bytes, len); msg[len] = 0x80; a = len << 3; MemCpy (&msg[msg_len - 8], &a, 4); a = INITIAL_A; b = INITIAL_B; c = INITIAL_C; d = INITIAL_D; for (i = 0; i < msg_len; i += 64) md5_process_chunk(&msg[i], &a, &b, &c, &d); if (!res) { md5_print (a); md5_print (b); md5_print (c); md5_print (d); "\n"; } else { *res = MStrPrint("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", a.u8[0],a.u8[1],a.u8[2],a.u8[3],b.u8[0],b.u8[1],b.u8[2],b.u8[3],c.u8[0],c.u8[1],c.u8[2],c.u8[3],d.u8[0],d.u8[1],d.u8[2],d.u8[3]); } Free(msg); } public U8 *md5(U8 *file, U8 **res=NULL) { I64 size=0; U8 *data=FileRead(file,&size); if (size>0 && data) md5buf(data,size, res); Free(data); return res; }