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通用md5.h代码如下:
1 #ifndef MD5_H 2 #define MD5_H 3 #ifdef __alpha 4 typedef unsigned int uint32; 5 #else 6 typedef unsigned long uint32; 7 #endif 8 struct MD5Context { 9 uint32 buf[4]; 10 uint32 bits[2]; 11 unsigned char in[64]; 12 }; 13 extern void MD5Init(); 14 extern void MD5Update(); 15 extern void MD5Final(); 16 extern void MD5Transform(); 17 typedef struct MD5Context MD5_CTX; 18 #endif 19 #ifdef sgi 20 #define HIGHFIRST 21 #endif 22 #ifdef sun 23 #define HIGHFIRST 24 #endif 25 #ifndef HIGHFIRST 26 #define byteReverse(buf, len) /* Nothing */ 27 #else 28 void byteReverse(buf, longs)unsigned char *buf; unsigned longs; 29 { 30 uint32 t; 31 do { 32 t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |((unsigned) buf[1] << 8 | buf[0]); 33 *(uint32 *) buf = t; 34 buf += 4; 35 } while (--longs); 36 } 37 #endif 38 void MD5Init(ctx)struct MD5Context *ctx; 39 { 40 ctx->buf[0] = 0x67452301; 41 ctx->buf[1] = 0xefcdab89; 42 ctx->buf[2] = 0x98badcfe; 43 ctx->buf[3] = 0x10325476; 44 ctx->bits[0] = 0; 45 ctx->bits[1] = 0; 46 } 47 void MD5Update(ctx, buf, len) struct MD5Context *ctx; unsigned char *buf; unsigned len; 48 { 49 uint32 t; 50 t = ctx->bits[0]; 51 if ((ctx->bits[0] = t + ((uint32) len << 3)) < t) 52 ctx->bits[1]++; 53 ctx->bits[1] += len >> 29; 54 t = (t >> 3) & 0x3f; 55 if (t) { 56 unsigned char *p = (unsigned char *) ctx->in + t; 57 t = 64 - t; 58 if (len < t) { 59 memcpy(p, buf, len); 60 return; 61 } 62 memcpy(p, buf, t); 63 byteReverse(ctx->in, 16); 64 MD5Transform(ctx->buf, (uint32 *) ctx->in); 65 buf += t; 66 len -= t; 67 } 68 while (len >= 64) { 69 memcpy(ctx->in, buf, 64); 70 byteReverse(ctx->in, 16); 71 MD5Transform(ctx->buf, (uint32 *) ctx->in); 72 buf += 64; 73 len -= 64; 74 } 75 memcpy(ctx->in, buf, len); 76 } 77 void MD5Final(digest, ctx) 78 unsigned char digest[16]; struct MD5Context *ctx; 79 { 80 unsigned count; 81 unsigned char *p; 82 count = (ctx->bits[0] >> 3) & 0x3F; 83 p = ctx->in + count; 84 *p++ = 0x80; 85 count = 64 - 1 - count; 86 if (count < 8) { 87 memset(p, 0, count); 88 byteReverse(ctx->in, 16); 89 MD5Transform(ctx->buf, (uint32 *) ctx->in); 90 memset(ctx->in, 0, 56); 91 } else { 92 memset(p, 0, count - 8); 93 } 94 byteReverse(ctx->in, 14); 95 ((uint32 *) ctx->in)[14] = ctx->bits[0]; 96 ((uint32 *) ctx->in)[15] = ctx->bits[1]; 97 MD5Transform(ctx->buf, (uint32 *) ctx->in); 98 byteReverse((unsigned char *) ctx->buf, 4); 99 memcpy(digest, ctx->buf, 16); 100 memset(ctx, 0, sizeof(ctx)); 101 } 102 103 #define F1(x, y, z) (z ^ (x & (y ^ z))) 104 #define F2(x, y, z) F1(z, x, y) 105 #define F3(x, y, z) (x ^ y ^ z) 106 #define F4(x, y, z) (y ^ (x | ~z)) 107 #define MD5STEP(f, w, x, y, z, data, s) ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) 108 void MD5Transform(buf, in) 109 uint32 buf[4]; uint32 in[16]; 110 { 111 register uint32 a, b, c, d; 112 a = buf[0]; 113 b = buf[1]; 114 c = buf[2]; 115 d = buf[3]; 116 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); 117 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); 118 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); 119 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); 120 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); 121 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); 122 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); 123 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); 124 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); 125 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); 126 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); 127 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); 128 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); 129 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); 130 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); 131 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); 132 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); 133 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); 134 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); 135 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); 136 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); 137 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); 138 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); 139 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); 140 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); 141 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); 142 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); 143 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); 144 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); 145 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); 146 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); 147 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); 148 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); 149 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); 150 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); 151 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); 152 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); 153 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); 154 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); 155 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); 156 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); 157 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); 158 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); 159 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); 160 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); 161 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); 162 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); 163 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); 164 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); 165 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); 166 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); 167 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); 168 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); 169 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); 170 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); 171 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); 172 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); 173 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); 174 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); 175 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); 176 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); 177 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); 178 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); 179 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); 180 buf[0] += a; 181 buf[1] += b; 182 buf[2] += c; 183 buf[3] += d; 184 } 185 char* CMd5(const char* s) 186 { 187 struct MD5Context md5c; 188 unsigned char ss[16]; 189 char subStr[3],resStr[33]; 190 int i; 191 MD5Init( &md5c ); 192 MD5Update( &md5c, s, strlen(s) ); 193 MD5Final( ss, &md5c ); 194 strcpy(resStr,""); 195 for( i=0; i<16; i++ ) 196 { 197 sprintf(subStr, "%02x", ss[i] ); 198 itoa(ss[i],subStr,16); 199 if (strlen(subStr)==1) { 200 strcat(resStr,"0"); 201 } 202 strcat(resStr,subStr); 203 } 204 strcat(resStr,"