#include <string.h>
#include <asterisk/md5.h>
Go to the source code of this file.
Defines | |
#define | HIGHFIRST 1 |
#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 += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) |
Functions | |
void | byteReverse (unsigned char *buf, unsigned longs) |
void | MD5Init (struct MD5Context *ctx) |
void | MD5Update (struct MD5Context *ctx, unsigned char const *buf, unsigned len) |
void | MD5Final (unsigned char digest[16], struct MD5Context *ctx) |
void | MD5Transform (uint32 buf[4], uint32 const in[16]) |
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Definition at line 162 of file md5.c. Referenced by MD5Transform(). |
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Definition at line 163 of file md5.c. Referenced by MD5Transform(). |
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Definition at line 164 of file md5.c. Referenced by MD5Transform(). |
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Definition at line 165 of file md5.c. Referenced by MD5Transform(). |
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Definition at line 168 of file md5.c. Referenced by MD5Transform(). |
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Definition at line 36 of file md5.c. References uint32. Referenced by MD5Final(), and MD5Update().
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Definition at line 116 of file md5.c. References MD5Context::bits, MD5Context::buf, byteReverse(), MD5Context::in, MD5Transform(), and uint32.
00117 { 00118 unsigned count; 00119 unsigned char *p; 00120 00121 /* Compute number of bytes mod 64 */ 00122 count = (ctx->bits[0] >> 3) & 0x3F; 00123 00124 /* Set the first char of padding to 0x80. This is safe since there is 00125 always at least one byte free */ 00126 p = ctx->in + count; 00127 *p++ = 0x80; 00128 00129 /* Bytes of padding needed to make 64 bytes */ 00130 count = 64 - 1 - count; 00131 00132 /* Pad out to 56 mod 64 */ 00133 if (count < 8) { 00134 /* Two lots of padding: Pad the first block to 64 bytes */ 00135 memset(p, 0, count); 00136 byteReverse(ctx->in, 16); 00137 MD5Transform(ctx->buf, (uint32 *) ctx->in); 00138 00139 /* Now fill the next block with 56 bytes */ 00140 memset(ctx->in, 0, 56); 00141 } else { 00142 /* Pad block to 56 bytes */ 00143 memset(p, 0, count - 8); 00144 } 00145 byteReverse(ctx->in, 14); 00146 00147 /* Append length in bits and transform */ 00148 ((uint32 *) ctx->in)[14] = ctx->bits[0]; 00149 ((uint32 *) ctx->in)[15] = ctx->bits[1]; 00150 00151 MD5Transform(ctx->buf, (uint32 *) ctx->in); 00152 byteReverse((unsigned char *) ctx->buf, 4); 00153 memcpy(digest, ctx->buf, 16); 00154 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ 00155 } |
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Definition at line 53 of file md5.c. References MD5Context::bits, and MD5Context::buf.
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Definition at line 176 of file md5.c. References b, F1, F2, F3, F4, MD5STEP, and uint32. Referenced by MD5Final(), and MD5Update().
00177 { 00178 register uint32 a, b, c, d; 00179 00180 a = buf[0]; 00181 b = buf[1]; 00182 c = buf[2]; 00183 d = buf[3]; 00184 00185 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); 00186 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); 00187 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); 00188 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); 00189 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); 00190 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); 00191 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); 00192 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); 00193 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); 00194 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); 00195 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); 00196 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); 00197 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); 00198 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); 00199 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); 00200 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); 00201 00202 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); 00203 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); 00204 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); 00205 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); 00206 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); 00207 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); 00208 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); 00209 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); 00210 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); 00211 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); 00212 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); 00213 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); 00214 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); 00215 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); 00216 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); 00217 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); 00218 00219 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); 00220 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); 00221 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); 00222 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); 00223 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); 00224 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); 00225 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); 00226 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); 00227 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); 00228 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); 00229 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); 00230 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); 00231 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); 00232 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); 00233 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); 00234 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); 00235 00236 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); 00237 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); 00238 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); 00239 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); 00240 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); 00241 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); 00242 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); 00243 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); 00244 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); 00245 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); 00246 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); 00247 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); 00248 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); 00249 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); 00250 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); 00251 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); 00252 00253 buf[0] += a; 00254 buf[1] += b; 00255 buf[2] += c; 00256 buf[3] += d; 00257 } |
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Definition at line 68 of file md5.c. References MD5Context::bits, MD5Context::buf, byteReverse(), MD5Context::in, MD5Transform(), and uint32.
00069 { 00070 uint32 t; 00071 00072 /* Update bitcount */ 00073 00074 t = ctx->bits[0]; 00075 if ((ctx->bits[0] = t + ((uint32) len << 3)) < t) 00076 ctx->bits[1]++; /* Carry from low to high */ 00077 ctx->bits[1] += len >> 29; 00078 00079 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ 00080 00081 /* Handle any leading odd-sized chunks */ 00082 00083 if (t) { 00084 unsigned char *p = (unsigned char *) ctx->in + t; 00085 00086 t = 64 - t; 00087 if (len < t) { 00088 memcpy(p, buf, len); 00089 return; 00090 } 00091 memcpy(p, buf, t); 00092 byteReverse(ctx->in, 16); 00093 MD5Transform(ctx->buf, (uint32 *) ctx->in); 00094 buf += t; 00095 len -= t; 00096 } 00097 /* Process data in 64-byte chunks */ 00098 00099 while (len >= 64) { 00100 memcpy(ctx->in, buf, 64); 00101 byteReverse(ctx->in, 16); 00102 MD5Transform(ctx->buf, (uint32 *) ctx->in); 00103 buf += 64; 00104 len -= 64; 00105 } 00106 00107 /* Handle any remaining bytes of data. */ 00108 00109 memcpy(ctx->in, buf, len); 00110 } |