#include <inttypes.h>Go to the source code of this file.
Functions | |
| void | MD5Init (struct MD5Context *context) |
| void | MD5Update (struct MD5Context *context, unsigned char const *buf, unsigned len) |
| void | MD5Final (unsigned char digest[16], struct MD5Context *context) |
| void | MD5Transform (uint32_t buf[4], uint32_t const in[16]) |
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Definition at line 126 of file md5.c. References MD5Context::bits, MD5Context::buf, byteReverse(), MD5Context::in, and MD5Transform(). 00127 {
00128 unsigned count;
00129 unsigned char *p;
00130
00131 /* Compute number of bytes mod 64 */
00132 count = (ctx->bits[0] >> 3) & 0x3F;
00133
00134 /* Set the first char of padding to 0x80. This is safe since there is
00135 always at least one byte free */
00136 p = ctx->in + count;
00137 *p++ = 0x80;
00138
00139 /* Bytes of padding needed to make 64 bytes */
00140 count = 64 - 1 - count;
00141
00142 /* Pad out to 56 mod 64 */
00143 if (count < 8) {
00144 /* Two lots of padding: Pad the first block to 64 bytes */
00145 memset(p, 0, count);
00146 byteReverse(ctx->in, 16);
00147 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
00148
00149 /* Now fill the next block with 56 bytes */
00150 memset(ctx->in, 0, 56);
00151 } else {
00152 /* Pad block to 56 bytes */
00153 memset(p, 0, count - 8);
00154 }
00155 byteReverse(ctx->in, 14);
00156
00157 /* Append length in bits and transform */
00158 ((uint32_t *) ctx->in)[14] = ctx->bits[0];
00159 ((uint32_t *) ctx->in)[15] = ctx->bits[1];
00160
00161 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
00162 byteReverse((unsigned char *) ctx->buf, 4);
00163 memcpy(digest, ctx->buf, 16);
00164 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
00165 }
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Definition at line 63 of file md5.c. 00064 {
00065 ctx->buf[0] = 0x67452301;
00066 ctx->buf[1] = 0xefcdab89;
00067 ctx->buf[2] = 0x98badcfe;
00068 ctx->buf[3] = 0x10325476;
00069
00070 ctx->bits[0] = 0;
00071 ctx->bits[1] = 0;
00072 }
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Definition at line 186 of file md5.c. References F1, F2, F3, F4, and MD5STEP. Referenced by MD5Final(), and MD5Update(). 00187 {
00188 register uint32_t a, b, c, d;
00189
00190 a = buf[0];
00191 b = buf[1];
00192 c = buf[2];
00193 d = buf[3];
00194
00195 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
00196 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
00197 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
00198 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
00199 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
00200 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
00201 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
00202 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
00203 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
00204 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
00205 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
00206 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
00207 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
00208 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
00209 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
00210 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
00211
00212 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
00213 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
00214 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
00215 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
00216 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
00217 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
00218 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
00219 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
00220 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
00221 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
00222 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
00223 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
00224 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
00225 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
00226 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
00227 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
00228
00229 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
00230 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
00231 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
00232 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
00233 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
00234 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
00235 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
00236 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
00237 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
00238 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
00239 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
00240 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
00241 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
00242 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
00243 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
00244 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
00245
00246 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
00247 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
00248 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
00249 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
00250 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
00251 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
00252 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
00253 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
00254 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
00255 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
00256 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
00257 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
00258 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
00259 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
00260 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
00261 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
00262
00263 buf[0] += a;
00264 buf[1] += b;
00265 buf[2] += c;
00266 buf[3] += d;
00267 }
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Definition at line 78 of file md5.c. References MD5Context::bits, MD5Context::buf, byteReverse(), MD5Context::in, and MD5Transform(). 00079 {
00080 uint32_t t;
00081
00082 /* Update bitcount */
00083
00084 t = ctx->bits[0];
00085 if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t)
00086 ctx->bits[1]++; /* Carry from low to high */
00087 ctx->bits[1] += len >> 29;
00088
00089 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
00090
00091 /* Handle any leading odd-sized chunks */
00092
00093 if (t) {
00094 unsigned char *p = (unsigned char *) ctx->in + t;
00095
00096 t = 64 - t;
00097 if (len < t) {
00098 memcpy(p, buf, len);
00099 return;
00100 }
00101 memcpy(p, buf, t);
00102 byteReverse(ctx->in, 16);
00103 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
00104 buf += t;
00105 len -= t;
00106 }
00107 /* Process data in 64-byte chunks */
00108
00109 while (len >= 64) {
00110 memcpy(ctx->in, buf, 64);
00111 byteReverse(ctx->in, 16);
00112 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
00113 buf += 64;
00114 len -= 64;
00115 }
00116
00117 /* Handle any remaining bytes of data. */
00118
00119 memcpy(ctx->in, buf, len);
00120 }
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1.4.2