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lwip/netif/ppp/md5.c@7:4e2468d7d5cb, 2010-12-15 (annotated)
- Committer:
- segundo
- Date:
- Wed Dec 15 18:01:30 2010 +0000
- Revision:
- 7:4e2468d7d5cb
- Parent:
- 0:ac1725ba162c
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| segundo | 0:ac1725ba162c | 1 | /* |
| segundo | 0:ac1725ba162c | 2 | *********************************************************************** |
| segundo | 0:ac1725ba162c | 3 | ** md5.c -- the source code for MD5 routines ** |
| segundo | 0:ac1725ba162c | 4 | ** RSA Data Security, Inc. MD5 Message-Digest Algorithm ** |
| segundo | 0:ac1725ba162c | 5 | ** Created: 2/17/90 RLR ** |
| segundo | 0:ac1725ba162c | 6 | ** Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr. ** |
| segundo | 0:ac1725ba162c | 7 | *********************************************************************** |
| segundo | 0:ac1725ba162c | 8 | */ |
| segundo | 0:ac1725ba162c | 9 | |
| segundo | 0:ac1725ba162c | 10 | /* |
| segundo | 0:ac1725ba162c | 11 | *********************************************************************** |
| segundo | 0:ac1725ba162c | 12 | ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. ** |
| segundo | 0:ac1725ba162c | 13 | ** ** |
| segundo | 0:ac1725ba162c | 14 | ** License to copy and use this software is granted provided that ** |
| segundo | 0:ac1725ba162c | 15 | ** it is identified as the "RSA Data Security, Inc. MD5 Message- ** |
| segundo | 0:ac1725ba162c | 16 | ** Digest Algorithm" in all material mentioning or referencing this ** |
| segundo | 0:ac1725ba162c | 17 | ** software or this function. ** |
| segundo | 0:ac1725ba162c | 18 | ** ** |
| segundo | 0:ac1725ba162c | 19 | ** License is also granted to make and use derivative works ** |
| segundo | 0:ac1725ba162c | 20 | ** provided that such works are identified as "derived from the RSA ** |
| segundo | 0:ac1725ba162c | 21 | ** Data Security, Inc. MD5 Message-Digest Algorithm" in all ** |
| segundo | 0:ac1725ba162c | 22 | ** material mentioning or referencing the derived work. ** |
| segundo | 0:ac1725ba162c | 23 | ** ** |
| segundo | 0:ac1725ba162c | 24 | ** RSA Data Security, Inc. makes no representations concerning ** |
| segundo | 0:ac1725ba162c | 25 | ** either the merchantability of this software or the suitability ** |
| segundo | 0:ac1725ba162c | 26 | ** of this software for any particular purpose. It is provided "as ** |
| segundo | 0:ac1725ba162c | 27 | ** is" without express or implied warranty of any kind. ** |
| segundo | 0:ac1725ba162c | 28 | ** ** |
| segundo | 0:ac1725ba162c | 29 | ** These notices must be retained in any copies of any part of this ** |
| segundo | 0:ac1725ba162c | 30 | ** documentation and/or software. ** |
| segundo | 0:ac1725ba162c | 31 | *********************************************************************** |
| segundo | 0:ac1725ba162c | 32 | */ |
| segundo | 0:ac1725ba162c | 33 | |
| segundo | 0:ac1725ba162c | 34 | #include "lwip/opt.h" |
| segundo | 0:ac1725ba162c | 35 | |
| segundo | 0:ac1725ba162c | 36 | #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
| segundo | 0:ac1725ba162c | 37 | |
| segundo | 0:ac1725ba162c | 38 | #if CHAP_SUPPORT || MD5_SUPPORT |
| segundo | 0:ac1725ba162c | 39 | |
| segundo | 0:ac1725ba162c | 40 | #include "ppp.h" |
| segundo | 0:ac1725ba162c | 41 | #include "pppdebug.h" |
| segundo | 0:ac1725ba162c | 42 | |
| segundo | 0:ac1725ba162c | 43 | #include "md5.h" |
| segundo | 0:ac1725ba162c | 44 | |
| segundo | 0:ac1725ba162c | 45 | #include <string.h> |
| segundo | 0:ac1725ba162c | 46 | |
| segundo | 0:ac1725ba162c | 47 | /* |
| segundo | 0:ac1725ba162c | 48 | *********************************************************************** |
| segundo | 0:ac1725ba162c | 49 | ** Message-digest routines: ** |
| segundo | 0:ac1725ba162c | 50 | ** To form the message digest for a message M ** |
| segundo | 0:ac1725ba162c | 51 | ** (1) Initialize a context buffer mdContext using MD5Init ** |
| segundo | 0:ac1725ba162c | 52 | ** (2) Call MD5Update on mdContext and M ** |
| segundo | 0:ac1725ba162c | 53 | ** (3) Call MD5Final on mdContext ** |
| segundo | 0:ac1725ba162c | 54 | ** The message digest is now in mdContext->digest[0...15] ** |
| segundo | 0:ac1725ba162c | 55 | *********************************************************************** |
| segundo | 0:ac1725ba162c | 56 | */ |
| segundo | 0:ac1725ba162c | 57 | |
| segundo | 0:ac1725ba162c | 58 | /* forward declaration */ |
| segundo | 0:ac1725ba162c | 59 | static void Transform (u32_t *buf, u32_t *in); |
| segundo | 0:ac1725ba162c | 60 | |
| segundo | 0:ac1725ba162c | 61 | static unsigned char PADDING[64] = { |
| segundo | 0:ac1725ba162c | 62 | 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| segundo | 0:ac1725ba162c | 63 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| segundo | 0:ac1725ba162c | 64 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| segundo | 0:ac1725ba162c | 65 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| segundo | 0:ac1725ba162c | 66 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| segundo | 0:ac1725ba162c | 67 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| segundo | 0:ac1725ba162c | 68 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| segundo | 0:ac1725ba162c | 69 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| segundo | 0:ac1725ba162c | 70 | }; |
| segundo | 0:ac1725ba162c | 71 | |
| segundo | 0:ac1725ba162c | 72 | /* F, G, H and I are basic MD5 functions */ |
| segundo | 0:ac1725ba162c | 73 | #define F(x, y, z) (((x) & (y)) | ((~x) & (z))) |
| segundo | 0:ac1725ba162c | 74 | #define G(x, y, z) (((x) & (z)) | ((y) & (~z))) |
| segundo | 0:ac1725ba162c | 75 | #define H(x, y, z) ((x) ^ (y) ^ (z)) |
| segundo | 0:ac1725ba162c | 76 | #define I(x, y, z) ((y) ^ ((x) | (~z))) |
| segundo | 0:ac1725ba162c | 77 | |
| segundo | 0:ac1725ba162c | 78 | /* ROTATE_LEFT rotates x left n bits */ |
| segundo | 0:ac1725ba162c | 79 | #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) |
| segundo | 0:ac1725ba162c | 80 | |
| segundo | 0:ac1725ba162c | 81 | /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */ |
| segundo | 0:ac1725ba162c | 82 | /* Rotation is separate from addition to prevent recomputation */ |
| segundo | 0:ac1725ba162c | 83 | #define FF(a, b, c, d, x, s, ac) \ |
| segundo | 0:ac1725ba162c | 84 | {(a) += F ((b), (c), (d)) + (x) + (u32_t)(ac); \ |
| segundo | 0:ac1725ba162c | 85 | (a) = ROTATE_LEFT ((a), (s)); \ |
| segundo | 0:ac1725ba162c | 86 | (a) += (b); \ |
| segundo | 0:ac1725ba162c | 87 | } |
| segundo | 0:ac1725ba162c | 88 | #define GG(a, b, c, d, x, s, ac) \ |
| segundo | 0:ac1725ba162c | 89 | {(a) += G ((b), (c), (d)) + (x) + (u32_t)(ac); \ |
| segundo | 0:ac1725ba162c | 90 | (a) = ROTATE_LEFT ((a), (s)); \ |
| segundo | 0:ac1725ba162c | 91 | (a) += (b); \ |
| segundo | 0:ac1725ba162c | 92 | } |
| segundo | 0:ac1725ba162c | 93 | #define HH(a, b, c, d, x, s, ac) \ |
| segundo | 0:ac1725ba162c | 94 | {(a) += H ((b), (c), (d)) + (x) + (u32_t)(ac); \ |
| segundo | 0:ac1725ba162c | 95 | (a) = ROTATE_LEFT ((a), (s)); \ |
| segundo | 0:ac1725ba162c | 96 | (a) += (b); \ |
| segundo | 0:ac1725ba162c | 97 | } |
| segundo | 0:ac1725ba162c | 98 | #define II(a, b, c, d, x, s, ac) \ |
| segundo | 0:ac1725ba162c | 99 | {(a) += I ((b), (c), (d)) + (x) + (u32_t)(ac); \ |
| segundo | 0:ac1725ba162c | 100 | (a) = ROTATE_LEFT ((a), (s)); \ |
| segundo | 0:ac1725ba162c | 101 | (a) += (b); \ |
| segundo | 0:ac1725ba162c | 102 | } |
| segundo | 0:ac1725ba162c | 103 | |
| segundo | 0:ac1725ba162c | 104 | #ifdef __STDC__ |
| segundo | 0:ac1725ba162c | 105 | #define UL(x) x##UL |
| segundo | 0:ac1725ba162c | 106 | #else |
| segundo | 0:ac1725ba162c | 107 | #ifdef WIN32 |
| segundo | 0:ac1725ba162c | 108 | #define UL(x) x##UL |
| segundo | 0:ac1725ba162c | 109 | #else |
| segundo | 0:ac1725ba162c | 110 | #define UL(x) x |
| segundo | 0:ac1725ba162c | 111 | #endif |
| segundo | 0:ac1725ba162c | 112 | #endif |
| segundo | 0:ac1725ba162c | 113 | |
| segundo | 0:ac1725ba162c | 114 | /* The routine MD5Init initializes the message-digest context |
| segundo | 0:ac1725ba162c | 115 | mdContext. All fields are set to zero. |
| segundo | 0:ac1725ba162c | 116 | */ |
| segundo | 0:ac1725ba162c | 117 | void |
| segundo | 0:ac1725ba162c | 118 | MD5Init (MD5_CTX *mdContext) |
| segundo | 0:ac1725ba162c | 119 | { |
| segundo | 0:ac1725ba162c | 120 | mdContext->i[0] = mdContext->i[1] = (u32_t)0; |
| segundo | 0:ac1725ba162c | 121 | |
| segundo | 0:ac1725ba162c | 122 | /* Load magic initialization constants. */ |
| segundo | 0:ac1725ba162c | 123 | mdContext->buf[0] = (u32_t)0x67452301UL; |
| segundo | 0:ac1725ba162c | 124 | mdContext->buf[1] = (u32_t)0xefcdab89UL; |
| segundo | 0:ac1725ba162c | 125 | mdContext->buf[2] = (u32_t)0x98badcfeUL; |
| segundo | 0:ac1725ba162c | 126 | mdContext->buf[3] = (u32_t)0x10325476UL; |
| segundo | 0:ac1725ba162c | 127 | } |
| segundo | 0:ac1725ba162c | 128 | |
| segundo | 0:ac1725ba162c | 129 | /* The routine MD5Update updates the message-digest context to |
| segundo | 0:ac1725ba162c | 130 | account for the presence of each of the characters inBuf[0..inLen-1] |
| segundo | 0:ac1725ba162c | 131 | in the message whose digest is being computed. |
| segundo | 0:ac1725ba162c | 132 | */ |
| segundo | 0:ac1725ba162c | 133 | void |
| segundo | 0:ac1725ba162c | 134 | MD5Update(MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen) |
| segundo | 0:ac1725ba162c | 135 | { |
| segundo | 0:ac1725ba162c | 136 | u32_t in[16]; |
| segundo | 0:ac1725ba162c | 137 | int mdi; |
| segundo | 0:ac1725ba162c | 138 | unsigned int i, ii; |
| segundo | 0:ac1725ba162c | 139 | |
| segundo | 0:ac1725ba162c | 140 | #if 0 |
| segundo | 0:ac1725ba162c | 141 | PPPDEBUG(LOG_INFO, ("MD5Update: %u:%.*H\n", inLen, LWIP_MIN(inLen, 20) * 2, inBuf)); |
| segundo | 0:ac1725ba162c | 142 | PPPDEBUG(LOG_INFO, ("MD5Update: %u:%s\n", inLen, inBuf)); |
| segundo | 0:ac1725ba162c | 143 | #endif |
| segundo | 0:ac1725ba162c | 144 | |
| segundo | 0:ac1725ba162c | 145 | /* compute number of bytes mod 64 */ |
| segundo | 0:ac1725ba162c | 146 | mdi = (int)((mdContext->i[0] >> 3) & 0x3F); |
| segundo | 0:ac1725ba162c | 147 | |
| segundo | 0:ac1725ba162c | 148 | /* update number of bits */ |
| segundo | 0:ac1725ba162c | 149 | if ((mdContext->i[0] + ((u32_t)inLen << 3)) < mdContext->i[0]) { |
| segundo | 0:ac1725ba162c | 150 | mdContext->i[1]++; |
| segundo | 0:ac1725ba162c | 151 | } |
| segundo | 0:ac1725ba162c | 152 | mdContext->i[0] += ((u32_t)inLen << 3); |
| segundo | 0:ac1725ba162c | 153 | mdContext->i[1] += ((u32_t)inLen >> 29); |
| segundo | 0:ac1725ba162c | 154 | |
| segundo | 0:ac1725ba162c | 155 | while (inLen--) { |
| segundo | 0:ac1725ba162c | 156 | /* add new character to buffer, increment mdi */ |
| segundo | 0:ac1725ba162c | 157 | mdContext->in[mdi++] = *inBuf++; |
| segundo | 0:ac1725ba162c | 158 | |
| segundo | 0:ac1725ba162c | 159 | /* transform if necessary */ |
| segundo | 0:ac1725ba162c | 160 | if (mdi == 0x40) { |
| segundo | 0:ac1725ba162c | 161 | for (i = 0, ii = 0; i < 16; i++, ii += 4) { |
| segundo | 0:ac1725ba162c | 162 | in[i] = (((u32_t)mdContext->in[ii+3]) << 24) | |
| segundo | 0:ac1725ba162c | 163 | (((u32_t)mdContext->in[ii+2]) << 16) | |
| segundo | 0:ac1725ba162c | 164 | (((u32_t)mdContext->in[ii+1]) << 8) | |
| segundo | 0:ac1725ba162c | 165 | ((u32_t)mdContext->in[ii]); |
| segundo | 0:ac1725ba162c | 166 | } |
| segundo | 0:ac1725ba162c | 167 | Transform (mdContext->buf, in); |
| segundo | 0:ac1725ba162c | 168 | mdi = 0; |
| segundo | 0:ac1725ba162c | 169 | } |
| segundo | 0:ac1725ba162c | 170 | } |
| segundo | 0:ac1725ba162c | 171 | } |
| segundo | 0:ac1725ba162c | 172 | |
| segundo | 0:ac1725ba162c | 173 | /* The routine MD5Final terminates the message-digest computation and |
| segundo | 0:ac1725ba162c | 174 | ends with the desired message digest in mdContext->digest[0...15]. |
| segundo | 0:ac1725ba162c | 175 | */ |
| segundo | 0:ac1725ba162c | 176 | void |
| segundo | 0:ac1725ba162c | 177 | MD5Final (unsigned char hash[], MD5_CTX *mdContext) |
| segundo | 0:ac1725ba162c | 178 | { |
| segundo | 0:ac1725ba162c | 179 | u32_t in[16]; |
| segundo | 0:ac1725ba162c | 180 | int mdi; |
| segundo | 0:ac1725ba162c | 181 | unsigned int i, ii; |
| segundo | 0:ac1725ba162c | 182 | unsigned int padLen; |
| segundo | 0:ac1725ba162c | 183 | |
| segundo | 0:ac1725ba162c | 184 | /* save number of bits */ |
| segundo | 0:ac1725ba162c | 185 | in[14] = mdContext->i[0]; |
| segundo | 0:ac1725ba162c | 186 | in[15] = mdContext->i[1]; |
| segundo | 0:ac1725ba162c | 187 | |
| segundo | 0:ac1725ba162c | 188 | /* compute number of bytes mod 64 */ |
| segundo | 0:ac1725ba162c | 189 | mdi = (int)((mdContext->i[0] >> 3) & 0x3F); |
| segundo | 0:ac1725ba162c | 190 | |
| segundo | 0:ac1725ba162c | 191 | /* pad out to 56 mod 64 */ |
| segundo | 0:ac1725ba162c | 192 | padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi); |
| segundo | 0:ac1725ba162c | 193 | MD5Update (mdContext, PADDING, padLen); |
| segundo | 0:ac1725ba162c | 194 | |
| segundo | 0:ac1725ba162c | 195 | /* append length in bits and transform */ |
| segundo | 0:ac1725ba162c | 196 | for (i = 0, ii = 0; i < 14; i++, ii += 4) { |
| segundo | 0:ac1725ba162c | 197 | in[i] = (((u32_t)mdContext->in[ii+3]) << 24) | |
| segundo | 0:ac1725ba162c | 198 | (((u32_t)mdContext->in[ii+2]) << 16) | |
| segundo | 0:ac1725ba162c | 199 | (((u32_t)mdContext->in[ii+1]) << 8) | |
| segundo | 0:ac1725ba162c | 200 | ((u32_t)mdContext->in[ii]); |
| segundo | 0:ac1725ba162c | 201 | } |
| segundo | 0:ac1725ba162c | 202 | Transform (mdContext->buf, in); |
| segundo | 0:ac1725ba162c | 203 | |
| segundo | 0:ac1725ba162c | 204 | /* store buffer in digest */ |
| segundo | 0:ac1725ba162c | 205 | for (i = 0, ii = 0; i < 4; i++, ii += 4) { |
| segundo | 0:ac1725ba162c | 206 | mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF); |
| segundo | 0:ac1725ba162c | 207 | mdContext->digest[ii+1] = |
| segundo | 0:ac1725ba162c | 208 | (unsigned char)((mdContext->buf[i] >> 8) & 0xFF); |
| segundo | 0:ac1725ba162c | 209 | mdContext->digest[ii+2] = |
| segundo | 0:ac1725ba162c | 210 | (unsigned char)((mdContext->buf[i] >> 16) & 0xFF); |
| segundo | 0:ac1725ba162c | 211 | mdContext->digest[ii+3] = |
| segundo | 0:ac1725ba162c | 212 | (unsigned char)((mdContext->buf[i] >> 24) & 0xFF); |
| segundo | 0:ac1725ba162c | 213 | } |
| segundo | 0:ac1725ba162c | 214 | SMEMCPY(hash, mdContext->digest, 16); |
| segundo | 0:ac1725ba162c | 215 | } |
| segundo | 0:ac1725ba162c | 216 | |
| segundo | 0:ac1725ba162c | 217 | /* Basic MD5 step. Transforms buf based on in. |
| segundo | 0:ac1725ba162c | 218 | */ |
| segundo | 0:ac1725ba162c | 219 | static void |
| segundo | 0:ac1725ba162c | 220 | Transform (u32_t *buf, u32_t *in) |
| segundo | 0:ac1725ba162c | 221 | { |
| segundo | 0:ac1725ba162c | 222 | u32_t a = buf[0], b = buf[1], c = buf[2], d = buf[3]; |
| segundo | 0:ac1725ba162c | 223 | |
| segundo | 0:ac1725ba162c | 224 | /* Round 1 */ |
| segundo | 0:ac1725ba162c | 225 | #define S11 7 |
| segundo | 0:ac1725ba162c | 226 | #define S12 12 |
| segundo | 0:ac1725ba162c | 227 | #define S13 17 |
| segundo | 0:ac1725ba162c | 228 | #define S14 22 |
| segundo | 0:ac1725ba162c | 229 | FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */ |
| segundo | 0:ac1725ba162c | 230 | FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */ |
| segundo | 0:ac1725ba162c | 231 | FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */ |
| segundo | 0:ac1725ba162c | 232 | FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */ |
| segundo | 0:ac1725ba162c | 233 | FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */ |
| segundo | 0:ac1725ba162c | 234 | FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */ |
| segundo | 0:ac1725ba162c | 235 | FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */ |
| segundo | 0:ac1725ba162c | 236 | FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */ |
| segundo | 0:ac1725ba162c | 237 | FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */ |
| segundo | 0:ac1725ba162c | 238 | FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */ |
| segundo | 0:ac1725ba162c | 239 | FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */ |
| segundo | 0:ac1725ba162c | 240 | FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */ |
| segundo | 0:ac1725ba162c | 241 | FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */ |
| segundo | 0:ac1725ba162c | 242 | FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */ |
| segundo | 0:ac1725ba162c | 243 | FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */ |
| segundo | 0:ac1725ba162c | 244 | FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */ |
| segundo | 0:ac1725ba162c | 245 | |
| segundo | 0:ac1725ba162c | 246 | /* Round 2 */ |
| segundo | 0:ac1725ba162c | 247 | #define S21 5 |
| segundo | 0:ac1725ba162c | 248 | #define S22 9 |
| segundo | 0:ac1725ba162c | 249 | #define S23 14 |
| segundo | 0:ac1725ba162c | 250 | #define S24 20 |
| segundo | 0:ac1725ba162c | 251 | GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */ |
| segundo | 0:ac1725ba162c | 252 | GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */ |
| segundo | 0:ac1725ba162c | 253 | GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */ |
| segundo | 0:ac1725ba162c | 254 | GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */ |
| segundo | 0:ac1725ba162c | 255 | GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */ |
| segundo | 0:ac1725ba162c | 256 | GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */ |
| segundo | 0:ac1725ba162c | 257 | GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */ |
| segundo | 0:ac1725ba162c | 258 | GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */ |
| segundo | 0:ac1725ba162c | 259 | GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */ |
| segundo | 0:ac1725ba162c | 260 | GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */ |
| segundo | 0:ac1725ba162c | 261 | GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */ |
| segundo | 0:ac1725ba162c | 262 | GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */ |
| segundo | 0:ac1725ba162c | 263 | GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */ |
| segundo | 0:ac1725ba162c | 264 | GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */ |
| segundo | 0:ac1725ba162c | 265 | GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */ |
| segundo | 0:ac1725ba162c | 266 | GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */ |
| segundo | 0:ac1725ba162c | 267 | |
| segundo | 0:ac1725ba162c | 268 | /* Round 3 */ |
| segundo | 0:ac1725ba162c | 269 | #define S31 4 |
| segundo | 0:ac1725ba162c | 270 | #define S32 11 |
| segundo | 0:ac1725ba162c | 271 | #define S33 16 |
| segundo | 0:ac1725ba162c | 272 | #define S34 23 |
| segundo | 0:ac1725ba162c | 273 | HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */ |
| segundo | 0:ac1725ba162c | 274 | HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */ |
| segundo | 0:ac1725ba162c | 275 | HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */ |
| segundo | 0:ac1725ba162c | 276 | HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */ |
| segundo | 0:ac1725ba162c | 277 | HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */ |
| segundo | 0:ac1725ba162c | 278 | HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */ |
| segundo | 0:ac1725ba162c | 279 | HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */ |
| segundo | 0:ac1725ba162c | 280 | HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */ |
| segundo | 0:ac1725ba162c | 281 | HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */ |
| segundo | 0:ac1725ba162c | 282 | HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */ |
| segundo | 0:ac1725ba162c | 283 | HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */ |
| segundo | 0:ac1725ba162c | 284 | HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */ |
| segundo | 0:ac1725ba162c | 285 | HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */ |
| segundo | 0:ac1725ba162c | 286 | HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */ |
| segundo | 0:ac1725ba162c | 287 | HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */ |
| segundo | 0:ac1725ba162c | 288 | HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */ |
| segundo | 0:ac1725ba162c | 289 | |
| segundo | 0:ac1725ba162c | 290 | /* Round 4 */ |
| segundo | 0:ac1725ba162c | 291 | #define S41 6 |
| segundo | 0:ac1725ba162c | 292 | #define S42 10 |
| segundo | 0:ac1725ba162c | 293 | #define S43 15 |
| segundo | 0:ac1725ba162c | 294 | #define S44 21 |
| segundo | 0:ac1725ba162c | 295 | II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */ |
| segundo | 0:ac1725ba162c | 296 | II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */ |
| segundo | 0:ac1725ba162c | 297 | II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */ |
| segundo | 0:ac1725ba162c | 298 | II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */ |
| segundo | 0:ac1725ba162c | 299 | II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */ |
| segundo | 0:ac1725ba162c | 300 | II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */ |
| segundo | 0:ac1725ba162c | 301 | II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */ |
| segundo | 0:ac1725ba162c | 302 | II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */ |
| segundo | 0:ac1725ba162c | 303 | II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */ |
| segundo | 0:ac1725ba162c | 304 | II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */ |
| segundo | 0:ac1725ba162c | 305 | II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */ |
| segundo | 0:ac1725ba162c | 306 | II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */ |
| segundo | 0:ac1725ba162c | 307 | II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */ |
| segundo | 0:ac1725ba162c | 308 | II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */ |
| segundo | 0:ac1725ba162c | 309 | II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */ |
| segundo | 0:ac1725ba162c | 310 | II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */ |
| segundo | 0:ac1725ba162c | 311 | |
| segundo | 0:ac1725ba162c | 312 | buf[0] += a; |
| segundo | 0:ac1725ba162c | 313 | buf[1] += b; |
| segundo | 0:ac1725ba162c | 314 | buf[2] += c; |
| segundo | 0:ac1725ba162c | 315 | buf[3] += d; |
| segundo | 0:ac1725ba162c | 316 | } |
| segundo | 0:ac1725ba162c | 317 | |
| segundo | 0:ac1725ba162c | 318 | #endif /* CHAP_SUPPORT || MD5_SUPPORT */ |
| segundo | 0:ac1725ba162c | 319 | |
| segundo | 0:ac1725ba162c | 320 | #endif /* PPP_SUPPORT */ |