Richard Blimmel / Mbed 2 deprecated CIG_HTTPClient

HTTPClient using static IP

Dependencies:   mbed

NetServices/lwip/netif/ppp/md5.c@0:d8f2f7d5f31b, 2011-05-30 (annotated)

Committer:
mr_q
Date:
Mon May 30 11:53:37 2011 +0000
Revision:
0:d8f2f7d5f31b
v0.01 Draft

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mr_q 0:d8f2f7d5f31b 1 /*
mr_q 0:d8f2f7d5f31b 2 ***********************************************************************
mr_q 0:d8f2f7d5f31b 3 ** md5.c -- the source code for MD5 routines **
mr_q 0:d8f2f7d5f31b 4 ** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
mr_q 0:d8f2f7d5f31b 5 ** Created: 2/17/90 RLR **
mr_q 0:d8f2f7d5f31b 6 ** Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr. **
mr_q 0:d8f2f7d5f31b 7 ***********************************************************************
mr_q 0:d8f2f7d5f31b 8 */
mr_q 0:d8f2f7d5f31b 9
mr_q 0:d8f2f7d5f31b 10 /*
mr_q 0:d8f2f7d5f31b 11 ***********************************************************************
mr_q 0:d8f2f7d5f31b 12 ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
mr_q 0:d8f2f7d5f31b 13 ** **
mr_q 0:d8f2f7d5f31b 14 ** License to copy and use this software is granted provided that **
mr_q 0:d8f2f7d5f31b 15 ** it is identified as the "RSA Data Security, Inc. MD5 Message- **
mr_q 0:d8f2f7d5f31b 16 ** Digest Algorithm" in all material mentioning or referencing this **
mr_q 0:d8f2f7d5f31b 17 ** software or this function. **
mr_q 0:d8f2f7d5f31b 18 ** **
mr_q 0:d8f2f7d5f31b 19 ** License is also granted to make and use derivative works **
mr_q 0:d8f2f7d5f31b 20 ** provided that such works are identified as "derived from the RSA **
mr_q 0:d8f2f7d5f31b 21 ** Data Security, Inc. MD5 Message-Digest Algorithm" in all **
mr_q 0:d8f2f7d5f31b 22 ** material mentioning or referencing the derived work. **
mr_q 0:d8f2f7d5f31b 23 ** **
mr_q 0:d8f2f7d5f31b 24 ** RSA Data Security, Inc. makes no representations concerning **
mr_q 0:d8f2f7d5f31b 25 ** either the merchantability of this software or the suitability **
mr_q 0:d8f2f7d5f31b 26 ** of this software for any particular purpose. It is provided "as **
mr_q 0:d8f2f7d5f31b 27 ** is" without express or implied warranty of any kind. **
mr_q 0:d8f2f7d5f31b 28 ** **
mr_q 0:d8f2f7d5f31b 29 ** These notices must be retained in any copies of any part of this **
mr_q 0:d8f2f7d5f31b 30 ** documentation and/or software. **
mr_q 0:d8f2f7d5f31b 31 ***********************************************************************
mr_q 0:d8f2f7d5f31b 32 */
mr_q 0:d8f2f7d5f31b 33
mr_q 0:d8f2f7d5f31b 34 #include "lwip/opt.h"
mr_q 0:d8f2f7d5f31b 35
mr_q 0:d8f2f7d5f31b 36 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
mr_q 0:d8f2f7d5f31b 37
mr_q 0:d8f2f7d5f31b 38 #if CHAP_SUPPORT || MD5_SUPPORT
mr_q 0:d8f2f7d5f31b 39
mr_q 0:d8f2f7d5f31b 40 #include "ppp.h"
mr_q 0:d8f2f7d5f31b 41 #include "pppdebug.h"
mr_q 0:d8f2f7d5f31b 42
mr_q 0:d8f2f7d5f31b 43 #include "md5.h"
mr_q 0:d8f2f7d5f31b 44
mr_q 0:d8f2f7d5f31b 45 #include <string.h>
mr_q 0:d8f2f7d5f31b 46
mr_q 0:d8f2f7d5f31b 47 /*
mr_q 0:d8f2f7d5f31b 48 ***********************************************************************
mr_q 0:d8f2f7d5f31b 49 ** Message-digest routines: **
mr_q 0:d8f2f7d5f31b 50 ** To form the message digest for a message M **
mr_q 0:d8f2f7d5f31b 51 ** (1) Initialize a context buffer mdContext using MD5Init **
mr_q 0:d8f2f7d5f31b 52 ** (2) Call MD5Update on mdContext and M **
mr_q 0:d8f2f7d5f31b 53 ** (3) Call MD5Final on mdContext **
mr_q 0:d8f2f7d5f31b 54 ** The message digest is now in mdContext->digest[0...15] **
mr_q 0:d8f2f7d5f31b 55 ***********************************************************************
mr_q 0:d8f2f7d5f31b 56 */
mr_q 0:d8f2f7d5f31b 57
mr_q 0:d8f2f7d5f31b 58 /* forward declaration */
mr_q 0:d8f2f7d5f31b 59 static void Transform (u32_t *buf, u32_t *in);
mr_q 0:d8f2f7d5f31b 60
mr_q 0:d8f2f7d5f31b 61 static unsigned char PADDING[64] = {
mr_q 0:d8f2f7d5f31b 62 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
mr_q 0:d8f2f7d5f31b 63 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
mr_q 0:d8f2f7d5f31b 64 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
mr_q 0:d8f2f7d5f31b 65 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
mr_q 0:d8f2f7d5f31b 66 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
mr_q 0:d8f2f7d5f31b 67 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
mr_q 0:d8f2f7d5f31b 68 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
mr_q 0:d8f2f7d5f31b 69 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
mr_q 0:d8f2f7d5f31b 70 };
mr_q 0:d8f2f7d5f31b 71
mr_q 0:d8f2f7d5f31b 72 /* F, G, H and I are basic MD5 functions */
mr_q 0:d8f2f7d5f31b 73 #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
mr_q 0:d8f2f7d5f31b 74 #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
mr_q 0:d8f2f7d5f31b 75 #define H(x, y, z) ((x) ^ (y) ^ (z))
mr_q 0:d8f2f7d5f31b 76 #define I(x, y, z) ((y) ^ ((x) | (~z)))
mr_q 0:d8f2f7d5f31b 77
mr_q 0:d8f2f7d5f31b 78 /* ROTATE_LEFT rotates x left n bits */
mr_q 0:d8f2f7d5f31b 79 #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
mr_q 0:d8f2f7d5f31b 80
mr_q 0:d8f2f7d5f31b 81 /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
mr_q 0:d8f2f7d5f31b 82 /* Rotation is separate from addition to prevent recomputation */
mr_q 0:d8f2f7d5f31b 83 #define FF(a, b, c, d, x, s, ac) \
mr_q 0:d8f2f7d5f31b 84 {(a) += F ((b), (c), (d)) + (x) + (u32_t)(ac); \
mr_q 0:d8f2f7d5f31b 85 (a) = ROTATE_LEFT ((a), (s)); \
mr_q 0:d8f2f7d5f31b 86 (a) += (b); \
mr_q 0:d8f2f7d5f31b 87 }
mr_q 0:d8f2f7d5f31b 88 #define GG(a, b, c, d, x, s, ac) \
mr_q 0:d8f2f7d5f31b 89 {(a) += G ((b), (c), (d)) + (x) + (u32_t)(ac); \
mr_q 0:d8f2f7d5f31b 90 (a) = ROTATE_LEFT ((a), (s)); \
mr_q 0:d8f2f7d5f31b 91 (a) += (b); \
mr_q 0:d8f2f7d5f31b 92 }
mr_q 0:d8f2f7d5f31b 93 #define HH(a, b, c, d, x, s, ac) \
mr_q 0:d8f2f7d5f31b 94 {(a) += H ((b), (c), (d)) + (x) + (u32_t)(ac); \
mr_q 0:d8f2f7d5f31b 95 (a) = ROTATE_LEFT ((a), (s)); \
mr_q 0:d8f2f7d5f31b 96 (a) += (b); \
mr_q 0:d8f2f7d5f31b 97 }
mr_q 0:d8f2f7d5f31b 98 #define II(a, b, c, d, x, s, ac) \
mr_q 0:d8f2f7d5f31b 99 {(a) += I ((b), (c), (d)) + (x) + (u32_t)(ac); \
mr_q 0:d8f2f7d5f31b 100 (a) = ROTATE_LEFT ((a), (s)); \
mr_q 0:d8f2f7d5f31b 101 (a) += (b); \
mr_q 0:d8f2f7d5f31b 102 }
mr_q 0:d8f2f7d5f31b 103
mr_q 0:d8f2f7d5f31b 104 #ifdef __STDC__
mr_q 0:d8f2f7d5f31b 105 #define UL(x) x##UL
mr_q 0:d8f2f7d5f31b 106 #else
mr_q 0:d8f2f7d5f31b 107 #ifdef WIN32
mr_q 0:d8f2f7d5f31b 108 #define UL(x) x##UL
mr_q 0:d8f2f7d5f31b 109 #else
mr_q 0:d8f2f7d5f31b 110 #define UL(x) x
mr_q 0:d8f2f7d5f31b 111 #endif
mr_q 0:d8f2f7d5f31b 112 #endif
mr_q 0:d8f2f7d5f31b 113
mr_q 0:d8f2f7d5f31b 114 /* The routine MD5Init initializes the message-digest context
mr_q 0:d8f2f7d5f31b 115 mdContext. All fields are set to zero.
mr_q 0:d8f2f7d5f31b 116 */
mr_q 0:d8f2f7d5f31b 117 void
mr_q 0:d8f2f7d5f31b 118 MD5Init (MD5_CTX *mdContext)
mr_q 0:d8f2f7d5f31b 119 {
mr_q 0:d8f2f7d5f31b 120 mdContext->i[0] = mdContext->i[1] = (u32_t)0;
mr_q 0:d8f2f7d5f31b 121
mr_q 0:d8f2f7d5f31b 122 /* Load magic initialization constants. */
mr_q 0:d8f2f7d5f31b 123 mdContext->buf[0] = (u32_t)0x67452301UL;
mr_q 0:d8f2f7d5f31b 124 mdContext->buf[1] = (u32_t)0xefcdab89UL;
mr_q 0:d8f2f7d5f31b 125 mdContext->buf[2] = (u32_t)0x98badcfeUL;
mr_q 0:d8f2f7d5f31b 126 mdContext->buf[3] = (u32_t)0x10325476UL;
mr_q 0:d8f2f7d5f31b 127 }
mr_q 0:d8f2f7d5f31b 128
mr_q 0:d8f2f7d5f31b 129 /* The routine MD5Update updates the message-digest context to
mr_q 0:d8f2f7d5f31b 130 account for the presence of each of the characters inBuf[0..inLen-1]
mr_q 0:d8f2f7d5f31b 131 in the message whose digest is being computed.
mr_q 0:d8f2f7d5f31b 132 */
mr_q 0:d8f2f7d5f31b 133 void
mr_q 0:d8f2f7d5f31b 134 MD5Update(MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen)
mr_q 0:d8f2f7d5f31b 135 {
mr_q 0:d8f2f7d5f31b 136 u32_t in[16];
mr_q 0:d8f2f7d5f31b 137 int mdi;
mr_q 0:d8f2f7d5f31b 138 unsigned int i, ii;
mr_q 0:d8f2f7d5f31b 139
mr_q 0:d8f2f7d5f31b 140 #if 0
mr_q 0:d8f2f7d5f31b 141 PPPDEBUG(LOG_INFO, ("MD5Update: %u:%.*H\n", inLen, LWIP_MIN(inLen, 20) * 2, inBuf));
mr_q 0:d8f2f7d5f31b 142 PPPDEBUG(LOG_INFO, ("MD5Update: %u:%s\n", inLen, inBuf));
mr_q 0:d8f2f7d5f31b 143 #endif
mr_q 0:d8f2f7d5f31b 144
mr_q 0:d8f2f7d5f31b 145 /* compute number of bytes mod 64 */
mr_q 0:d8f2f7d5f31b 146 mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
mr_q 0:d8f2f7d5f31b 147
mr_q 0:d8f2f7d5f31b 148 /* update number of bits */
mr_q 0:d8f2f7d5f31b 149 if ((mdContext->i[0] + ((u32_t)inLen << 3)) < mdContext->i[0]) {
mr_q 0:d8f2f7d5f31b 150 mdContext->i[1]++;
mr_q 0:d8f2f7d5f31b 151 }
mr_q 0:d8f2f7d5f31b 152 mdContext->i[0] += ((u32_t)inLen << 3);
mr_q 0:d8f2f7d5f31b 153 mdContext->i[1] += ((u32_t)inLen >> 29);
mr_q 0:d8f2f7d5f31b 154
mr_q 0:d8f2f7d5f31b 155 while (inLen--) {
mr_q 0:d8f2f7d5f31b 156 /* add new character to buffer, increment mdi */
mr_q 0:d8f2f7d5f31b 157 mdContext->in[mdi++] = *inBuf++;
mr_q 0:d8f2f7d5f31b 158
mr_q 0:d8f2f7d5f31b 159 /* transform if necessary */
mr_q 0:d8f2f7d5f31b 160 if (mdi == 0x40) {
mr_q 0:d8f2f7d5f31b 161 for (i = 0, ii = 0; i < 16; i++, ii += 4) {
mr_q 0:d8f2f7d5f31b 162 in[i] = (((u32_t)mdContext->in[ii+3]) << 24) |
mr_q 0:d8f2f7d5f31b 163 (((u32_t)mdContext->in[ii+2]) << 16) |
mr_q 0:d8f2f7d5f31b 164 (((u32_t)mdContext->in[ii+1]) << 8) |
mr_q 0:d8f2f7d5f31b 165 ((u32_t)mdContext->in[ii]);
mr_q 0:d8f2f7d5f31b 166 }
mr_q 0:d8f2f7d5f31b 167 Transform (mdContext->buf, in);
mr_q 0:d8f2f7d5f31b 168 mdi = 0;
mr_q 0:d8f2f7d5f31b 169 }
mr_q 0:d8f2f7d5f31b 170 }
mr_q 0:d8f2f7d5f31b 171 }
mr_q 0:d8f2f7d5f31b 172
mr_q 0:d8f2f7d5f31b 173 /* The routine MD5Final terminates the message-digest computation and
mr_q 0:d8f2f7d5f31b 174 ends with the desired message digest in mdContext->digest[0...15].
mr_q 0:d8f2f7d5f31b 175 */
mr_q 0:d8f2f7d5f31b 176 void
mr_q 0:d8f2f7d5f31b 177 MD5Final (unsigned char hash[], MD5_CTX *mdContext)
mr_q 0:d8f2f7d5f31b 178 {
mr_q 0:d8f2f7d5f31b 179 u32_t in[16];
mr_q 0:d8f2f7d5f31b 180 int mdi;
mr_q 0:d8f2f7d5f31b 181 unsigned int i, ii;
mr_q 0:d8f2f7d5f31b 182 unsigned int padLen;
mr_q 0:d8f2f7d5f31b 183
mr_q 0:d8f2f7d5f31b 184 /* save number of bits */
mr_q 0:d8f2f7d5f31b 185 in[14] = mdContext->i[0];
mr_q 0:d8f2f7d5f31b 186 in[15] = mdContext->i[1];
mr_q 0:d8f2f7d5f31b 187
mr_q 0:d8f2f7d5f31b 188 /* compute number of bytes mod 64 */
mr_q 0:d8f2f7d5f31b 189 mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
mr_q 0:d8f2f7d5f31b 190
mr_q 0:d8f2f7d5f31b 191 /* pad out to 56 mod 64 */
mr_q 0:d8f2f7d5f31b 192 padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
mr_q 0:d8f2f7d5f31b 193 MD5Update (mdContext, PADDING, padLen);
mr_q 0:d8f2f7d5f31b 194
mr_q 0:d8f2f7d5f31b 195 /* append length in bits and transform */
mr_q 0:d8f2f7d5f31b 196 for (i = 0, ii = 0; i < 14; i++, ii += 4) {
mr_q 0:d8f2f7d5f31b 197 in[i] = (((u32_t)mdContext->in[ii+3]) << 24) |
mr_q 0:d8f2f7d5f31b 198 (((u32_t)mdContext->in[ii+2]) << 16) |
mr_q 0:d8f2f7d5f31b 199 (((u32_t)mdContext->in[ii+1]) << 8) |
mr_q 0:d8f2f7d5f31b 200 ((u32_t)mdContext->in[ii]);
mr_q 0:d8f2f7d5f31b 201 }
mr_q 0:d8f2f7d5f31b 202 Transform (mdContext->buf, in);
mr_q 0:d8f2f7d5f31b 203
mr_q 0:d8f2f7d5f31b 204 /* store buffer in digest */
mr_q 0:d8f2f7d5f31b 205 for (i = 0, ii = 0; i < 4; i++, ii += 4) {
mr_q 0:d8f2f7d5f31b 206 mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF);
mr_q 0:d8f2f7d5f31b 207 mdContext->digest[ii+1] =
mr_q 0:d8f2f7d5f31b 208 (unsigned char)((mdContext->buf[i] >> 8) & 0xFF);
mr_q 0:d8f2f7d5f31b 209 mdContext->digest[ii+2] =
mr_q 0:d8f2f7d5f31b 210 (unsigned char)((mdContext->buf[i] >> 16) & 0xFF);
mr_q 0:d8f2f7d5f31b 211 mdContext->digest[ii+3] =
mr_q 0:d8f2f7d5f31b 212 (unsigned char)((mdContext->buf[i] >> 24) & 0xFF);
mr_q 0:d8f2f7d5f31b 213 }
mr_q 0:d8f2f7d5f31b 214 SMEMCPY(hash, mdContext->digest, 16);
mr_q 0:d8f2f7d5f31b 215 }
mr_q 0:d8f2f7d5f31b 216
mr_q 0:d8f2f7d5f31b 217 /* Basic MD5 step. Transforms buf based on in.
mr_q 0:d8f2f7d5f31b 218 */
mr_q 0:d8f2f7d5f31b 219 static void
mr_q 0:d8f2f7d5f31b 220 Transform (u32_t *buf, u32_t *in)
mr_q 0:d8f2f7d5f31b 221 {
mr_q 0:d8f2f7d5f31b 222 u32_t a = buf[0], b = buf[1], c = buf[2], d = buf[3];
mr_q 0:d8f2f7d5f31b 223
mr_q 0:d8f2f7d5f31b 224 /* Round 1 */
mr_q 0:d8f2f7d5f31b 225 #define S11 7
mr_q 0:d8f2f7d5f31b 226 #define S12 12
mr_q 0:d8f2f7d5f31b 227 #define S13 17
mr_q 0:d8f2f7d5f31b 228 #define S14 22
mr_q 0:d8f2f7d5f31b 229 FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */
mr_q 0:d8f2f7d5f31b 230 FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */
mr_q 0:d8f2f7d5f31b 231 FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */
mr_q 0:d8f2f7d5f31b 232 FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */
mr_q 0:d8f2f7d5f31b 233 FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */
mr_q 0:d8f2f7d5f31b 234 FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */
mr_q 0:d8f2f7d5f31b 235 FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */
mr_q 0:d8f2f7d5f31b 236 FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */
mr_q 0:d8f2f7d5f31b 237 FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */
mr_q 0:d8f2f7d5f31b 238 FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */
mr_q 0:d8f2f7d5f31b 239 FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */
mr_q 0:d8f2f7d5f31b 240 FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */
mr_q 0:d8f2f7d5f31b 241 FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */
mr_q 0:d8f2f7d5f31b 242 FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */
mr_q 0:d8f2f7d5f31b 243 FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */
mr_q 0:d8f2f7d5f31b 244 FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */
mr_q 0:d8f2f7d5f31b 245
mr_q 0:d8f2f7d5f31b 246 /* Round 2 */
mr_q 0:d8f2f7d5f31b 247 #define S21 5
mr_q 0:d8f2f7d5f31b 248 #define S22 9
mr_q 0:d8f2f7d5f31b 249 #define S23 14
mr_q 0:d8f2f7d5f31b 250 #define S24 20
mr_q 0:d8f2f7d5f31b 251 GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */
mr_q 0:d8f2f7d5f31b 252 GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */
mr_q 0:d8f2f7d5f31b 253 GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */
mr_q 0:d8f2f7d5f31b 254 GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */
mr_q 0:d8f2f7d5f31b 255 GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */
mr_q 0:d8f2f7d5f31b 256 GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */
mr_q 0:d8f2f7d5f31b 257 GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */
mr_q 0:d8f2f7d5f31b 258 GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */
mr_q 0:d8f2f7d5f31b 259 GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */
mr_q 0:d8f2f7d5f31b 260 GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */
mr_q 0:d8f2f7d5f31b 261 GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */
mr_q 0:d8f2f7d5f31b 262 GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */
mr_q 0:d8f2f7d5f31b 263 GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */
mr_q 0:d8f2f7d5f31b 264 GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */
mr_q 0:d8f2f7d5f31b 265 GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */
mr_q 0:d8f2f7d5f31b 266 GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */
mr_q 0:d8f2f7d5f31b 267
mr_q 0:d8f2f7d5f31b 268 /* Round 3 */
mr_q 0:d8f2f7d5f31b 269 #define S31 4
mr_q 0:d8f2f7d5f31b 270 #define S32 11
mr_q 0:d8f2f7d5f31b 271 #define S33 16
mr_q 0:d8f2f7d5f31b 272 #define S34 23
mr_q 0:d8f2f7d5f31b 273 HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */
mr_q 0:d8f2f7d5f31b 274 HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */
mr_q 0:d8f2f7d5f31b 275 HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */
mr_q 0:d8f2f7d5f31b 276 HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */
mr_q 0:d8f2f7d5f31b 277 HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */
mr_q 0:d8f2f7d5f31b 278 HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */
mr_q 0:d8f2f7d5f31b 279 HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */
mr_q 0:d8f2f7d5f31b 280 HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */
mr_q 0:d8f2f7d5f31b 281 HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */
mr_q 0:d8f2f7d5f31b 282 HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */
mr_q 0:d8f2f7d5f31b 283 HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */
mr_q 0:d8f2f7d5f31b 284 HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */
mr_q 0:d8f2f7d5f31b 285 HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */
mr_q 0:d8f2f7d5f31b 286 HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */
mr_q 0:d8f2f7d5f31b 287 HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */
mr_q 0:d8f2f7d5f31b 288 HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */
mr_q 0:d8f2f7d5f31b 289
mr_q 0:d8f2f7d5f31b 290 /* Round 4 */
mr_q 0:d8f2f7d5f31b 291 #define S41 6
mr_q 0:d8f2f7d5f31b 292 #define S42 10
mr_q 0:d8f2f7d5f31b 293 #define S43 15
mr_q 0:d8f2f7d5f31b 294 #define S44 21
mr_q 0:d8f2f7d5f31b 295 II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */
mr_q 0:d8f2f7d5f31b 296 II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */
mr_q 0:d8f2f7d5f31b 297 II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */
mr_q 0:d8f2f7d5f31b 298 II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */
mr_q 0:d8f2f7d5f31b 299 II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */
mr_q 0:d8f2f7d5f31b 300 II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */
mr_q 0:d8f2f7d5f31b 301 II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */
mr_q 0:d8f2f7d5f31b 302 II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */
mr_q 0:d8f2f7d5f31b 303 II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */
mr_q 0:d8f2f7d5f31b 304 II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */
mr_q 0:d8f2f7d5f31b 305 II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */
mr_q 0:d8f2f7d5f31b 306 II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */
mr_q 0:d8f2f7d5f31b 307 II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */
mr_q 0:d8f2f7d5f31b 308 II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */
mr_q 0:d8f2f7d5f31b 309 II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */
mr_q 0:d8f2f7d5f31b 310 II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */
mr_q 0:d8f2f7d5f31b 311
mr_q 0:d8f2f7d5f31b 312 buf[0] += a;
mr_q 0:d8f2f7d5f31b 313 buf[1] += b;
mr_q 0:d8f2f7d5f31b 314 buf[2] += c;
mr_q 0:d8f2f7d5f31b 315 buf[3] += d;
mr_q 0:d8f2f7d5f31b 316 }
mr_q 0:d8f2f7d5f31b 317
mr_q 0:d8f2f7d5f31b 318 #endif /* CHAP_SUPPORT || MD5_SUPPORT */
mr_q 0:d8f2f7d5f31b 319
mr_q 0:d8f2f7d5f31b 320 #endif /* PPP_SUPPORT */