Lorcan Smith / Mbed 2 deprecated Enet_SPI

SNMP agent attached to SPI slave

Dependencies:   mbed

lwip/netif/ppp/md5.c@0:2a53a4c3238c, 2012-08-13 (annotated)

Committer:
lorcansmith
Date:
Mon Aug 13 15:07:40 2012 +0000
Revision:
0:2a53a4c3238c
v1.1 release includes ioAlarm traps

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lorcansmith 0:2a53a4c3238c 1 /*
lorcansmith 0:2a53a4c3238c 2 ***********************************************************************
lorcansmith 0:2a53a4c3238c 3 ** md5.c -- the source code for MD5 routines **
lorcansmith 0:2a53a4c3238c 4 ** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
lorcansmith 0:2a53a4c3238c 5 ** Created: 2/17/90 RLR **
lorcansmith 0:2a53a4c3238c 6 ** Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr. **
lorcansmith 0:2a53a4c3238c 7 ***********************************************************************
lorcansmith 0:2a53a4c3238c 8 */
lorcansmith 0:2a53a4c3238c 9
lorcansmith 0:2a53a4c3238c 10 /*
lorcansmith 0:2a53a4c3238c 11 ***********************************************************************
lorcansmith 0:2a53a4c3238c 12 ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
lorcansmith 0:2a53a4c3238c 13 ** **
lorcansmith 0:2a53a4c3238c 14 ** License to copy and use this software is granted provided that **
lorcansmith 0:2a53a4c3238c 15 ** it is identified as the "RSA Data Security, Inc. MD5 Message- **
lorcansmith 0:2a53a4c3238c 16 ** Digest Algorithm" in all material mentioning or referencing this **
lorcansmith 0:2a53a4c3238c 17 ** software or this function. **
lorcansmith 0:2a53a4c3238c 18 ** **
lorcansmith 0:2a53a4c3238c 19 ** License is also granted to make and use derivative works **
lorcansmith 0:2a53a4c3238c 20 ** provided that such works are identified as "derived from the RSA **
lorcansmith 0:2a53a4c3238c 21 ** Data Security, Inc. MD5 Message-Digest Algorithm" in all **
lorcansmith 0:2a53a4c3238c 22 ** material mentioning or referencing the derived work. **
lorcansmith 0:2a53a4c3238c 23 ** **
lorcansmith 0:2a53a4c3238c 24 ** RSA Data Security, Inc. makes no representations concerning **
lorcansmith 0:2a53a4c3238c 25 ** either the merchantability of this software or the suitability **
lorcansmith 0:2a53a4c3238c 26 ** of this software for any particular purpose. It is provided "as **
lorcansmith 0:2a53a4c3238c 27 ** is" without express or implied warranty of any kind. **
lorcansmith 0:2a53a4c3238c 28 ** **
lorcansmith 0:2a53a4c3238c 29 ** These notices must be retained in any copies of any part of this **
lorcansmith 0:2a53a4c3238c 30 ** documentation and/or software. **
lorcansmith 0:2a53a4c3238c 31 ***********************************************************************
lorcansmith 0:2a53a4c3238c 32 */
lorcansmith 0:2a53a4c3238c 33
lorcansmith 0:2a53a4c3238c 34 #include "lwip/opt.h"
lorcansmith 0:2a53a4c3238c 35
lorcansmith 0:2a53a4c3238c 36 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
lorcansmith 0:2a53a4c3238c 37
lorcansmith 0:2a53a4c3238c 38 #if CHAP_SUPPORT || MD5_SUPPORT
lorcansmith 0:2a53a4c3238c 39
lorcansmith 0:2a53a4c3238c 40 #include "ppp.h"
lorcansmith 0:2a53a4c3238c 41 #include "pppdebug.h"
lorcansmith 0:2a53a4c3238c 42
lorcansmith 0:2a53a4c3238c 43 #include "md5.h"
lorcansmith 0:2a53a4c3238c 44
lorcansmith 0:2a53a4c3238c 45 #include <string.h>
lorcansmith 0:2a53a4c3238c 46
lorcansmith 0:2a53a4c3238c 47 /*
lorcansmith 0:2a53a4c3238c 48 ***********************************************************************
lorcansmith 0:2a53a4c3238c 49 ** Message-digest routines: **
lorcansmith 0:2a53a4c3238c 50 ** To form the message digest for a message M **
lorcansmith 0:2a53a4c3238c 51 ** (1) Initialize a context buffer mdContext using MD5Init **
lorcansmith 0:2a53a4c3238c 52 ** (2) Call MD5Update on mdContext and M **
lorcansmith 0:2a53a4c3238c 53 ** (3) Call MD5Final on mdContext **
lorcansmith 0:2a53a4c3238c 54 ** The message digest is now in mdContext->digest[0...15] **
lorcansmith 0:2a53a4c3238c 55 ***********************************************************************
lorcansmith 0:2a53a4c3238c 56 */
lorcansmith 0:2a53a4c3238c 57
lorcansmith 0:2a53a4c3238c 58 /* forward declaration */
lorcansmith 0:2a53a4c3238c 59 static void Transform (u32_t *buf, u32_t *in);
lorcansmith 0:2a53a4c3238c 60
lorcansmith 0:2a53a4c3238c 61 static unsigned char PADDING[64] = {
lorcansmith 0:2a53a4c3238c 62 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
lorcansmith 0:2a53a4c3238c 63 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
lorcansmith 0:2a53a4c3238c 64 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
lorcansmith 0:2a53a4c3238c 65 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
lorcansmith 0:2a53a4c3238c 66 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
lorcansmith 0:2a53a4c3238c 67 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
lorcansmith 0:2a53a4c3238c 68 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
lorcansmith 0:2a53a4c3238c 69 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
lorcansmith 0:2a53a4c3238c 70 };
lorcansmith 0:2a53a4c3238c 71
lorcansmith 0:2a53a4c3238c 72 /* F, G, H and I are basic MD5 functions */
lorcansmith 0:2a53a4c3238c 73 #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
lorcansmith 0:2a53a4c3238c 74 #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
lorcansmith 0:2a53a4c3238c 75 #define H(x, y, z) ((x) ^ (y) ^ (z))
lorcansmith 0:2a53a4c3238c 76 #define I(x, y, z) ((y) ^ ((x) | (~z)))
lorcansmith 0:2a53a4c3238c 77
lorcansmith 0:2a53a4c3238c 78 /* ROTATE_LEFT rotates x left n bits */
lorcansmith 0:2a53a4c3238c 79 #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
lorcansmith 0:2a53a4c3238c 80
lorcansmith 0:2a53a4c3238c 81 /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
lorcansmith 0:2a53a4c3238c 82 /* Rotation is separate from addition to prevent recomputation */
lorcansmith 0:2a53a4c3238c 83 #define FF(a, b, c, d, x, s, ac) \
lorcansmith 0:2a53a4c3238c 84 {(a) += F ((b), (c), (d)) + (x) + (u32_t)(ac); \
lorcansmith 0:2a53a4c3238c 85 (a) = ROTATE_LEFT ((a), (s)); \
lorcansmith 0:2a53a4c3238c 86 (a) += (b); \
lorcansmith 0:2a53a4c3238c 87 }
lorcansmith 0:2a53a4c3238c 88 #define GG(a, b, c, d, x, s, ac) \
lorcansmith 0:2a53a4c3238c 89 {(a) += G ((b), (c), (d)) + (x) + (u32_t)(ac); \
lorcansmith 0:2a53a4c3238c 90 (a) = ROTATE_LEFT ((a), (s)); \
lorcansmith 0:2a53a4c3238c 91 (a) += (b); \
lorcansmith 0:2a53a4c3238c 92 }
lorcansmith 0:2a53a4c3238c 93 #define HH(a, b, c, d, x, s, ac) \
lorcansmith 0:2a53a4c3238c 94 {(a) += H ((b), (c), (d)) + (x) + (u32_t)(ac); \
lorcansmith 0:2a53a4c3238c 95 (a) = ROTATE_LEFT ((a), (s)); \
lorcansmith 0:2a53a4c3238c 96 (a) += (b); \
lorcansmith 0:2a53a4c3238c 97 }
lorcansmith 0:2a53a4c3238c 98 #define II(a, b, c, d, x, s, ac) \
lorcansmith 0:2a53a4c3238c 99 {(a) += I ((b), (c), (d)) + (x) + (u32_t)(ac); \
lorcansmith 0:2a53a4c3238c 100 (a) = ROTATE_LEFT ((a), (s)); \
lorcansmith 0:2a53a4c3238c 101 (a) += (b); \
lorcansmith 0:2a53a4c3238c 102 }
lorcansmith 0:2a53a4c3238c 103
lorcansmith 0:2a53a4c3238c 104 #ifdef __STDC__
lorcansmith 0:2a53a4c3238c 105 #define UL(x) x##UL
lorcansmith 0:2a53a4c3238c 106 #else
lorcansmith 0:2a53a4c3238c 107 #ifdef WIN32
lorcansmith 0:2a53a4c3238c 108 #define UL(x) x##UL
lorcansmith 0:2a53a4c3238c 109 #else
lorcansmith 0:2a53a4c3238c 110 #define UL(x) x
lorcansmith 0:2a53a4c3238c 111 #endif
lorcansmith 0:2a53a4c3238c 112 #endif
lorcansmith 0:2a53a4c3238c 113
lorcansmith 0:2a53a4c3238c 114 /* The routine MD5Init initializes the message-digest context
lorcansmith 0:2a53a4c3238c 115 mdContext. All fields are set to zero.
lorcansmith 0:2a53a4c3238c 116 */
lorcansmith 0:2a53a4c3238c 117 void
lorcansmith 0:2a53a4c3238c 118 MD5Init (MD5_CTX *mdContext)
lorcansmith 0:2a53a4c3238c 119 {
lorcansmith 0:2a53a4c3238c 120 mdContext->i[0] = mdContext->i[1] = (u32_t)0;
lorcansmith 0:2a53a4c3238c 121
lorcansmith 0:2a53a4c3238c 122 /* Load magic initialization constants. */
lorcansmith 0:2a53a4c3238c 123 mdContext->buf[0] = (u32_t)0x67452301UL;
lorcansmith 0:2a53a4c3238c 124 mdContext->buf[1] = (u32_t)0xefcdab89UL;
lorcansmith 0:2a53a4c3238c 125 mdContext->buf[2] = (u32_t)0x98badcfeUL;
lorcansmith 0:2a53a4c3238c 126 mdContext->buf[3] = (u32_t)0x10325476UL;
lorcansmith 0:2a53a4c3238c 127 }
lorcansmith 0:2a53a4c3238c 128
lorcansmith 0:2a53a4c3238c 129 /* The routine MD5Update updates the message-digest context to
lorcansmith 0:2a53a4c3238c 130 account for the presence of each of the characters inBuf[0..inLen-1]
lorcansmith 0:2a53a4c3238c 131 in the message whose digest is being computed.
lorcansmith 0:2a53a4c3238c 132 */
lorcansmith 0:2a53a4c3238c 133 void
lorcansmith 0:2a53a4c3238c 134 MD5Update(MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen)
lorcansmith 0:2a53a4c3238c 135 {
lorcansmith 0:2a53a4c3238c 136 u32_t in[16];
lorcansmith 0:2a53a4c3238c 137 int mdi;
lorcansmith 0:2a53a4c3238c 138 unsigned int i, ii;
lorcansmith 0:2a53a4c3238c 139
lorcansmith 0:2a53a4c3238c 140 #if 0
lorcansmith 0:2a53a4c3238c 141 PPPDEBUG(LOG_INFO, ("MD5Update: %u:%.*H\n", inLen, LWIP_MIN(inLen, 20) * 2, inBuf));
lorcansmith 0:2a53a4c3238c 142 PPPDEBUG(LOG_INFO, ("MD5Update: %u:%s\n", inLen, inBuf));
lorcansmith 0:2a53a4c3238c 143 #endif
lorcansmith 0:2a53a4c3238c 144
lorcansmith 0:2a53a4c3238c 145 /* compute number of bytes mod 64 */
lorcansmith 0:2a53a4c3238c 146 mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
lorcansmith 0:2a53a4c3238c 147
lorcansmith 0:2a53a4c3238c 148 /* update number of bits */
lorcansmith 0:2a53a4c3238c 149 if ((mdContext->i[0] + ((u32_t)inLen << 3)) < mdContext->i[0]) {
lorcansmith 0:2a53a4c3238c 150 mdContext->i[1]++;
lorcansmith 0:2a53a4c3238c 151 }
lorcansmith 0:2a53a4c3238c 152 mdContext->i[0] += ((u32_t)inLen << 3);
lorcansmith 0:2a53a4c3238c 153 mdContext->i[1] += ((u32_t)inLen >> 29);
lorcansmith 0:2a53a4c3238c 154
lorcansmith 0:2a53a4c3238c 155 while (inLen--) {
lorcansmith 0:2a53a4c3238c 156 /* add new character to buffer, increment mdi */
lorcansmith 0:2a53a4c3238c 157 mdContext->in[mdi++] = *inBuf++;
lorcansmith 0:2a53a4c3238c 158
lorcansmith 0:2a53a4c3238c 159 /* transform if necessary */
lorcansmith 0:2a53a4c3238c 160 if (mdi == 0x40) {
lorcansmith 0:2a53a4c3238c 161 for (i = 0, ii = 0; i < 16; i++, ii += 4) {
lorcansmith 0:2a53a4c3238c 162 in[i] = (((u32_t)mdContext->in[ii+3]) << 24) |
lorcansmith 0:2a53a4c3238c 163 (((u32_t)mdContext->in[ii+2]) << 16) |
lorcansmith 0:2a53a4c3238c 164 (((u32_t)mdContext->in[ii+1]) << 8) |
lorcansmith 0:2a53a4c3238c 165 ((u32_t)mdContext->in[ii]);
lorcansmith 0:2a53a4c3238c 166 }
lorcansmith 0:2a53a4c3238c 167 Transform (mdContext->buf, in);
lorcansmith 0:2a53a4c3238c 168 mdi = 0;
lorcansmith 0:2a53a4c3238c 169 }
lorcansmith 0:2a53a4c3238c 170 }
lorcansmith 0:2a53a4c3238c 171 }
lorcansmith 0:2a53a4c3238c 172
lorcansmith 0:2a53a4c3238c 173 /* The routine MD5Final terminates the message-digest computation and
lorcansmith 0:2a53a4c3238c 174 ends with the desired message digest in mdContext->digest[0...15].
lorcansmith 0:2a53a4c3238c 175 */
lorcansmith 0:2a53a4c3238c 176 void
lorcansmith 0:2a53a4c3238c 177 MD5Final (unsigned char hash[], MD5_CTX *mdContext)
lorcansmith 0:2a53a4c3238c 178 {
lorcansmith 0:2a53a4c3238c 179 u32_t in[16];
lorcansmith 0:2a53a4c3238c 180 int mdi;
lorcansmith 0:2a53a4c3238c 181 unsigned int i, ii;
lorcansmith 0:2a53a4c3238c 182 unsigned int padLen;
lorcansmith 0:2a53a4c3238c 183
lorcansmith 0:2a53a4c3238c 184 /* save number of bits */
lorcansmith 0:2a53a4c3238c 185 in[14] = mdContext->i[0];
lorcansmith 0:2a53a4c3238c 186 in[15] = mdContext->i[1];
lorcansmith 0:2a53a4c3238c 187
lorcansmith 0:2a53a4c3238c 188 /* compute number of bytes mod 64 */
lorcansmith 0:2a53a4c3238c 189 mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
lorcansmith 0:2a53a4c3238c 190
lorcansmith 0:2a53a4c3238c 191 /* pad out to 56 mod 64 */
lorcansmith 0:2a53a4c3238c 192 padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
lorcansmith 0:2a53a4c3238c 193 MD5Update (mdContext, PADDING, padLen);
lorcansmith 0:2a53a4c3238c 194
lorcansmith 0:2a53a4c3238c 195 /* append length in bits and transform */
lorcansmith 0:2a53a4c3238c 196 for (i = 0, ii = 0; i < 14; i++, ii += 4) {
lorcansmith 0:2a53a4c3238c 197 in[i] = (((u32_t)mdContext->in[ii+3]) << 24) |
lorcansmith 0:2a53a4c3238c 198 (((u32_t)mdContext->in[ii+2]) << 16) |
lorcansmith 0:2a53a4c3238c 199 (((u32_t)mdContext->in[ii+1]) << 8) |
lorcansmith 0:2a53a4c3238c 200 ((u32_t)mdContext->in[ii]);
lorcansmith 0:2a53a4c3238c 201 }
lorcansmith 0:2a53a4c3238c 202 Transform (mdContext->buf, in);
lorcansmith 0:2a53a4c3238c 203
lorcansmith 0:2a53a4c3238c 204 /* store buffer in digest */
lorcansmith 0:2a53a4c3238c 205 for (i = 0, ii = 0; i < 4; i++, ii += 4) {
lorcansmith 0:2a53a4c3238c 206 mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF);
lorcansmith 0:2a53a4c3238c 207 mdContext->digest[ii+1] =
lorcansmith 0:2a53a4c3238c 208 (unsigned char)((mdContext->buf[i] >> 8) & 0xFF);
lorcansmith 0:2a53a4c3238c 209 mdContext->digest[ii+2] =
lorcansmith 0:2a53a4c3238c 210 (unsigned char)((mdContext->buf[i] >> 16) & 0xFF);
lorcansmith 0:2a53a4c3238c 211 mdContext->digest[ii+3] =
lorcansmith 0:2a53a4c3238c 212 (unsigned char)((mdContext->buf[i] >> 24) & 0xFF);
lorcansmith 0:2a53a4c3238c 213 }
lorcansmith 0:2a53a4c3238c 214 SMEMCPY(hash, mdContext->digest, 16);
lorcansmith 0:2a53a4c3238c 215 }
lorcansmith 0:2a53a4c3238c 216
lorcansmith 0:2a53a4c3238c 217 /* Basic MD5 step. Transforms buf based on in.
lorcansmith 0:2a53a4c3238c 218 */
lorcansmith 0:2a53a4c3238c 219 static void
lorcansmith 0:2a53a4c3238c 220 Transform (u32_t *buf, u32_t *in)
lorcansmith 0:2a53a4c3238c 221 {
lorcansmith 0:2a53a4c3238c 222 u32_t a = buf[0], b = buf[1], c = buf[2], d = buf[3];
lorcansmith 0:2a53a4c3238c 223
lorcansmith 0:2a53a4c3238c 224 /* Round 1 */
lorcansmith 0:2a53a4c3238c 225 #define S11 7
lorcansmith 0:2a53a4c3238c 226 #define S12 12
lorcansmith 0:2a53a4c3238c 227 #define S13 17
lorcansmith 0:2a53a4c3238c 228 #define S14 22
lorcansmith 0:2a53a4c3238c 229 FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */
lorcansmith 0:2a53a4c3238c 230 FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */
lorcansmith 0:2a53a4c3238c 231 FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */
lorcansmith 0:2a53a4c3238c 232 FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */
lorcansmith 0:2a53a4c3238c 233 FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */
lorcansmith 0:2a53a4c3238c 234 FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */
lorcansmith 0:2a53a4c3238c 235 FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */
lorcansmith 0:2a53a4c3238c 236 FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */
lorcansmith 0:2a53a4c3238c 237 FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */
lorcansmith 0:2a53a4c3238c 238 FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */
lorcansmith 0:2a53a4c3238c 239 FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */
lorcansmith 0:2a53a4c3238c 240 FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */
lorcansmith 0:2a53a4c3238c 241 FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */
lorcansmith 0:2a53a4c3238c 242 FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */
lorcansmith 0:2a53a4c3238c 243 FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */
lorcansmith 0:2a53a4c3238c 244 FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */
lorcansmith 0:2a53a4c3238c 245
lorcansmith 0:2a53a4c3238c 246 /* Round 2 */
lorcansmith 0:2a53a4c3238c 247 #define S21 5
lorcansmith 0:2a53a4c3238c 248 #define S22 9
lorcansmith 0:2a53a4c3238c 249 #define S23 14
lorcansmith 0:2a53a4c3238c 250 #define S24 20
lorcansmith 0:2a53a4c3238c 251 GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */
lorcansmith 0:2a53a4c3238c 252 GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */
lorcansmith 0:2a53a4c3238c 253 GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */
lorcansmith 0:2a53a4c3238c 254 GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */
lorcansmith 0:2a53a4c3238c 255 GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */
lorcansmith 0:2a53a4c3238c 256 GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */
lorcansmith 0:2a53a4c3238c 257 GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */
lorcansmith 0:2a53a4c3238c 258 GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */
lorcansmith 0:2a53a4c3238c 259 GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */
lorcansmith 0:2a53a4c3238c 260 GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */
lorcansmith 0:2a53a4c3238c 261 GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */
lorcansmith 0:2a53a4c3238c 262 GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */
lorcansmith 0:2a53a4c3238c 263 GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */
lorcansmith 0:2a53a4c3238c 264 GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */
lorcansmith 0:2a53a4c3238c 265 GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */
lorcansmith 0:2a53a4c3238c 266 GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */
lorcansmith 0:2a53a4c3238c 267
lorcansmith 0:2a53a4c3238c 268 /* Round 3 */
lorcansmith 0:2a53a4c3238c 269 #define S31 4
lorcansmith 0:2a53a4c3238c 270 #define S32 11
lorcansmith 0:2a53a4c3238c 271 #define S33 16
lorcansmith 0:2a53a4c3238c 272 #define S34 23
lorcansmith 0:2a53a4c3238c 273 HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */
lorcansmith 0:2a53a4c3238c 274 HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */
lorcansmith 0:2a53a4c3238c 275 HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */
lorcansmith 0:2a53a4c3238c 276 HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */
lorcansmith 0:2a53a4c3238c 277 HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */
lorcansmith 0:2a53a4c3238c 278 HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */
lorcansmith 0:2a53a4c3238c 279 HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */
lorcansmith 0:2a53a4c3238c 280 HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */
lorcansmith 0:2a53a4c3238c 281 HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */
lorcansmith 0:2a53a4c3238c 282 HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */
lorcansmith 0:2a53a4c3238c 283 HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */
lorcansmith 0:2a53a4c3238c 284 HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */
lorcansmith 0:2a53a4c3238c 285 HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */
lorcansmith 0:2a53a4c3238c 286 HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */
lorcansmith 0:2a53a4c3238c 287 HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */
lorcansmith 0:2a53a4c3238c 288 HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */
lorcansmith 0:2a53a4c3238c 289
lorcansmith 0:2a53a4c3238c 290 /* Round 4 */
lorcansmith 0:2a53a4c3238c 291 #define S41 6
lorcansmith 0:2a53a4c3238c 292 #define S42 10
lorcansmith 0:2a53a4c3238c 293 #define S43 15
lorcansmith 0:2a53a4c3238c 294 #define S44 21
lorcansmith 0:2a53a4c3238c 295 II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */
lorcansmith 0:2a53a4c3238c 296 II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */
lorcansmith 0:2a53a4c3238c 297 II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */
lorcansmith 0:2a53a4c3238c 298 II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */
lorcansmith 0:2a53a4c3238c 299 II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */
lorcansmith 0:2a53a4c3238c 300 II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */
lorcansmith 0:2a53a4c3238c 301 II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */
lorcansmith 0:2a53a4c3238c 302 II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */
lorcansmith 0:2a53a4c3238c 303 II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */
lorcansmith 0:2a53a4c3238c 304 II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */
lorcansmith 0:2a53a4c3238c 305 II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */
lorcansmith 0:2a53a4c3238c 306 II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */
lorcansmith 0:2a53a4c3238c 307 II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */
lorcansmith 0:2a53a4c3238c 308 II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */
lorcansmith 0:2a53a4c3238c 309 II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */
lorcansmith 0:2a53a4c3238c 310 II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */
lorcansmith 0:2a53a4c3238c 311
lorcansmith 0:2a53a4c3238c 312 buf[0] += a;
lorcansmith 0:2a53a4c3238c 313 buf[1] += b;
lorcansmith 0:2a53a4c3238c 314 buf[2] += c;
lorcansmith 0:2a53a4c3238c 315 buf[3] += d;
lorcansmith 0:2a53a4c3238c 316 }
lorcansmith 0:2a53a4c3238c 317
lorcansmith 0:2a53a4c3238c 318 #endif /* CHAP_SUPPORT || MD5_SUPPORT */
lorcansmith 0:2a53a4c3238c 319
lorcansmith 0:2a53a4c3238c 320 #endif /* PPP_SUPPORT */