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lwip/netif/ppp/md5.c@0:632c9925f013, 2010-06-11 (annotated)

Committer:: donatien
Date:: Fri Jun 11 16:05:15 2010 +0000
Revision:: 0:632c9925f013
Child:: 4:fd826cad83c0

Who changed what in which revision?

User	Revision	Line number	New contents of line
donatien	0:632c9925f013	1	/*
donatien	0:632c9925f013	2	***********************************************************************
donatien	0:632c9925f013	3	md5.c -- the source code for MD5 routines
donatien	0:632c9925f013	4	RSA Data Security, Inc. MD5 Message-Digest Algorithm
donatien	0:632c9925f013	5	Created: 2/17/90 RLR
donatien	0:632c9925f013	6	Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr.
donatien	0:632c9925f013	7	***********************************************************************
donatien	0:632c9925f013	8	*/
donatien	0:632c9925f013	9
donatien	0:632c9925f013	10	/*
donatien	0:632c9925f013	11	***********************************************************************
donatien	0:632c9925f013	12	Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.
donatien	0:632c9925f013	13
donatien	0:632c9925f013	14	License to copy and use this software is granted provided that
donatien	0:632c9925f013	15	it is identified as the "RSA Data Security, Inc. MD5 Message-
donatien	0:632c9925f013	16	Digest Algorithm" in all material mentioning or referencing this
donatien	0:632c9925f013	17	software or this function.
donatien	0:632c9925f013	18
donatien	0:632c9925f013	19	License is also granted to make and use derivative works
donatien	0:632c9925f013	20	provided that such works are identified as "derived from the RSA
donatien	0:632c9925f013	21	Data Security, Inc. MD5 Message-Digest Algorithm" in all
donatien	0:632c9925f013	22	material mentioning or referencing the derived work.
donatien	0:632c9925f013	23
donatien	0:632c9925f013	24	RSA Data Security, Inc. makes no representations concerning
donatien	0:632c9925f013	25	either the merchantability of this software or the suitability
donatien	0:632c9925f013	26	of this software for any particular purpose. It is provided "as
donatien	0:632c9925f013	27	is" without express or implied warranty of any kind.
donatien	0:632c9925f013	28
donatien	0:632c9925f013	29	These notices must be retained in any copies of any part of this
donatien	0:632c9925f013	30	documentation and/or software.
donatien	0:632c9925f013	31	***********************************************************************
donatien	0:632c9925f013	32	*/
donatien	0:632c9925f013	33
donatien	0:632c9925f013	34	#include "lwip/opt.h"
donatien	0:632c9925f013	35
donatien	0:632c9925f013	36	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
donatien	0:632c9925f013	37
donatien	0:632c9925f013	38	#if CHAP_SUPPORT \|\| MD5_SUPPORT
donatien	0:632c9925f013	39
donatien	0:632c9925f013	40	#include "ppp.h"
donatien	0:632c9925f013	41	#include "pppdebug.h"
donatien	0:632c9925f013	42
donatien	0:632c9925f013	43	#include "md5.h"
donatien	0:632c9925f013	44
donatien	0:632c9925f013	45	#include <string.h>
donatien	0:632c9925f013	46
donatien	0:632c9925f013	47	/*
donatien	0:632c9925f013	48	***********************************************************************
donatien	0:632c9925f013	49	Message-digest routines:
donatien	0:632c9925f013	50	To form the message digest for a message M
donatien	0:632c9925f013	51	(1) Initialize a context buffer mdContext using MD5Init
donatien	0:632c9925f013	52	(2) Call MD5Update on mdContext and M
donatien	0:632c9925f013	53	(3) Call MD5Final on mdContext
donatien	0:632c9925f013	54	The message digest is now in mdContext->digest[0...15]
donatien	0:632c9925f013	55	***********************************************************************
donatien	0:632c9925f013	56	*/
donatien	0:632c9925f013	57
donatien	0:632c9925f013	58	/* forward declaration */
donatien	0:632c9925f013	59	static void Transform (u32_t buf, u32_t in);
donatien	0:632c9925f013	60
donatien	0:632c9925f013	61	static unsigned char PADDING[64] = {
donatien	0:632c9925f013	62	0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
donatien	0:632c9925f013	63	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
donatien	0:632c9925f013	64	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
donatien	0:632c9925f013	65	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
donatien	0:632c9925f013	66	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
donatien	0:632c9925f013	67	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
donatien	0:632c9925f013	68	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
donatien	0:632c9925f013	69	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
donatien	0:632c9925f013	70	};
donatien	0:632c9925f013	71
donatien	0:632c9925f013	72	/* F, G, H and I are basic MD5 functions */
donatien	0:632c9925f013	73	#define F(x, y, z) (((x) & (y)) \| ((~x) & (z)))
donatien	0:632c9925f013	74	#define G(x, y, z) (((x) & (z)) \| ((y) & (~z)))
donatien	0:632c9925f013	75	#define H(x, y, z) ((x) ^ (y) ^ (z))
donatien	0:632c9925f013	76	#define I(x, y, z) ((y) ^ ((x) \| (~z)))
donatien	0:632c9925f013	77
donatien	0:632c9925f013	78	/* ROTATE_LEFT rotates x left n bits */
donatien	0:632c9925f013	79	#define ROTATE_LEFT(x, n) (((x) << (n)) \| ((x) >> (32-(n))))
donatien	0:632c9925f013	80
donatien	0:632c9925f013	81	/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
donatien	0:632c9925f013	82	/* Rotation is separate from addition to prevent recomputation */
donatien	0:632c9925f013	83	#define FF(a, b, c, d, x, s, ac) \
donatien	0:632c9925f013	84	{(a) += F ((b), (c), (d)) + (x) + (u32_t)(ac); \
donatien	0:632c9925f013	85	(a) = ROTATE_LEFT ((a), (s)); \
donatien	0:632c9925f013	86	(a) += (b); \
donatien	0:632c9925f013	87	}
donatien	0:632c9925f013	88	#define GG(a, b, c, d, x, s, ac) \
donatien	0:632c9925f013	89	{(a) += G ((b), (c), (d)) + (x) + (u32_t)(ac); \
donatien	0:632c9925f013	90	(a) = ROTATE_LEFT ((a), (s)); \
donatien	0:632c9925f013	91	(a) += (b); \
donatien	0:632c9925f013	92	}
donatien	0:632c9925f013	93	#define HH(a, b, c, d, x, s, ac) \
donatien	0:632c9925f013	94	{(a) += H ((b), (c), (d)) + (x) + (u32_t)(ac); \
donatien	0:632c9925f013	95	(a) = ROTATE_LEFT ((a), (s)); \
donatien	0:632c9925f013	96	(a) += (b); \
donatien	0:632c9925f013	97	}
donatien	0:632c9925f013	98	#define II(a, b, c, d, x, s, ac) \
donatien	0:632c9925f013	99	{(a) += I ((b), (c), (d)) + (x) + (u32_t)(ac); \
donatien	0:632c9925f013	100	(a) = ROTATE_LEFT ((a), (s)); \
donatien	0:632c9925f013	101	(a) += (b); \
donatien	0:632c9925f013	102	}
donatien	0:632c9925f013	103
donatien	0:632c9925f013	104	#ifdef __STDC__
donatien	0:632c9925f013	105	#define UL(x) x##UL
donatien	0:632c9925f013	106	#else
donatien	0:632c9925f013	107	#ifdef WIN32
donatien	0:632c9925f013	108	#define UL(x) x##UL
donatien	0:632c9925f013	109	#else
donatien	0:632c9925f013	110	#define UL(x) x
donatien	0:632c9925f013	111	#endif
donatien	0:632c9925f013	112	#endif
donatien	0:632c9925f013	113
donatien	0:632c9925f013	114	/* The routine MD5Init initializes the message-digest context
donatien	0:632c9925f013	115	mdContext. All fields are set to zero.
donatien	0:632c9925f013	116	*/
donatien	0:632c9925f013	117	void
donatien	0:632c9925f013	118	MD5Init (MD5_CTX *mdContext)
donatien	0:632c9925f013	119	{
donatien	0:632c9925f013	120	mdContext->i[0] = mdContext->i[1] = (u32_t)0;
donatien	0:632c9925f013	121
donatien	0:632c9925f013	122	/* Load magic initialization constants. */
donatien	0:632c9925f013	123	mdContext->buf[0] = (u32_t)0x67452301UL;
donatien	0:632c9925f013	124	mdContext->buf[1] = (u32_t)0xefcdab89UL;
donatien	0:632c9925f013	125	mdContext->buf[2] = (u32_t)0x98badcfeUL;
donatien	0:632c9925f013	126	mdContext->buf[3] = (u32_t)0x10325476UL;
donatien	0:632c9925f013	127	}
donatien	0:632c9925f013	128
donatien	0:632c9925f013	129	/* The routine MD5Update updates the message-digest context to
donatien	0:632c9925f013	130	account for the presence of each of the characters inBuf[0..inLen-1]
donatien	0:632c9925f013	131	in the message whose digest is being computed.
donatien	0:632c9925f013	132	*/
donatien	0:632c9925f013	133	void
donatien	0:632c9925f013	134	MD5Update(MD5_CTX mdContext, unsigned char inBuf, unsigned int inLen)
donatien	0:632c9925f013	135	{
donatien	0:632c9925f013	136	u32_t in[16];
donatien	0:632c9925f013	137	int mdi;
donatien	0:632c9925f013	138	unsigned int i, ii;
donatien	0:632c9925f013	139
donatien	0:632c9925f013	140	#if 0
donatien	0:632c9925f013	141	PPPDEBUGLOG_INFO, ("MD5Update: %u:%.H\n", inLen, MIN(inLen, 20) 2, inBuf);
donatien	0:632c9925f013	142	PPPDEBUGLOG_INFO, ("MD5Update: %u:%s\n", inLen, inBuf);
donatien	0:632c9925f013	143	#endif
donatien	0:632c9925f013	144
donatien	0:632c9925f013	145	/* compute number of bytes mod 64 */
donatien	0:632c9925f013	146	mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
donatien	0:632c9925f013	147
donatien	0:632c9925f013	148	/* update number of bits */
donatien	0:632c9925f013	149	if ((mdContext->i[0] + ((u32_t)inLen << 3)) < mdContext->i[0]) {
donatien	0:632c9925f013	150	mdContext->i[1]++;
donatien	0:632c9925f013	151	}
donatien	0:632c9925f013	152	mdContext->i[0] += ((u32_t)inLen << 3);
donatien	0:632c9925f013	153	mdContext->i[1] += ((u32_t)inLen >> 29);
donatien	0:632c9925f013	154
donatien	0:632c9925f013	155	while (inLen--) {
donatien	0:632c9925f013	156	/* add new character to buffer, increment mdi */
donatien	0:632c9925f013	157	mdContext->in[mdi++] = *inBuf++;
donatien	0:632c9925f013	158
donatien	0:632c9925f013	159	/* transform if necessary */
donatien	0:632c9925f013	160	if (mdi == 0x40) {
donatien	0:632c9925f013	161	for (i = 0, ii = 0; i < 16; i++, ii += 4) {
donatien	0:632c9925f013	162	in[i] = (((u32_t)mdContext->in[ii+3]) << 24) \|
donatien	0:632c9925f013	163	(((u32_t)mdContext->in[ii+2]) << 16) \|
donatien	0:632c9925f013	164	(((u32_t)mdContext->in[ii+1]) << 8) \|
donatien	0:632c9925f013	165	((u32_t)mdContext->in[ii]);
donatien	0:632c9925f013	166	}
donatien	0:632c9925f013	167	Transform (mdContext->buf, in);
donatien	0:632c9925f013	168	mdi = 0;
donatien	0:632c9925f013	169	}
donatien	0:632c9925f013	170	}
donatien	0:632c9925f013	171	}
donatien	0:632c9925f013	172
donatien	0:632c9925f013	173	/* The routine MD5Final terminates the message-digest computation and
donatien	0:632c9925f013	174	ends with the desired message digest in mdContext->digest[0...15].
donatien	0:632c9925f013	175	*/
donatien	0:632c9925f013	176	void
donatien	0:632c9925f013	177	MD5Final (unsigned char hash[], MD5_CTX *mdContext)
donatien	0:632c9925f013	178	{
donatien	0:632c9925f013	179	u32_t in[16];
donatien	0:632c9925f013	180	int mdi;
donatien	0:632c9925f013	181	unsigned int i, ii;
donatien	0:632c9925f013	182	unsigned int padLen;
donatien	0:632c9925f013	183
donatien	0:632c9925f013	184	/* save number of bits */
donatien	0:632c9925f013	185	in[14] = mdContext->i[0];
donatien	0:632c9925f013	186	in[15] = mdContext->i[1];
donatien	0:632c9925f013	187
donatien	0:632c9925f013	188	/* compute number of bytes mod 64 */
donatien	0:632c9925f013	189	mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
donatien	0:632c9925f013	190
donatien	0:632c9925f013	191	/* pad out to 56 mod 64 */
donatien	0:632c9925f013	192	padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
donatien	0:632c9925f013	193	MD5Update (mdContext, PADDING, padLen);
donatien	0:632c9925f013	194
donatien	0:632c9925f013	195	/* append length in bits and transform */
donatien	0:632c9925f013	196	for (i = 0, ii = 0; i < 14; i++, ii += 4) {
donatien	0:632c9925f013	197	in[i] = (((u32_t)mdContext->in[ii+3]) << 24) \|
donatien	0:632c9925f013	198	(((u32_t)mdContext->in[ii+2]) << 16) \|
donatien	0:632c9925f013	199	(((u32_t)mdContext->in[ii+1]) << 8) \|
donatien	0:632c9925f013	200	((u32_t)mdContext->in[ii]);
donatien	0:632c9925f013	201	}
donatien	0:632c9925f013	202	Transform (mdContext->buf, in);
donatien	0:632c9925f013	203
donatien	0:632c9925f013	204	/* store buffer in digest */
donatien	0:632c9925f013	205	for (i = 0, ii = 0; i < 4; i++, ii += 4) {
donatien	0:632c9925f013	206	mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF);
donatien	0:632c9925f013	207	mdContext->digest[ii+1] =
donatien	0:632c9925f013	208	(unsigned char)((mdContext->buf[i] >> 8) & 0xFF);
donatien	0:632c9925f013	209	mdContext->digest[ii+2] =
donatien	0:632c9925f013	210	(unsigned char)((mdContext->buf[i] >> 16) & 0xFF);
donatien	0:632c9925f013	211	mdContext->digest[ii+3] =
donatien	0:632c9925f013	212	(unsigned char)((mdContext->buf[i] >> 24) & 0xFF);
donatien	0:632c9925f013	213	}
donatien	0:632c9925f013	214	SMEMCPY(hash, mdContext->digest, 16);
donatien	0:632c9925f013	215	}
donatien	0:632c9925f013	216
donatien	0:632c9925f013	217	/* Basic MD5 step. Transforms buf based on in.
donatien	0:632c9925f013	218	*/
donatien	0:632c9925f013	219	static void
donatien	0:632c9925f013	220	Transform (u32_t buf, u32_t in)
donatien	0:632c9925f013	221	{
donatien	0:632c9925f013	222	u32_t a = buf[0], b = buf[1], c = buf[2], d = buf[3];
donatien	0:632c9925f013	223
donatien	0:632c9925f013	224	/* Round 1 */
donatien	0:632c9925f013	225	#define S11 7
donatien	0:632c9925f013	226	#define S12 12
donatien	0:632c9925f013	227	#define S13 17
donatien	0:632c9925f013	228	#define S14 22
donatien	0:632c9925f013	229	FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */
donatien	0:632c9925f013	230	FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */
donatien	0:632c9925f013	231	FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */
donatien	0:632c9925f013	232	FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */
donatien	0:632c9925f013	233	FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */
donatien	0:632c9925f013	234	FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */
donatien	0:632c9925f013	235	FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */
donatien	0:632c9925f013	236	FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */
donatien	0:632c9925f013	237	FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */
donatien	0:632c9925f013	238	FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */
donatien	0:632c9925f013	239	FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */
donatien	0:632c9925f013	240	FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */
donatien	0:632c9925f013	241	FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */
donatien	0:632c9925f013	242	FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */
donatien	0:632c9925f013	243	FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */
donatien	0:632c9925f013	244	FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */
donatien	0:632c9925f013	245
donatien	0:632c9925f013	246	/* Round 2 */
donatien	0:632c9925f013	247	#define S21 5
donatien	0:632c9925f013	248	#define S22 9
donatien	0:632c9925f013	249	#define S23 14
donatien	0:632c9925f013	250	#define S24 20
donatien	0:632c9925f013	251	GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */
donatien	0:632c9925f013	252	GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */
donatien	0:632c9925f013	253	GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */
donatien	0:632c9925f013	254	GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */
donatien	0:632c9925f013	255	GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */
donatien	0:632c9925f013	256	GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */
donatien	0:632c9925f013	257	GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */
donatien	0:632c9925f013	258	GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */
donatien	0:632c9925f013	259	GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */
donatien	0:632c9925f013	260	GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */
donatien	0:632c9925f013	261	GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */
donatien	0:632c9925f013	262	GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */
donatien	0:632c9925f013	263	GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */
donatien	0:632c9925f013	264	GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */
donatien	0:632c9925f013	265	GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */
donatien	0:632c9925f013	266	GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */
donatien	0:632c9925f013	267
donatien	0:632c9925f013	268	/* Round 3 */
donatien	0:632c9925f013	269	#define S31 4
donatien	0:632c9925f013	270	#define S32 11
donatien	0:632c9925f013	271	#define S33 16
donatien	0:632c9925f013	272	#define S34 23
donatien	0:632c9925f013	273	HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */
donatien	0:632c9925f013	274	HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */
donatien	0:632c9925f013	275	HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */
donatien	0:632c9925f013	276	HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */
donatien	0:632c9925f013	277	HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */
donatien	0:632c9925f013	278	HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */
donatien	0:632c9925f013	279	HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */
donatien	0:632c9925f013	280	HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */
donatien	0:632c9925f013	281	HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */
donatien	0:632c9925f013	282	HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */
donatien	0:632c9925f013	283	HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */
donatien	0:632c9925f013	284	HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */
donatien	0:632c9925f013	285	HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */
donatien	0:632c9925f013	286	HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */
donatien	0:632c9925f013	287	HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */
donatien	0:632c9925f013	288	HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */
donatien	0:632c9925f013	289
donatien	0:632c9925f013	290	/* Round 4 */
donatien	0:632c9925f013	291	#define S41 6
donatien	0:632c9925f013	292	#define S42 10
donatien	0:632c9925f013	293	#define S43 15
donatien	0:632c9925f013	294	#define S44 21
donatien	0:632c9925f013	295	II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */
donatien	0:632c9925f013	296	II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */
donatien	0:632c9925f013	297	II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */
donatien	0:632c9925f013	298	II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */
donatien	0:632c9925f013	299	II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */
donatien	0:632c9925f013	300	II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */
donatien	0:632c9925f013	301	II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */
donatien	0:632c9925f013	302	II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */
donatien	0:632c9925f013	303	II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */
donatien	0:632c9925f013	304	II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */
donatien	0:632c9925f013	305	II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */
donatien	0:632c9925f013	306	II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */
donatien	0:632c9925f013	307	II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */
donatien	0:632c9925f013	308	II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */
donatien	0:632c9925f013	309	II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */
donatien	0:632c9925f013	310	II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */
donatien	0:632c9925f013	311
donatien	0:632c9925f013	312	buf[0] += a;
donatien	0:632c9925f013	313	buf[1] += b;
donatien	0:632c9925f013	314	buf[2] += c;
donatien	0:632c9925f013	315	buf[3] += d;
donatien	0:632c9925f013	316	}
donatien	0:632c9925f013	317
donatien	0:632c9925f013	318	#endif /* CHAP_SUPPORT \|\| MD5_SUPPORT */
donatien	0:632c9925f013	319
donatien	0:632c9925f013	320	#endif /* PPP_SUPPORT */

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Type:	Program
Created:	11 Jun 2010
Imports:	2654
Forks:	0
Commits:	12
Dependents:	3
Dependencies:	0
Followers:	13

This repository is Public (Unlisted).

lwip/netif/ppp/md5.c@0:632c9925f013, 2010-06-11 (annotated)

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