Add renegotiation patch from Yuri (ppp-aug10-patch)
Indentation and style cleanups Make md5.c use standard memcpy and memset
This commit is contained in:
fred_nerk
parent
4b16fcbdfd
commit
43d0275f6d
7 changed files with 2628 additions and 2666 deletions
353
md5.c
353
md5.c
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@ -1,7 +1,7 @@
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/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
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*/
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char const *cvs_id_md5 = "$Id: md5.c,v 1.2 2004/06/28 02:43:13 fred_nerk Exp $";
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char const *cvs_id_md5 = "$Id: md5.c,v 1.3 2004/08/13 00:02:50 fred_nerk Exp $";
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/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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rights reserved.
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@ -25,6 +25,7 @@ These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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#include <string.h>
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#include "md5.h"
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/* Constants for MD5Transform routine.
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@ -50,13 +51,11 @@ documentation and/or software.
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static void MD5Transform PROTO_LIST((UINT4[4], unsigned char[64]));
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static void Encode PROTO_LIST((unsigned char *, UINT4 *, unsigned int));
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static void Decode PROTO_LIST((UINT4 *, unsigned char *, unsigned int));
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static void MD5_memcpy PROTO_LIST((POINTER, POINTER, unsigned int));
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static void MD5_memset PROTO_LIST((POINTER, int, unsigned int));
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static unsigned char PADDING[64] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/* F, G, H and I are basic MD5 functions.
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@ -96,256 +95,202 @@ Rotation is separate from addition to prevent recomputation.
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/* MD5 initialization. Begins an MD5 operation, writing a new context.
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*/
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void
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MD5Init(context)
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MD5_CTX *context; /* context */
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void MD5Init(MD5_CTX *context)
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{
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context->count[0] = context->count[1] = 0;
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/* Load magic initialization constants.
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*/
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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context->count[0] = context->count[1] = 0;
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// Load magic initialization constants.
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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}
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/* MD5 block update operation. Continues an MD5 message-digest
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operation, processing another message block, and updating the
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context.
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*/
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void
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MD5Update(context, input, inputLen)
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MD5_CTX *context; /* context */
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unsigned char *input; /* input block */
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unsigned int inputLen; /* length of input block */
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void MD5Update(MD5_CTX *context, unsigned char *input, unsigned int inputLen)
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{
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unsigned int i,
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index,
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partLen;
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unsigned int i,
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index,
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partLen;
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/* Compute number of bytes mod 64 */
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index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
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/* Compute number of bytes mod 64 */
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index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
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/* Update number of bits */
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if ((context->count[0] += ((UINT4) inputLen << 3)) < ((UINT4) inputLen << 3))
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context->count[1]++;
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context->count[1] += ((UINT4) inputLen >> 29);
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/* Update number of bits */
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if ((context->count[0] += ((UINT4) inputLen << 3)) < ((UINT4) inputLen << 3))
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context->count[1]++;
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context->count[1] += ((UINT4) inputLen >> 29);
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partLen = 64 - index;
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partLen = 64 - index;
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/* Transform as many times as possible.
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*/
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if (inputLen >= partLen)
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{
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MD5_memcpy((POINTER) & context->buffer[index], (POINTER) input, partLen);
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MD5Transform(context->state, context->buffer);
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/* Transform as many times as possible.
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*/
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if (inputLen >= partLen)
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{
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memcpy(&context->buffer[index], input, partLen);
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MD5Transform(context->state, context->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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MD5Transform(context->state, &input[i]);
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for (i = partLen; i + 63 < inputLen; i += 64)
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MD5Transform(context->state, &input[i]);
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index = 0;
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}
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else
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i = 0;
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index = 0;
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}
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else
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i = 0;
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/* Buffer remaining input */
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MD5_memcpy((POINTER) & context->buffer[index], (POINTER) & input[i], inputLen - i);
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/* Buffer remaining input */
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memcpy(&context->buffer[index], &input[i], inputLen - i);
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}
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/* MD5 finalization. Ends an MD5 message-digest operation, writing the
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the message digest and zeroizing the context.
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*/
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void
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MD5Final(digest, context)
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unsigned char digest[16]; /* message digest */
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MD5_CTX *context; /* context */
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void MD5Final(unsigned char digest[16], MD5_CTX *context)
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{
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unsigned char bits[8];
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unsigned int index,
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padLen;
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unsigned char bits[8];
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unsigned int index, padLen;
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/* Save number of bits */
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Encode(bits, context->count, 8);
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/* Save number of bits */
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Encode(bits, context->count, 8);
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/* Pad out to 56 mod 64.
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*/
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index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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MD5Update(context, PADDING, padLen);
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/* Pad out to 56 mod 64.
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*/
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index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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MD5Update(context, PADDING, padLen);
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/* Append length (before padding) */
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MD5Update(context, bits, 8);
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/* Append length (before padding) */
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MD5Update(context, bits, 8);
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/* Store state in digest */
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Encode(digest, context->state, 16);
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/* Store state in digest */
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Encode(digest, context->state, 16);
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/* Zeroize sensitive information.
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*/
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MD5_memset((POINTER) context, 0, sizeof(*context));
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/* Zeroize sensitive information.
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*/
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memset(context, 0, sizeof(*context));
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}
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/* MD5 basic transformation. Transforms state based on block.
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*/
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static void
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MD5Transform(state, block)
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UINT4 state[4];
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unsigned char block[64];
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static void MD5Transform(UINT4 state[4], unsigned char block[64])
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{
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UINT4 a = state[0],
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b = state[1],
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c = state[2],
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d = state[3],
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x[16];
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UINT4 a = state[0],
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b = state[1],
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c = state[2],
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d = state[3],
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x[16];
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Decode(x, block, 64);
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Decode(x, block, 64);
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/* Round 1 */
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FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
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FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
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FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
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FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
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FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
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FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
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FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
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FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
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FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
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FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
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FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 1 */
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FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
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FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
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FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
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FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
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FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
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FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
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FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
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FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
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FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
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FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
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FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 2 */
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GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
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GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
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GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
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GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
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GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
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GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
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GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
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GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
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GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
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GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
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GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
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/* Round 2 */
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GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
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GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
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GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
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GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
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GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
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GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
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GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
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GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
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GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
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GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
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GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
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GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
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GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
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GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
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GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
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GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
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GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
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GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
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GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
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GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
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GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
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/* Round 3 */
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HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
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HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
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HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
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HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
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HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
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HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
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HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
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HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
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HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
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HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
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HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
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HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
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HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
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HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
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HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
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HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
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/* Round 3 */
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HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
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HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
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HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
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HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
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HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
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HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
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HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
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HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
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HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
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HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
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HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
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HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
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HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
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HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
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HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
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HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
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/* Round 4 */
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II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
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II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
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II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
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II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
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II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
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II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
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II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
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II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
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II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
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II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
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II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
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II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
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II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
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II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
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II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
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II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
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/* Round 4 */
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II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
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II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
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II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
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II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
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II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
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II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
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II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
|
||||
II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
|
||||
II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
|
||||
II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
|
||||
II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
|
||||
II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
|
||||
II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
|
||||
II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
|
||||
II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
|
||||
II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
|
||||
|
||||
state[0] += a;
|
||||
state[1] += b;
|
||||
state[2] += c;
|
||||
state[3] += d;
|
||||
state[0] += a;
|
||||
state[1] += b;
|
||||
state[2] += c;
|
||||
state[3] += d;
|
||||
|
||||
/* Zeroize sensitive information.
|
||||
|
||||
*/
|
||||
MD5_memset((POINTER) x, 0, sizeof(x));
|
||||
// Zeroize sensitive information.
|
||||
memset(x, 0, sizeof(x));
|
||||
}
|
||||
|
||||
/* Encodes input (UINT4) into output (unsigned char). Assumes len is
|
||||
a multiple of 4.
|
||||
*/
|
||||
static void
|
||||
Encode(output, input, len)
|
||||
unsigned char *output;
|
||||
UINT4 *input;
|
||||
unsigned int len;
|
||||
static void Encode(unsigned char *output, UINT4 *input, unsigned int len)
|
||||
{
|
||||
unsigned int i,
|
||||
j;
|
||||
unsigned int i, j;
|
||||
|
||||
for (i = 0, j = 0; j < len; i++, j += 4)
|
||||
{
|
||||
output[j] = (unsigned char) (input[i] & 0xff);
|
||||
output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
|
||||
output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
|
||||
output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
|
||||
}
|
||||
for (i = 0, j = 0; j < len; i++, j += 4)
|
||||
{
|
||||
output[j] = (unsigned char) (input[i] & 0xff);
|
||||
output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
|
||||
output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
|
||||
output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
|
||||
}
|
||||
}
|
||||
|
||||
/* Decodes input (unsigned char) into output (UINT4). Assumes len is
|
||||
a multiple of 4.
|
||||
*/
|
||||
static void
|
||||
Decode(output, input, len)
|
||||
UINT4 *output;
|
||||
unsigned char *input;
|
||||
unsigned int len;
|
||||
static void Decode(UINT4 *output, unsigned char *input, unsigned int len)
|
||||
{
|
||||
unsigned int i,
|
||||
j;
|
||||
unsigned int i, j;
|
||||
|
||||
for (i = 0, j = 0; j < len; i++, j += 4)
|
||||
output[i] = ((UINT4) input[j]) | (((UINT4) input[j + 1]) << 8) | (((UINT4) input[j + 2]) << 16) | (((UINT4) input[j + 3]) << 24);
|
||||
for (i = 0, j = 0; j < len; i++, j += 4)
|
||||
output[i] = ((UINT4) input[j]) | (((UINT4) input[j + 1]) << 8) | (((UINT4) input[j + 2]) << 16) | (((UINT4) input[j + 3]) << 24);
|
||||
}
|
||||
|
||||
/* Note: Replace "for loop" with standard memcpy if possible.
|
||||
*/
|
||||
|
||||
static void
|
||||
MD5_memcpy(output, input, len)
|
||||
POINTER output;
|
||||
POINTER input;
|
||||
unsigned int len;
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
|
||||
output[i] = input[i];
|
||||
}
|
||||
|
||||
/* Note: Replace "for loop" with standard memset if possible.
|
||||
*/
|
||||
static void
|
||||
MD5_memset(output, value, len)
|
||||
POINTER output;
|
||||
int value;
|
||||
unsigned int len;
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
((char *) output)[i] = (char) value;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue