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authorRene Mayrhofer <rene@mayrhofer.eu.org>2008-07-10 12:47:56 +0000
committerRene Mayrhofer <rene@mayrhofer.eu.org>2008-07-10 12:47:56 +0000
commiteb841c5ef668a48782ef1154fda65cb6048f5885 (patch)
tree00dd0cb4313bf2291d94ed511fe51f0b4bc7ea7a /src/libstrongswan/crypto/hashers/md5_hasher.c
parent738206039047924ae7e4762a53d121be1ca43000 (diff)
downloadvyos-strongswan-eb841c5ef668a48782ef1154fda65cb6048f5885.tar.gz
vyos-strongswan-eb841c5ef668a48782ef1154fda65cb6048f5885.zip
- Updated to new upstream.
Diffstat (limited to 'src/libstrongswan/crypto/hashers/md5_hasher.c')
-rw-r--r--src/libstrongswan/crypto/hashers/md5_hasher.c405
1 files changed, 0 insertions, 405 deletions
diff --git a/src/libstrongswan/crypto/hashers/md5_hasher.c b/src/libstrongswan/crypto/hashers/md5_hasher.c
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--- a/src/libstrongswan/crypto/hashers/md5_hasher.c
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@@ -1,405 +0,0 @@
-/**
- * @file md5_hasher.c
- *
- * @brief Implementation of md5_hasher_t.
- *
- */
-
-/*
- * Copyright (C) 2005-2006 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- * Copyright (C) 1991-1992, RSA Data Security, Inc. Created 1991.
- * All rights reserved.
- *
- * Derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm.
- * Ported to fulfill hasher_t interface.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- */
-
-#include <string.h>
-
-#include "md5_hasher.h"
-
-
-/* Constants for MD5Transform routine. */
-#define S11 7
-#define S12 12
-#define S13 17
-#define S14 22
-#define S21 5
-#define S22 9
-#define S23 14
-#define S24 20
-#define S31 4
-#define S32 11
-#define S33 16
-#define S34 23
-#define S41 6
-#define S42 10
-#define S43 15
-#define S44 21
-
-static u_int8_t PADDING[64] = {
- 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
-};
-
-/*
- * ugly macro stuff
- */
-/* F, G, H and I are basic MD5 functions.
- */
-#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
-#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
-#define H(x, y, z) ((x) ^ (y) ^ (z))
-#define I(x, y, z) ((y) ^ ((x) | (~z)))
-
-/* ROTATE_LEFT rotates x left n bits.
- */
-#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
-
-/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
-Rotation is separate from addition to prevent recomputation.
- */
-#define FF(a, b, c, d, x, s, ac) { \
- (a) += F ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
-#define GG(a, b, c, d, x, s, ac) { \
- (a) += G ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
-#define HH(a, b, c, d, x, s, ac) { \
- (a) += H ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
-#define II(a, b, c, d, x, s, ac) { \
- (a) += I ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
-
-
-
-typedef struct private_md5_hasher_t private_md5_hasher_t;
-
-/**
- * Private data structure with hasing context.
- */
-struct private_md5_hasher_t {
- /**
- * Public interface for this hasher.
- */
- md5_hasher_t public;
-
- /*
- * State of the hasher.
- */
- u_int32_t state[5];
- u_int32_t count[2];
- u_int8_t buffer[64];
-};
-
-
-#if BYTE_ORDER != LITTLE_ENDIAN
-
-/* Encodes input (u_int32_t) into output (u_int8_t). Assumes len is
- * a multiple of 4.
- */
-static void Encode (u_int8_t *output, u_int32_t *input, size_t len)
-{
- size_t i, j;
-
- for (i = 0, j = 0; j < len; i++, j += 4)
- {
- output[j] = (u_int8_t)(input[i] & 0xff);
- output[j+1] = (u_int8_t)((input[i] >> 8) & 0xff);
- output[j+2] = (u_int8_t)((input[i] >> 16) & 0xff);
- output[j+3] = (u_int8_t)((input[i] >> 24) & 0xff);
- }
-}
-
-/* Decodes input (u_int8_t) into output (u_int32_t). Assumes len is
- * a multiple of 4.
- */
-static void Decode(u_int32_t *output, u_int8_t *input, size_t len)
-{
- size_t i, j;
-
- for (i = 0, j = 0; j < len; i++, j += 4)
- {
- output[i] = ((u_int32_t)input[j]) | (((u_int32_t)input[j+1]) << 8) |
- (((u_int32_t)input[j+2]) << 16) | (((u_int32_t)input[j+3]) << 24);
- }
-}
-
-#elif BYTE_ORDER == LITTLE_ENDIAN
- #define Encode memcpy
- #define Decode memcpy
-#endif
-
-/* MD5 basic transformation. Transforms state based on block.
- */
-static void MD5Transform(u_int32_t state[4], u_int8_t block[64])
-{
- u_int32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
-
- Decode(x, block, 64);
-
- /* Round 1 */
- FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
- FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
- FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
- FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
- FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
- FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
- FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
- FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
- FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
- FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
- FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
- FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
- FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
- FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
- FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
- FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
-
- /* Round 2 */
- GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
- GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
- GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
- GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
- GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
- GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
- GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
- GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
- GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
- GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
- GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
- GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
- GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
- GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
- GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
- GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
-
- /* Round 3 */
- HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
- HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
- HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
- HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
- HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
- HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
- HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
- HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
- HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
- HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
- HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
- HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
- HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
- HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
- HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
- HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
-
- /* Round 4 */
- II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
- II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
- II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
- II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
- II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
- II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
- 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;
-}
-
-/* MD5 block update operation. Continues an MD5 message-digest
- * operation, processing another message block, and updating the
- * context.
- */
-static void MD5Update(private_md5_hasher_t *this, u_int8_t *input, size_t inputLen)
-{
- u_int32_t i;
- size_t index, partLen;
-
- /* Compute number of bytes mod 64 */
- index = (u_int8_t)((this->count[0] >> 3) & 0x3F);
-
- /* Update number of bits */
- if ((this->count[0] += (inputLen << 3)) < (inputLen << 3))
- {
- this->count[1]++;
- }
- this->count[1] += (inputLen >> 29);
-
- partLen = 64 - index;
-
- /* Transform as many times as possible. */
- if (inputLen >= partLen)
- {
- memcpy(&this->buffer[index], input, partLen);
- MD5Transform (this->state, this->buffer);
-
- for (i = partLen; i + 63 < inputLen; i += 64)
- {
- MD5Transform (this->state, &input[i]);
- }
- index = 0;
- }
- else
- {
- i = 0;
- }
-
- /* Buffer remaining input */
- memcpy(&this->buffer[index], &input[i], inputLen-i);
-}
-
-/* MD5 finalization. Ends an MD5 message-digest operation, writing the
- * the message digest and zeroizing the context.
- */
-static void MD5Final (private_md5_hasher_t *this, u_int8_t digest[16])
-{
- u_int8_t bits[8];
- size_t index, padLen;
-
- /* Save number of bits */
- Encode (bits, this->count, 8);
-
- /* Pad out to 56 mod 64. */
- index = (size_t)((this->count[0] >> 3) & 0x3f);
- padLen = (index < 56) ? (56 - index) : (120 - index);
- MD5Update (this, PADDING, padLen);
-
- /* Append length (before padding) */
- MD5Update (this, bits, 8);
-
- if (digest != NULL) /* Bill Simpson's padding */
- {
- /* store state in digest */
- Encode (digest, this->state, 16);
- }
-}
-
-
-
-/**
- * Implementation of hasher_t.get_hash.
- */
-static void get_hash(private_md5_hasher_t *this, chunk_t chunk, u_int8_t *buffer)
-{
- MD5Update(this, chunk.ptr, chunk.len);
- if (buffer != NULL)
- {
- MD5Final(this, buffer);
- this->public.hasher_interface.reset(&(this->public.hasher_interface));
- }
-}
-
-
-/**
- * Implementation of hasher_t.allocate_hash.
- */
-static void allocate_hash(private_md5_hasher_t *this, chunk_t chunk, chunk_t *hash)
-{
- chunk_t allocated_hash;
-
- MD5Update(this, chunk.ptr, chunk.len);
- if (hash != NULL)
- {
- allocated_hash.ptr = malloc(HASH_SIZE_MD5);
- allocated_hash.len = HASH_SIZE_MD5;
-
- MD5Final(this, allocated_hash.ptr);
- this->public.hasher_interface.reset(&(this->public.hasher_interface));
-
- *hash = allocated_hash;
- }
-}
-
-/**
- * Implementation of hasher_t.get_hash_size.
- */
-static size_t get_hash_size(private_md5_hasher_t *this)
-{
- return HASH_SIZE_MD5;
-}
-
-/**
- * Implementation of hasher_t.reset.
- */
-static void reset(private_md5_hasher_t *this)
-{
- this->state[0] = 0x67452301;
- this->state[1] = 0xefcdab89;
- this->state[2] = 0x98badcfe;
- this->state[3] = 0x10325476;
- this->count[0] = 0;
- this->count[1] = 0;
-}
-
-/**
- * Implementation of hasher_t.get_state
- */
-static chunk_t get_state(private_md5_hasher_t *this)
-{
- chunk_t chunk;
-
- chunk.ptr = (u_char*)&this->state[0];
- chunk.len = sizeof(this->state);
-
- return chunk;
-}
-
-/**
- * Implementation of hasher_t.destroy.
- */
-static void destroy(private_md5_hasher_t *this)
-{
- free(this);
-}
-
-/*
- * Described in header.
- */
-md5_hasher_t *md5_hasher_create(void)
-{
- private_md5_hasher_t *this = malloc_thing(private_md5_hasher_t);
-
- this->public.hasher_interface.get_hash = (void (*) (hasher_t*, chunk_t, u_int8_t*))get_hash;
- this->public.hasher_interface.allocate_hash = (void (*) (hasher_t*, chunk_t, chunk_t*))allocate_hash;
- this->public.hasher_interface.get_hash_size = (size_t (*) (hasher_t*))get_hash_size;
- this->public.hasher_interface.reset = (void (*) (hasher_t*))reset;
- this->public.hasher_interface.get_state = (chunk_t (*) (hasher_t*))get_state;
- this->public.hasher_interface.destroy = (void (*) (hasher_t*))destroy;
-
- /* initialize */
- reset(this);
-
- return &(this->public);
-}