| 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdlib.h>
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| 11 | #include <string.h>
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| 12 | #include <openssl/opensslconf.h>
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| 13 | #include <openssl/md4.h>
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| 14 |
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| 15 | void md4_block_data_order(MD4_CTX *c, const void *p, size_t num);
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| 16 |
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| 17 | #define DATA_ORDER_IS_LITTLE_ENDIAN
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| 18 |
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| 19 | #define HASH_LONG MD4_LONG
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| 20 | #define HASH_CTX MD4_CTX
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| 21 | #define HASH_CBLOCK MD4_CBLOCK
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| 22 | #define HASH_UPDATE MD4_Update
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| 23 | #define HASH_TRANSFORM MD4_Transform
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| 24 | #define HASH_FINAL MD4_Final
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| 25 | #define HASH_MAKE_STRING(c,s) do { \
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| 26 | unsigned long ll; \
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| 27 | ll=(c)->A; (void)HOST_l2c(ll,(s)); \
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| 28 | ll=(c)->B; (void)HOST_l2c(ll,(s)); \
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| 29 | ll=(c)->C; (void)HOST_l2c(ll,(s)); \
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| 30 | ll=(c)->D; (void)HOST_l2c(ll,(s)); \
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| 31 | } while (0)
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| 32 | #define HASH_BLOCK_DATA_ORDER md4_block_data_order
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| 33 |
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| 34 | #include "crypto/md32_common.h"
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| 35 |
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| 36 | /*-
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| 37 | #define F(x,y,z) (((x) & (y)) | ((~(x)) & (z)))
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| 38 | #define G(x,y,z) (((x) & (y)) | ((x) & ((z))) | ((y) & ((z))))
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| 39 | */
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| 40 |
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| 41 | /*
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| 42 | * As pointed out by Wei Dai, the above can be simplified to the code
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| 43 | * below. Wei attributes these optimizations to Peter Gutmann's SHS code,
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| 44 | * and he attributes it to Rich Schroeppel.
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| 45 | */
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| 46 | #define F(b,c,d) ((((c) ^ (d)) & (b)) ^ (d))
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| 47 | #define G(b,c,d) (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
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| 48 | #define H(b,c,d) ((b) ^ (c) ^ (d))
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| 49 |
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| 50 | #define R0(a,b,c,d,k,s,t) { \
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| 51 | a+=((k)+(t)+F((b),(c),(d))); \
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| 52 | a=ROTATE(a,s); };
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| 53 |
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| 54 | #define R1(a,b,c,d,k,s,t) { \
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| 55 | a+=((k)+(t)+G((b),(c),(d))); \
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| 56 | a=ROTATE(a,s); };
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| 57 |
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| 58 | #define R2(a,b,c,d,k,s,t) { \
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| 59 | a+=((k)+(t)+H((b),(c),(d))); \
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| 60 | a=ROTATE(a,s); };
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