/* $OpenBSD: md4.c,v 1.7 2023/08/10 13:41:56 jsing Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include #include #include #include #include __BEGIN_HIDDEN_DECLS void md4_block_data_order (MD4_CTX *c, const void *p, size_t num); __END_HIDDEN_DECLS #define DATA_ORDER_IS_LITTLE_ENDIAN #define HASH_LONG MD4_LONG #define HASH_CTX MD4_CTX #define HASH_CBLOCK MD4_CBLOCK #define HASH_UPDATE MD4_Update #define HASH_TRANSFORM MD4_Transform #define HASH_FINAL MD4_Final #define HASH_MAKE_STRING(c,s) do { \ unsigned long ll; \ ll=(c)->A; HOST_l2c(ll,(s)); \ ll=(c)->B; HOST_l2c(ll,(s)); \ ll=(c)->C; HOST_l2c(ll,(s)); \ ll=(c)->D; HOST_l2c(ll,(s)); \ } while (0) #define HASH_BLOCK_DATA_ORDER md4_block_data_order #include "md32_common.h" LCRYPTO_ALIAS(MD4_Update); LCRYPTO_ALIAS(MD4_Final); LCRYPTO_ALIAS(MD4_Transform); /* #define F(x,y,z) (((x) & (y)) | ((~(x)) & (z))) #define G(x,y,z) (((x) & (y)) | ((x) & ((z))) | ((y) & ((z)))) */ /* As pointed out by Wei Dai , the above can be * simplified to the code below. Wei attributes these optimizations * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel. */ #define F(b,c,d) ((((c) ^ (d)) & (b)) ^ (d)) #define G(b,c,d) (((b) & (c)) | ((b) & (d)) | ((c) & (d))) #define H(b,c,d) ((b) ^ (c) ^ (d)) #define R0(a,b,c,d,k,s,t) { \ a+=((k)+(t)+F((b),(c),(d))); \ a=ROTATE(a,s); }; #define R1(a,b,c,d,k,s,t) { \ a+=((k)+(t)+G((b),(c),(d))); \ a=ROTATE(a,s); };\ #define R2(a,b,c,d,k,s,t) { \ a+=((k)+(t)+H((b),(c),(d))); \ a=ROTATE(a,s); }; /* Implemented from RFC1186 The MD4 Message-Digest Algorithm */ #define INIT_DATA_A (unsigned long)0x67452301L #define INIT_DATA_B (unsigned long)0xefcdab89L #define INIT_DATA_C (unsigned long)0x98badcfeL #define INIT_DATA_D (unsigned long)0x10325476L int MD4_Init(MD4_CTX *c) { memset (c, 0, sizeof(*c)); c->A = INIT_DATA_A; c->B = INIT_DATA_B; c->C = INIT_DATA_C; c->D = INIT_DATA_D; return 1; } LCRYPTO_ALIAS(MD4_Init); #ifndef md4_block_data_order #ifdef X #undef X #endif void md4_block_data_order(MD4_CTX *c, const void *data_, size_t num) { const unsigned char *data = data_; unsigned int A, B, C, D, l; unsigned int X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15; A = c->A; B = c->B; C = c->C; D = c->D; for (; num--; ) { HOST_c2l(data, l); X0 = l; HOST_c2l(data, l); X1 = l; /* Round 0 */ R0(A, B, C, D, X0, 3, 0); HOST_c2l(data, l); X2 = l; R0(D, A, B, C, X1, 7, 0); HOST_c2l(data, l); X3 = l; R0(C, D, A, B, X2, 11, 0); HOST_c2l(data, l); X4 = l; R0(B, C, D, A, X3, 19, 0); HOST_c2l(data, l); X5 = l; R0(A, B, C, D, X4, 3, 0); HOST_c2l(data, l); X6 = l; R0(D, A, B, C, X5, 7, 0); HOST_c2l(data, l); X7 = l; R0(C, D, A, B, X6, 11, 0); HOST_c2l(data, l); X8 = l; R0(B, C, D, A, X7, 19, 0); HOST_c2l(data, l); X9 = l; R0(A, B, C, D, X8, 3, 0); HOST_c2l(data, l); X10 = l; R0(D, A,B, C,X9, 7, 0); HOST_c2l(data, l); X11 = l; R0(C, D,A, B,X10, 11, 0); HOST_c2l(data, l); X12 = l; R0(B, C,D, A,X11, 19, 0); HOST_c2l(data, l); X13 = l; R0(A, B,C, D,X12, 3, 0); HOST_c2l(data, l); X14 = l; R0(D, A,B, C,X13, 7, 0); HOST_c2l(data, l); X15 = l; R0(C, D,A, B,X14, 11, 0); R0(B, C,D, A,X15, 19, 0); /* Round 1 */ R1(A, B, C, D, X0, 3, 0x5A827999L); R1(D, A, B, C, X4, 5, 0x5A827999L); R1(C, D, A, B, X8, 9, 0x5A827999L); R1(B, C, D, A, X12, 13, 0x5A827999L); R1(A, B, C, D, X1, 3, 0x5A827999L); R1(D, A, B, C, X5, 5, 0x5A827999L); R1(C, D, A, B, X9, 9, 0x5A827999L); R1(B, C, D, A, X13, 13, 0x5A827999L); R1(A, B, C, D, X2, 3, 0x5A827999L); R1(D, A, B, C, X6, 5, 0x5A827999L); R1(C, D, A, B, X10, 9, 0x5A827999L); R1(B, C, D, A, X14, 13, 0x5A827999L); R1(A, B, C, D, X3, 3, 0x5A827999L); R1(D, A, B, C, X7, 5, 0x5A827999L); R1(C, D, A, B, X11, 9, 0x5A827999L); R1(B, C, D, A, X15, 13, 0x5A827999L); /* Round 2 */ R2(A, B, C, D, X0, 3, 0x6ED9EBA1L); R2(D, A, B, C, X8, 9, 0x6ED9EBA1L); R2(C, D, A, B, X4, 11, 0x6ED9EBA1L); R2(B, C, D, A, X12, 15, 0x6ED9EBA1L); R2(A, B, C, D, X2, 3, 0x6ED9EBA1L); R2(D, A, B, C, X10, 9, 0x6ED9EBA1L); R2(C, D, A, B, X6, 11, 0x6ED9EBA1L); R2(B, C, D, A, X14, 15, 0x6ED9EBA1L); R2(A, B, C, D, X1, 3, 0x6ED9EBA1L); R2(D, A, B, C, X9, 9, 0x6ED9EBA1L); R2(C, D, A, B, X5, 11, 0x6ED9EBA1L); R2(B, C, D, A, X13, 15, 0x6ED9EBA1L); R2(A, B, C, D, X3, 3, 0x6ED9EBA1L); R2(D, A, B, C, X11, 9, 0x6ED9EBA1L); R2(C, D, A, B, X7, 11, 0x6ED9EBA1L); R2(B, C, D, A, X15, 15, 0x6ED9EBA1L); A = c->A += A; B = c->B += B; C = c->C += C; D = c->D += D; } } #endif unsigned char * MD4(const unsigned char *d, size_t n, unsigned char *md) { MD4_CTX c; static unsigned char m[MD4_DIGEST_LENGTH]; if (md == NULL) md = m; if (!MD4_Init(&c)) return NULL; MD4_Update(&c, d, n); MD4_Final(md, &c); explicit_bzero(&c, sizeof(c)); return (md); } LCRYPTO_ALIAS(MD4);