1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. 2 * 3 * This package is an SSL implementation written 4 * by Eric Young (eay@cryptsoft.com). 5 * The implementation was written so as to conform with Netscapes SSL. 6 * 7 * This library is free for commercial and non-commercial use as long as 8 * the following conditions are aheared to. The following conditions 9 * apply to all code found in this distribution, be it the RC4, RSA, 10 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 11 * included with this distribution is covered by the same copyright terms 12 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 13 * 14 * Copyright remains Eric Young's, and as such any Copyright notices in 15 * the code are not to be removed. 16 * If this package is used in a product, Eric Young should be given attribution 17 * as the author of the parts of the library used. 18 * This can be in the form of a textual message at program startup or 19 * in documentation (online or textual) provided with the package. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 3. All advertising materials mentioning features or use of this software 30 * must display the following acknowledgement: 31 * "This product includes cryptographic software written by 32 * Eric Young (eay@cryptsoft.com)" 33 * The word 'cryptographic' can be left out if the rouines from the library 34 * being used are not cryptographic related :-). 35 * 4. If you include any Windows specific code (or a derivative thereof) from 36 * the apps directory (application code) you must include an acknowledgement: 37 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 40 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 42 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 43 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 44 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 45 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 47 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 48 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 49 * SUCH DAMAGE. 50 * 51 * The licence and distribution terms for any publically available version or 52 * derivative of this code cannot be changed. i.e. this code cannot simply be 53 * copied and put under another distribution licence 54 * [including the GNU Public Licence.] */ 55 56 #ifndef OPENSSL_HEADER_MD4_H 57 #define OPENSSL_HEADER_MD4_H 58 59 #include <openssl/base.h> 60 61 #if defined(__cplusplus) 62 extern "C" { 63 #endif 64 65 66 /* MD4. */ 67 68 /* MD4_CBLOCK is the block size of MD4. */ 69 #define MD4_CBLOCK 64 70 71 /* MD4_DIGEST_LENGTH is the length of an MD4 digest. */ 72 #define MD4_DIGEST_LENGTH 16 73 74 /* MD41_Init initialises |md4| and returns one. */ 75 OPENSSL_EXPORT int MD4_Init(MD4_CTX *md4); 76 77 /* MD4_Update adds |len| bytes from |data| to |md4| and returns one. */ 78 OPENSSL_EXPORT int MD4_Update(MD4_CTX *md4, const void *data, size_t len); 79 80 /* MD4_Final adds the final padding to |md4| and writes the resulting digest to 81 * |md|, which must have at least |MD4_DIGEST_LENGTH| bytes of space. It 82 * returns one. */ 83 OPENSSL_EXPORT int MD4_Final(uint8_t *md, MD4_CTX *md4); 84 85 /* MD4_Transform is a low-level function that performs a single, MD4 block 86 * transformation using the state from |md4| and 64 bytes from |block|. */ 87 OPENSSL_EXPORT void MD4_Transform(MD4_CTX *md4, const uint8_t *block); 88 89 struct md4_state_st { 90 uint32_t A, B, C, D; 91 uint32_t Nl, Nh; 92 uint32_t data[16]; 93 unsigned int num; 94 }; 95 96 97 #if defined(__cplusplus) 98 } /* extern C */ 99 #endif 100 101 #endif /* OPENSSL_HEADER_MD4_H */ 102