1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #ifndef OPENSSL_HEADER_MD4_H 58 #define OPENSSL_HEADER_MD4_H 59 60 #include <openssl/base.h> 61 62 #if defined(__cplusplus) 63 extern "C" { 64 #endif 65 66 67 // MD4. 68 69 // MD4_CBLOCK is the block size of MD4. 70 #define MD4_CBLOCK 64 71 72 // MD4_DIGEST_LENGTH is the length of an MD4 digest. 73 #define MD4_DIGEST_LENGTH 16 74 75 // MD4_Init initialises |md4| and returns one. 76 OPENSSL_EXPORT int MD4_Init(MD4_CTX *md4); 77 78 // MD4_Update adds |len| bytes from |data| to |md4| and returns one. 79 OPENSSL_EXPORT int MD4_Update(MD4_CTX *md4, const void *data, size_t len); 80 81 // MD4_Final adds the final padding to |md4| and writes the resulting digest to 82 // |md|, which must have at least |MD4_DIGEST_LENGTH| bytes of space. It 83 // returns one. 84 OPENSSL_EXPORT int MD4_Final(uint8_t *md, MD4_CTX *md4); 85 86 // MD4 writes the digest of |len| bytes from |data| to |out| and returns |out|. 87 // There must be at least |MD4_DIGEST_LENGTH| bytes of space in |out|. 88 OPENSSL_EXPORT uint8_t *MD4(const uint8_t *data, size_t len, uint8_t *out); 89 90 // MD4_Transform is a low-level function that performs a single, MD4 block 91 // transformation using the state from |md4| and 64 bytes from |block|. 92 OPENSSL_EXPORT void MD4_Transform(MD4_CTX *md4, const uint8_t *block); 93 94 struct md4_state_st { 95 uint32_t h[4]; 96 uint32_t Nl, Nh; 97 uint8_t data[MD4_CBLOCK]; 98 unsigned num; 99 }; 100 101 102 #if defined(__cplusplus) 103 } // extern C 104 #endif 105 106 #endif // OPENSSL_HEADER_MD4_H 107
