1 /* 2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef OPENSSL_HEADER_MD4_H 11 #define OPENSSL_HEADER_MD4_H 12 13 #include <openssl/base.h> 14 15 #if defined(__cplusplus) 16 extern "C" { 17 #endif 18 19 20 // MD4. 21 22 // MD4_CBLOCK is the block size of MD4. 23 #define MD4_CBLOCK 64 24 25 // MD4_DIGEST_LENGTH is the length of an MD4 digest. 26 #define MD4_DIGEST_LENGTH 16 27 28 // MD4_Init initialises |md4| and returns one. 29 OPENSSL_EXPORT int MD4_Init(MD4_CTX *md4); 30 31 // MD4_Update adds |len| bytes from |data| to |md4| and returns one. 32 OPENSSL_EXPORT int MD4_Update(MD4_CTX *md4, const void *data, size_t len); 33 34 // MD4_Final adds the final padding to |md4| and writes the resulting digest to 35 // |out|, which must have at least |MD4_DIGEST_LENGTH| bytes of space. It 36 // returns one. 37 OPENSSL_EXPORT int MD4_Final(uint8_t out[MD4_DIGEST_LENGTH], MD4_CTX *md4); 38 39 // MD4 writes the digest of |len| bytes from |data| to |out| and returns |out|. 40 // There must be at least |MD4_DIGEST_LENGTH| bytes of space in |out|. 41 OPENSSL_EXPORT uint8_t *MD4(const uint8_t *data, size_t len, 42 uint8_t out[MD4_DIGEST_LENGTH]); 43 44 // MD4_Transform is a low-level function that performs a single, MD4 block 45 // transformation using the state from |md4| and 64 bytes from |block|. 46 OPENSSL_EXPORT void MD4_Transform(MD4_CTX *md4, 47 const uint8_t block[MD4_CBLOCK]); 48 49 struct md4_state_st { 50 uint32_t h[4]; 51 uint32_t Nl, Nh; 52 uint8_t data[MD4_CBLOCK]; 53 unsigned num; 54 }; 55 56 57 #if defined(__cplusplus) 58 } // extern C 59 #endif 60 61 #endif // OPENSSL_HEADER_MD4_H 62