md5.h (2155B)
1 // Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef OPENSSL_HEADER_MD5_H 16 #define OPENSSL_HEADER_MD5_H 17 18 #include <openssl/base.h> // IWYU pragma: export 19 20 #if defined(__cplusplus) 21 extern "C" { 22 #endif 23 24 25 // MD5. 26 27 28 // MD5_CBLOCK is the block size of MD5. 29 #define MD5_CBLOCK 64 30 31 // MD5_DIGEST_LENGTH is the length of an MD5 digest. 32 #define MD5_DIGEST_LENGTH 16 33 34 // MD5_Init initialises |md5| and returns one. 35 OPENSSL_EXPORT int MD5_Init(MD5_CTX *md5); 36 37 // MD5_Update adds |len| bytes from |data| to |md5| and returns one. 38 OPENSSL_EXPORT int MD5_Update(MD5_CTX *md5, const void *data, size_t len); 39 40 // MD5_Final adds the final padding to |md5| and writes the resulting digest to 41 // |out|, which must have at least |MD5_DIGEST_LENGTH| bytes of space. It 42 // returns one. 43 OPENSSL_EXPORT int MD5_Final(uint8_t out[MD5_DIGEST_LENGTH], MD5_CTX *md5); 44 45 // MD5 writes the digest of |len| bytes from |data| to |out| and returns |out|. 46 // There must be at least |MD5_DIGEST_LENGTH| bytes of space in |out|. 47 OPENSSL_EXPORT uint8_t *MD5(const uint8_t *data, size_t len, 48 uint8_t out[MD5_DIGEST_LENGTH]); 49 50 // MD5_Transform is a low-level function that performs a single, MD5 block 51 // transformation using the state from |md5| and 64 bytes from |block|. 52 OPENSSL_EXPORT void MD5_Transform(MD5_CTX *md5, 53 const uint8_t block[MD5_CBLOCK]); 54 55 struct md5_state_st { 56 uint32_t h[4]; 57 uint32_t Nl, Nh; 58 uint8_t data[MD5_CBLOCK]; 59 unsigned num; 60 }; 61 62 63 #if defined(__cplusplus) 64 } // extern C 65 #endif 66 67 #endif // OPENSSL_HEADER_MD5_H