1 /* 2 * FILE: sha2.h 3 * AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/ 4 * 5 * Copyright (c) 2000-2001, Aaron D. Gifford 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the copyright holder nor the names of contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef __SHA2_H__ 34 #define __SHA2_H__ 35 36 #include <basetsd.h> 37 38 /*** SHA-256/384/512 Various Length Definitions ***********************/ 39 #define SHA256_BLOCK_LENGTH 64 40 #define SHA256_DIGEST_LENGTH 32 41 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1) 42 #define SHA384_BLOCK_LENGTH 128 43 #define SHA384_DIGEST_LENGTH 48 44 #define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1) 45 #define SHA512_BLOCK_LENGTH 128 46 #define SHA512_DIGEST_LENGTH 64 47 #define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1) 48 49 50 /*** SHA-256/384/512 Context Structures *******************************/ 51 typedef UINT8 sha2_byte; /* Exactly 1 byte */ 52 typedef UINT32 sha2_word32; /* Exactly 4 bytes */ 53 typedef UINT64 sha2_word64; /* Exactly 8 bytes */ 54 55 typedef struct _SHA256_CTX { 56 sha2_word32 state[8]; 57 sha2_word64 bitcount; 58 sha2_byte buffer[SHA256_BLOCK_LENGTH]; 59 } SHA256_CTX; 60 typedef struct _SHA512_CTX { 61 sha2_word64 state[8]; 62 sha2_word64 bitcount[2]; 63 sha2_byte buffer[SHA512_BLOCK_LENGTH]; 64 } SHA512_CTX; 65 66 typedef SHA512_CTX SHA384_CTX; 67 68 69 /*** SHA-256/384/512 Function Prototypes ******************************/ 70 71 void SHA256_Init(SHA256_CTX *); 72 void SHA256_Update(SHA256_CTX*, const sha2_byte*, size_t); 73 void SHA256_Final(sha2_byte[SHA256_DIGEST_LENGTH], SHA256_CTX*); 74 char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]); 75 char* SHA256_Data(const sha2_byte*, size_t, char[SHA256_DIGEST_STRING_LENGTH]); 76 77 void SHA384_Init(SHA384_CTX*); 78 void SHA384_Update(SHA384_CTX*, const sha2_byte*, size_t); 79 void SHA384_Final(sha2_byte[SHA384_DIGEST_LENGTH], SHA384_CTX*); 80 char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]); 81 char* SHA384_Data(const sha2_byte*, size_t, char[SHA384_DIGEST_STRING_LENGTH]); 82 83 void SHA512_Init(SHA512_CTX*); 84 void SHA512_Update(SHA512_CTX*, const sha2_byte*, size_t); 85 void SHA512_Final(sha2_byte[SHA512_DIGEST_LENGTH], SHA512_CTX*); 86 char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]); 87 char* SHA512_Data(const sha2_byte*, size_t, char[SHA512_DIGEST_STRING_LENGTH]); 88 89 #endif /* __SHA2_H__ */ 90