1 /* 2 * FIPS 180-2 SHA-224/256/384/512 implementation 3 * Last update: 02/02/2007 4 * Issue date: 04/30/2005 5 * 6 * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef SHA2_H 35 #define SHA2_H 36 37 #include "hash-method.h" 38 #include "sha-common.h" 39 40 struct sha256_ctx { 41 size_t tot_len; 42 size_t len; 43 unsigned char block[2 * SHA256_BLOCK_SIZE]; 44 uint32_t h[8]; 45 }; 46 47 struct sha384_ctx { 48 size_t tot_len; 49 size_t len; 50 unsigned char block[2 * SHA384_BLOCK_SIZE]; 51 uint64_t h[8]; 52 }; 53 54 struct sha512_ctx { 55 size_t tot_len; 56 size_t len; 57 unsigned char block[2 * SHA512_BLOCK_SIZE]; 58 uint64_t h[8]; 59 }; 60 61 void sha256_init(struct sha256_ctx *ctx); 62 void sha256_loop(struct sha256_ctx *ctx, const void *data, size_t len); 63 void sha256_result(struct sha256_ctx *ctx, 64 unsigned char digest[STATIC_ARRAY SHA256_RESULTLEN]); 65 66 void sha256_get_digest(const void *data, size_t size, 67 unsigned char digest[STATIC_ARRAY SHA256_RESULTLEN]); 68 69 void sha384_init(struct sha384_ctx *ctx); 70 void sha384_loop(struct sha384_ctx *ctx, const void *data, size_t len); 71 void sha384_result(struct sha384_ctx *ctx, 72 unsigned char digest[STATIC_ARRAY SHA384_RESULTLEN]); 73 74 void sha384_get_digest(const void *data, size_t size, 75 unsigned char digest[STATIC_ARRAY SHA384_RESULTLEN]); 76 77 void sha512_init(struct sha512_ctx *ctx); 78 void sha512_loop(struct sha512_ctx *ctx, const void *data, size_t len); 79 void sha512_result(struct sha512_ctx *ctx, 80 unsigned char digest[STATIC_ARRAY SHA512_RESULTLEN]); 81 82 void sha512_get_digest(const void *data, size_t size, 83 unsigned char digest[STATIC_ARRAY SHA512_RESULTLEN]); 84 85 extern const struct hash_method hash_method_sha256; 86 extern const struct hash_method hash_method_sha384; 87 extern const struct hash_method hash_method_sha512; 88 89 #endif /* !SHA2_H */ 90