| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* SHA-256 and SHA-512 implementation based on code by Oliver Gay |
| 2 | * <olivier.gay@a3.epfl.ch> under a BSD-style license. See below. |
| 3 | */ |
| 4 | |
| 5 | /* |
| 6 | * FIPS 180-2 SHA-224/256/384/512 implementation |
| 7 | * Last update: 02/02/2007 |
| 8 | * Issue date: 04/30/2005 |
| 9 | * |
| 10 | * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch> |
| 11 | * All rights reserved. |
| 12 | * |
| 13 | * Redistribution and use in source and binary forms, with or without |
| 14 | * modification, are permitted provided that the following conditions |
| 15 | * are met: |
| 16 | * 1. Redistributions of source code must retain the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer. |
| 18 | * 2. Redistributions in binary form must reproduce the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer in the |
| 20 | * documentation and/or other materials provided with the distribution. |
| 21 | * 3. Neither the name of the project nor the names of its contributors |
| 22 | * may be used to endorse or promote products derived from this software |
| 23 | * without specific prior written permission. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| 26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| 29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 35 | * SUCH DAMAGE. |
| 36 | */ |
| 37 | #include "avb_sha.h" |
| 38 | #include "avb_util.h" |
| 39 | #include "sha256.h" |
| 40 | /* SHA-256 implementation */ |
| 41 | void avb_sha256_init(AvbSHA256Ctx* ctx) { |
| 42 | struct sha256_context* s_ctx = (struct sha256_context*)ctx; |
| 43 | if(sizeof(struct sha256_context)>sizeof(AvbSHA256Ctx)) |
| 44 | { |
| 45 | avb_print("ERROR:sizeof(struct sha256_context)>sizeof(AvbSHA256Ctx)\n"); |
| 46 | while(1); |
| 47 | } |
| 48 | avb_memset(s_ctx, 0, sizeof(struct sha256_context)); |
| 49 | sha256_start(s_ctx); |
| 50 | } |
| 51 | |
| 52 | void avb_sha256_update(AvbSHA256Ctx* ctx, const uint8_t* data, uint32_t len) { |
| 53 | sha256_process((struct sha256_context*)ctx,data,len); |
| 54 | } |
| 55 | |
| 56 | uint8_t* avb_sha256_final(AvbSHA256Ctx* ctx) { |
| 57 | uint8_t* output = avb_malloc(AVB_SHA256_DIGEST_SIZE); |
| 58 | sha256_end((struct sha256_context*)ctx,output); |
| 59 | return output; |
| 60 | } |
| 61 | |