1 /*
2 * Copyright (C) 2021 The Android Open Source Project
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 #include <libavb/avb_sha.h>
26
27 #include "avb_crypto_ops_impl.h"
28
29 /* SHA-256 implementation */
avb_sha256_init(AvbSHA256Ctx * ctx)30 void avb_sha256_init(AvbSHA256Ctx* ctx) {
31 SHA256_CTX* realCtx = (SHA256_CTX*)ctx->reserved;
32 SHA256_Init(realCtx);
33 }
34
avb_sha256_update(AvbSHA256Ctx * ctx,const uint8_t * data,size_t len)35 void avb_sha256_update(AvbSHA256Ctx* ctx, const uint8_t* data, size_t len) {
36 SHA256_CTX* realCtx = (SHA256_CTX*)ctx->reserved;
37 SHA256_Update(realCtx, data, len);
38 }
39
avb_sha256_final(AvbSHA256Ctx * ctx)40 uint8_t* avb_sha256_final(AvbSHA256Ctx* ctx) {
41 SHA256_CTX* realCtx = (SHA256_CTX*)ctx->reserved;
42 SHA256_Final(ctx->buf, realCtx);
43 return ctx->buf;
44 }
45
46 /* SHA-512 implementation */
avb_sha512_init(AvbSHA512Ctx * ctx)47 void avb_sha512_init(AvbSHA512Ctx* ctx) {
48 SHA512_CTX* realCtx = (SHA512_CTX*)ctx->reserved;
49 SHA512_Init(realCtx);
50 }
51
avb_sha512_update(AvbSHA512Ctx * ctx,const uint8_t * data,size_t len)52 void avb_sha512_update(AvbSHA512Ctx* ctx, const uint8_t* data, size_t len) {
53 SHA512_CTX* realCtx = (SHA512_CTX*)ctx->reserved;
54 SHA512_Update(realCtx, data, len);
55 }
56
avb_sha512_final(AvbSHA512Ctx * ctx)57 uint8_t* avb_sha512_final(AvbSHA512Ctx* ctx) {
58 SHA512_CTX* realCtx = (SHA512_CTX*)ctx->reserved;
59 SHA512_Final(ctx->buf, realCtx);
60 return ctx->buf;
61 }
62