blob: 130a666788ee7725adc0cd2ef577090e5824ef53 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
/* Copyright 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* SHA-256 functions */
#ifndef __CROS_EC_SHA256_H
#define __CROS_EC_SHA256_H
#include "common.h"
#define SHA256_DIGEST_SIZE 32
#define SHA256_BLOCK_SIZE 64
#ifdef CONFIG_SHA256_HW_ACCELERATE
/*
* The chip's header file must implement the SHA256 context structure and
* specific functions for its hardware accelerator module.
*/
#include "sha256_chip.h"
#else
/* SHA256 context */
struct sha256_ctx {
uint32_t h[8];
uint32_t tot_len;
uint32_t len;
uint8_t block[2 * SHA256_BLOCK_SIZE];
uint8_t buf[SHA256_DIGEST_SIZE]; /* Used to store the final digest. */
};
#endif
void SHA256_init(struct sha256_ctx *ctx);
void SHA256_update(struct sha256_ctx *ctx, const uint8_t *data, uint32_t len);
uint8_t *SHA256_final(struct sha256_ctx *ctx);
void hmac_SHA256(uint8_t *output, const uint8_t *key, const int key_len,
const uint8_t *message, const int message_len);
#endif /* __CROS_EC_SHA256_H */
|
