1/*
2 * Copyright 2007 The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *     * Redistributions of source code must retain the above copyright
7 *       notice, this list of conditions and the following disclaimer.
8 *     * Redistributions in binary form must reproduce the above copyright
9 *       notice, this list of conditions and the following disclaimer in the
10 *       documentation and/or other materials provided with the distribution.
11 *     * Neither the name of Google Inc. nor the names of its contributors may
12 *       be used to endorse or promote products derived from this software
13 *       without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
18 * EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_
28#define SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_
29
30#include <stdint.h>
31
32#ifdef __cplusplus
33extern "C" {
34#endif  // __cplusplus
35
36struct HASH_CTX;  // forward decl
37
38typedef struct HASH_VTAB {
39  void (* const init)(struct HASH_CTX*);
40  void (* const update)(struct HASH_CTX*, const void*, int);
41  const uint8_t* (* const final)(struct HASH_CTX*);
42  const uint8_t* (* const hash)(const void*, int, uint8_t*);
43  int size;
44} HASH_VTAB;
45
46typedef struct HASH_CTX {
47  const HASH_VTAB * f;
48  uint64_t count;
49  uint8_t buf[64];
50  uint32_t state[8];  // upto SHA2
51} HASH_CTX;
52
53#define HASH_init(ctx) (ctx)->f->init(ctx)
54#define HASH_update(ctx, data, len) (ctx)->f->update(ctx, data, len)
55#define HASH_final(ctx) (ctx)->f->final(ctx)
56#define HASH_hash(data, len, digest) (ctx)->f->hash(data, len, digest)
57#define HASH_size(ctx) (ctx)->f->size
58
59#ifdef __cplusplus
60}
61#endif  // __cplusplus
62
63#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_
64