1/*	$NetBSD: hmac.h,v 1.2 2017/01/28 21:31:47 christos Exp $	*/
2
3/*
4 * Copyright (c) 2005 Kungliga Tekniska H��gskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36/* Id */
37
38#ifndef HEIM_HMAC_H
39#define HEIM_HMAC_H 1
40
41#include <hcrypto/evp.h>
42
43/* symbol renaming */
44#define HMAC_CTX_init hc_HMAC_CTX_init
45#define HMAC_CTX_cleanup hc_HMAC_CTX_cleanup
46#define HMAC_size hc_HMAC_size
47#define HMAC_Init_ex hc_HMAC_Init_ex
48#define HMAC_Update hc_HMAC_Update
49#define HMAC_Final hc_HMAC_Final
50#define HMAC hc_HMAC
51
52/*
53 *
54 */
55
56#define HMAC_MAX_MD_CBLOCK	64
57
58typedef struct hc_HMAC_CTX HMAC_CTX;
59
60struct hc_HMAC_CTX {
61    const EVP_MD *md;
62    ENGINE *engine;
63    EVP_MD_CTX *ctx;
64    size_t key_length;
65    void *opad;
66    void *ipad;
67    void *buf;
68};
69
70
71void	HMAC_CTX_init(HMAC_CTX *);
72void	HMAC_CTX_cleanup(HMAC_CTX *ctx);
73
74size_t	HMAC_size(const HMAC_CTX *ctx);
75
76void	HMAC_Init_ex(HMAC_CTX *, const void *, size_t,
77		     const EVP_MD *, ENGINE *);
78void	HMAC_Update(HMAC_CTX *ctx, const void *data, size_t len);
79void	HMAC_Final(HMAC_CTX *ctx, void *md, unsigned int *len);
80
81void *	HMAC(const EVP_MD *evp_md, const void *key, size_t key_len,
82	     const void *data, size_t n, void *md, unsigned int *md_len);
83
84#endif /* HEIM_HMAC_H */
85