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SHA256.h
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1 /*
2  * FIPS 180-2 SHA-224/256/384/512 implementation
3  * Last update: 02/02/2007
4  * Issue date: 04/30/2005
5  *
6  * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  * notice, this list of conditions and the following disclaimer in the
16  * documentation and/or other materials provided with the distribution.
17  * 3. Neither the name of the project nor the names of its contributors
18  * may be used to endorse or promote products derived from this software
19  * without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #ifndef SHA2_H
35 #define SHA2_H
36 
37 #define SHA256_DIGEST_SIZE ( 256 / 8)
38 #define SHA256_BLOCK_SIZE ( 512 / 8)
39 
40 #include <znc/zncconfig.h>
41 
42 // C99 defines stdint.h which defines a uint32_t and uint8_t type.
43 // But the other kids didn't want to play with poor little Solaris 9 and so he
44 // just defines these in inttypes.h which is also part of C99 and is supposed to
45 // include stdint.h. Solaris 9 is a weirdo. :(
46 #include <inttypes.h>
47 #include <cstddef>
48 
49 typedef struct {
50  size_t tot_len;
51  size_t len;
52  unsigned char block[2 * SHA256_BLOCK_SIZE];
53  uint32_t h[8];
54 } sha256_ctx;
55 
56 void sha256_init(sha256_ctx * ctx);
57 void sha256_update(sha256_ctx *ctx, const unsigned char *message,
58  size_t len);
59 void sha256_final(sha256_ctx *ctx, unsigned char *digest);
60 void sha256(const unsigned char *message, size_t len,
61  unsigned char *digest);
62 
63 #endif /* !SHA2_H */
64 
void sha256_update(sha256_ctx *ctx, const unsigned char *message, size_t len)
void sha256(const unsigned char *message, size_t len, unsigned char *digest)
void sha256_final(sha256_ctx *ctx, unsigned char *digest)
size_t len
Definition: SHA256.h:51
Definition: SHA256.h:49
void sha256_init(sha256_ctx *ctx)
#define SHA256_BLOCK_SIZE
Definition: SHA256.h:38
size_t tot_len
Definition: SHA256.h:50