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  * Since this code has been incorporated into a GPLv2 project, it is
7  * distributed under GPLv2 inside mmc-utils.  The original BSD license
8  * that the code was released under is included below for clarity.
9  *
10  * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
11  * All rights reserved.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. Neither the name of the project nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  */
37 
38 #ifndef SHA2_H
39 #define SHA2_H
40 
41 #define SHA224_DIGEST_SIZE ( 224 / 8)
42 #define SHA256_DIGEST_SIZE ( 256 / 8)
43 #define SHA384_DIGEST_SIZE ( 384 / 8)
44 #define SHA512_DIGEST_SIZE ( 512 / 8)
45 
46 #define SHA256_BLOCK_SIZE  ( 512 / 8)
47 #define SHA512_BLOCK_SIZE  (1024 / 8)
48 #define SHA384_BLOCK_SIZE  SHA512_BLOCK_SIZE
49 #define SHA224_BLOCK_SIZE  SHA256_BLOCK_SIZE
50 
51 #ifndef SHA2_TYPES
52 #define SHA2_TYPES
53 typedef unsigned char uint8;
54 typedef unsigned int  uint32;
55 typedef unsigned long long uint64;
56 #endif
57 
58 #ifdef __cplusplus
59 extern "C" {
60 #endif
61 
62 typedef struct {
63     unsigned int tot_len;
64     unsigned int len;
65     unsigned char block[2 * SHA256_BLOCK_SIZE];
66     uint32 h[8];
67 } sha256_ctx;
68 
69 typedef struct {
70     unsigned int tot_len;
71     unsigned int len;
72     unsigned char block[2 * SHA512_BLOCK_SIZE];
73     uint64 h[8];
74 } sha512_ctx;
75 
76 typedef sha512_ctx sha384_ctx;
77 typedef sha256_ctx sha224_ctx;
78 
79 void sha224_init(sha224_ctx *ctx);
80 void sha224_update(sha224_ctx *ctx, const unsigned char *message,
81                    unsigned int len);
82 void sha224_final(sha224_ctx *ctx, unsigned char *digest);
83 void sha224(const unsigned char *message, unsigned int len,
84             unsigned char *digest);
85 
86 void sha256_init(sha256_ctx * ctx);
87 void sha256_update(sha256_ctx *ctx, const unsigned char *message,
88                    unsigned int len);
89 void sha256_final(sha256_ctx *ctx, unsigned char *digest);
90 void sha256(const unsigned char *message, unsigned int len,
91             unsigned char *digest);
92 
93 void sha384_init(sha384_ctx *ctx);
94 void sha384_update(sha384_ctx *ctx, const unsigned char *message,
95                    unsigned int len);
96 void sha384_final(sha384_ctx *ctx, unsigned char *digest);
97 void sha384(const unsigned char *message, unsigned int len,
98             unsigned char *digest);
99 
100 void sha512_init(sha512_ctx *ctx);
101 void sha512_update(sha512_ctx *ctx, const unsigned char *message,
102                    unsigned int len);
103 void sha512_final(sha512_ctx *ctx, unsigned char *digest);
104 void sha512(const unsigned char *message, unsigned int len,
105             unsigned char *digest);
106 
107 #ifdef __cplusplus
108 }
109 #endif
110 
111 #endif /* !SHA2_H */
112 
113