1/*	$OpenBSD: sha1.h,v 1.24 2012/12/05 23:19:57 deraadt Exp $	*/
2
3/*
4 * SHA-1 in C
5 * By Steve Reid <steve@edmweb.com>
6 * 100% Public Domain
7 */
8
9#ifndef _SHA1_H
10#define _SHA1_H
11
12#define	SHA1_BLOCK_LENGTH		64
13#define	SHA1_DIGEST_LENGTH		20
14#define	SHA1_DIGEST_STRING_LENGTH	(SHA1_DIGEST_LENGTH * 2 + 1)
15
16typedef struct {
17    u_int32_t state[5];
18    u_int64_t count;
19    u_int8_t buffer[SHA1_BLOCK_LENGTH];
20} SHA1_CTX;
21
22__BEGIN_DECLS
23void SHA1Init(SHA1_CTX *);
24void SHA1Pad(SHA1_CTX *);
25void SHA1Transform(u_int32_t [5], const u_int8_t [SHA1_BLOCK_LENGTH])
26	__attribute__((__bounded__(__minbytes__,1,5)))
27	__attribute__((__bounded__(__minbytes__,2,SHA1_BLOCK_LENGTH)));
28void SHA1Update(SHA1_CTX *, const u_int8_t *, size_t)
29	__attribute__((__bounded__(__string__,2,3)));
30void SHA1Final(u_int8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *)
31	__attribute__((__bounded__(__minbytes__,1,SHA1_DIGEST_LENGTH)));
32char *SHA1End(SHA1_CTX *, char *)
33	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
34char *SHA1File(const char *, char *)
35	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
36char *SHA1FileChunk(const char *, char *, off_t, off_t)
37	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
38char *SHA1Data(const u_int8_t *, size_t, char *)
39	__attribute__((__bounded__(__string__,1,2)))
40	__attribute__((__bounded__(__minbytes__,3,SHA1_DIGEST_STRING_LENGTH)));
41__END_DECLS
42
43#define HTONDIGEST(x) do {                                              \
44        x[0] = htonl(x[0]);                                             \
45        x[1] = htonl(x[1]);                                             \
46        x[2] = htonl(x[2]);                                             \
47        x[3] = htonl(x[3]);                                             \
48        x[4] = htonl(x[4]); } while (0)
49
50#define NTOHDIGEST(x) do {                                              \
51        x[0] = ntohl(x[0]);                                             \
52        x[1] = ntohl(x[1]);                                             \
53        x[2] = ntohl(x[2]);                                             \
54        x[3] = ntohl(x[3]);                                             \
55        x[4] = ntohl(x[4]); } while (0)
56
57#endif /* _SHA1_H */
58