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 */