xref: /openssh-portable/openbsd-compat/sha1.h (revision 81bfbd0b)
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 #ifndef WITH_OPENSSL
13 
14 #define	SHA1_BLOCK_LENGTH		64
15 #define	SHA1_DIGEST_LENGTH		20
16 #define	SHA1_DIGEST_STRING_LENGTH	(SHA1_DIGEST_LENGTH * 2 + 1)
17 
18 typedef struct {
19     u_int32_t state[5];
20     u_int64_t count;
21     u_int8_t buffer[SHA1_BLOCK_LENGTH];
22 } SHA1_CTX;
23 
24 void SHA1Init(SHA1_CTX *);
25 void SHA1Pad(SHA1_CTX *);
26 void SHA1Transform(u_int32_t [5], const u_int8_t [SHA1_BLOCK_LENGTH])
27 	__attribute__((__bounded__(__minbytes__,1,5)))
28 	__attribute__((__bounded__(__minbytes__,2,SHA1_BLOCK_LENGTH)));
29 void SHA1Update(SHA1_CTX *, const u_int8_t *, size_t)
30 	__attribute__((__bounded__(__string__,2,3)));
31 void SHA1Final(u_int8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *)
32 	__attribute__((__bounded__(__minbytes__,1,SHA1_DIGEST_LENGTH)));
33 char *SHA1End(SHA1_CTX *, char *)
34 	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
35 char *SHA1File(const char *, char *)
36 	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
37 char *SHA1FileChunk(const char *, char *, off_t, off_t)
38 	__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
39 char *SHA1Data(const u_int8_t *, size_t, char *)
40 	__attribute__((__bounded__(__string__,1,2)))
41 	__attribute__((__bounded__(__minbytes__,3,SHA1_DIGEST_STRING_LENGTH)));
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 /* !WITH_OPENSSL */
58 #endif /* _SHA1_H */
59