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/* $OpenBSD: sha1.h,v 1.24 2012/12/05 23:19:57 deraadt Exp $ */
/*
* SHA-1 in C
* By Steve Reid <steve@edmweb.com>
* 100% Public Domain
*/
#ifndef _SHA1_H
#define _SHA1_H
#define SHA1_BLOCK_LENGTH 64
#define SHA1_DIGEST_LENGTH 20
#define SHA1_DIGEST_STRING_LENGTH (SHA1_DIGEST_LENGTH * 2 + 1)
typedef struct {
u_int32_t state[5];
u_int64_t count;
u_int8_t buffer[SHA1_BLOCK_LENGTH];
} SHA1_CTX;
__BEGIN_DECLS
void SHA1Init(SHA1_CTX *);
void SHA1Pad(SHA1_CTX *);
void SHA1Transform(u_int32_t [5], const u_int8_t [SHA1_BLOCK_LENGTH])
__attribute__((__bounded__(__minbytes__,1,5)))
__attribute__((__bounded__(__minbytes__,2,SHA1_BLOCK_LENGTH)));
void SHA1Update(SHA1_CTX *, const u_int8_t *, size_t)
__attribute__((__bounded__(__string__,2,3)));
void SHA1Final(u_int8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *)
__attribute__((__bounded__(__minbytes__,1,SHA1_DIGEST_LENGTH)));
char *SHA1End(SHA1_CTX *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
char *SHA1File(const char *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
char *SHA1FileChunk(const char *, char *, off_t, off_t)
__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
char *SHA1Data(const u_int8_t *, size_t, char *)
__attribute__((__bounded__(__string__,1,2)))
__attribute__((__bounded__(__minbytes__,3,SHA1_DIGEST_STRING_LENGTH)));
__END_DECLS
#define HTONDIGEST(x) do { \
x[0] = htonl(x[0]); \
x[1] = htonl(x[1]); \
x[2] = htonl(x[2]); \
x[3] = htonl(x[3]); \
x[4] = htonl(x[4]); } while (0)
#define NTOHDIGEST(x) do { \
x[0] = ntohl(x[0]); \
x[1] = ntohl(x[1]); \
x[2] = ntohl(x[2]); \
x[3] = ntohl(x[3]); \
x[4] = ntohl(x[4]); } while (0)
#endif /* _SHA1_H */
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