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Use a common source file for all the hash helper functions that
previously lived in foohl.c.  The foohl.c files are now generated
via sed, though perhaps cpp could be used in the future.

Use u_int8_t instead of unsigned char for the buffers struct fooContext.
Add constants for buffer lengths and use them in function prototypes
and the man pages.

This is basically cosmetic surgery; there should be no functional changes.

OK deraadt@

/*	$OpenBSD: sha1.h,v 1.17 2004/04/26 19:38:12 millert 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_int32_t count[2];
    u_int8_t buffer[SHA1_BLOCK_LENGTH];
} SHA1_CTX;

#include <sys/cdefs.h>

__BEGIN_DECLS
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 SHA1Init(SHA1_CTX *);
void SHA1Update(SHA1_CTX *, const u_int8_t *, unsigned int)
		__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 [SHA1_DIGEST_STRING_LENGTH])
		__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
char *SHA1File(char *, char [SHA1_DIGEST_STRING_LENGTH])
		__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
char *SHA1Data(const u_int8_t *, size_t, char [SHA1_DIGEST_STRING_LENGTH])
		__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 */