/* SHA.H - header file for SHA.C

*/

#ifndef _SHA_H_

#define _SHA_H_

#include <sys/types.h>

/*

* Define to 1 for FIPS 180.1 version (with extra rotate in prescheduling),

* 0 for FIPS 180 version (with the mysterious "weakness" that the NSA

* isn't talking about).

*/

#define SHA_VERSION 1

#define SHA_BLOCKBYTES 64

#define SHA_BLOCKWORDS 16

#define SHA_HASHBYTES 20

#define SHA_HASHWORDS 5

/* SHA context. */

typedef struct SHAContext {

unsigned int key[SHA_BLOCKWORDS];

u_int32_t iv[SHA_HASHWORDS];

#ifdef __GNUC__

u_int64_t bytes;

#else

u_int32_t bytesHi, bytesLo;

#endif

} SHA_CTX;

#include <sys/cdefs.h>

__BEGIN_DECLS

extern void SHAInit(SHA_CTX *);

extern void SHAUpdate(SHA_CTX *, const unsigned char *, unsigned int);

extern void SHAFinal(unsigned char [SHA_HASHBYTES], SHA_CTX *);

extern char * SHAEnd(SHA_CTX *, char *);

extern char * SHAFile(const char *, char *);

extern char * SHAData(const unsigned char *, unsigned int, char *);

__END_DECLS

#endif /* _SHA_H_ */