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#ifndef _SHA2_H
#define _SHA2_H
/*
* sha512.h
*
* Written by Jari Ruusu, April 16 2001
*
* Copyright 2001 by Jari Ruusu.
* Redistribution of this file is permitted under the GNU Public License.
*/
#ifdef __KERNEL__
#include <linux/types.h>
#else
#include <sys/types.h>
#endif
typedef struct {
unsigned char sha_out[64]; /* results are here, bytes 0...31 */
u_int32_t sha_H[8];
u_int64_t sha_blocks;
int sha_bufCnt;
} sha256_context;
typedef struct {
unsigned char sha_out[128]; /* results are here, bytes 0...63 */
u_int64_t sha_H[8];
u_int64_t sha_blocks;
u_int64_t sha_blocksMSB;
int sha_bufCnt;
} sha512_context;
/* no sha384_context, use sha512_context */
/* 256 bit hash, provides 128 bits of security against collision attacks */
extern void sha256_init(sha256_context *);
extern void sha256_write(sha256_context *, const unsigned char *, int);
extern void sha256_final(sha256_context *);
extern void sha256_hash_buffer(unsigned char *, int, unsigned char *, int);
/* 512 bit hash, provides 256 bits of security against collision attacks */
extern void sha512_init(sha512_context *);
extern void sha512_write(sha512_context *, const unsigned char *, int);
extern void sha512_final(sha512_context *);
extern void sha512_hash_buffer(unsigned char *, int, unsigned char *, int);
/* 384 bit hash, provides 192 bits of security against collision attacks */
extern void sha384_init(sha512_context *);
/* no sha384_write(), use sha512_write() */
/* no sha384_final(), use sha512_final(), result in ctx->sha_out[0...47] */
extern void sha384_hash_buffer(unsigned char *, int, unsigned char *, int);
#endif /* _SHA2_H */
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