sha1.h

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/*
Copyright (C) 2008- The University of Notre Dame
This software is distributed under the GNU General Public License.
See the file COPYING for details.
*/

#ifndef SHA1_H
#define SHA1_H

#include <stdint.h>
#include <stdlib.h>

/* When linking with libcvmfs, we have a name clash with functions of similar purpose.  Redefine the names here to protect our namespace. */

#define sha1_init    dttools_sha1_init
#define sha1_update  dttools_sha1_update
#define sha1_final   dttools_sha1_final
#define sha1_buffer  dttools_sha1_buffer
#define sha1_file    dttools_sha1_file
#define sha1_string  dttools_sha1_string

#define SHA1_DIGEST_LENGTH 20
#define SHA1_DIGEST_ASCII_LENGTH 42

typedef struct {
        uint32_t digest[5];
        size_t countLo, countHi;
        uint32_t data[16];
        int Endianness;
} sha1_context_t;

void sha1_init(sha1_context_t * ctx);
void sha1_update(sha1_context_t * ctx, const void *, size_t);
void sha1_final(unsigned char digest[SHA1_DIGEST_LENGTH], sha1_context_t * ctx);

void sha1_buffer(const void *buffer, size_t length, unsigned char digest[SHA1_DIGEST_LENGTH]);

int sha1_file(const char *path, unsigned char digest[SHA1_DIGEST_LENGTH]);

int sha1_fd(int fd, unsigned char digest[SHA1_DIGEST_LENGTH]);

const char *sha1_string(unsigned char digest[SHA1_DIGEST_LENGTH]);

#endif