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/* Yet another SHA-1 implementation.
*
* Copyright (c) 2003 Red Hat, Inc.
* Written by Nalin Dahyabhai <nalin@redhat.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of
* the GNU Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is
* necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef pam_timestamp_sha1_h
#define pam_timestamp_sha1_h
#include <stdint.h>
#include <sys/types.h>
#include "pam_cc_compat.h"
#define SHA1_BLOCK_SIZE 64
struct sha1_context {
size_t count;
union {
unsigned char c[SHA1_BLOCK_SIZE];
uint32_t i[SHA1_BLOCK_SIZE / sizeof(uint32_t)];
} pending;
uint32_t counts[2];
size_t pending_count;
uint32_t a, b, c, d, e;
};
#define SHA1_OUTPUT_SIZE 20
void sha1_init(struct sha1_context *ctx);
void sha1_update(struct sha1_context *ctx,
const unsigned char *data, size_t length);
size_t sha1_output(struct sha1_context *ctx, unsigned char *out);
#endif
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