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