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-rw-r--r--src/lib/sha1.h93
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diff --git a/src/lib/sha1.h b/src/lib/sha1.h
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--- a/src/lib/sha1.h
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-/* Declaration of functions and data types used for SHA1 sum computing
- library functions.
- Copyright (C) 2008 Red Hat, Inc.
- This file is part of elfutils.
- Written by Ulrich Drepper <drepper@redhat.com>, 2008.
-
- This file is free software; you can redistribute it and/or modify
- it under the terms of either
-
- * the GNU Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at
- your option) any later version
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at
- your option) any later version
-
- or both in parallel, as here.
-
- elfutils is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received copies of the GNU General Public License and
- the GNU Lesser General Public License along with this program. If
- not, see <http://www.gnu.org/licenses/>. */
-
-#ifndef _SHA1_H
-#define _SHA1_H 1
-
-#include <limits.h>
-#include <stdint.h>
-#include <stdio.h>
-
-#define SHA1_DIGEST_SIZE 20
-#define SHA1_BLOCK_SIZE 64
-
-typedef uint32_t sha1_uint32;
-typedef uintptr_t sha1_uintptr;
-
-/* Structure to save state of computation between the single steps. */
-struct sha1_ctx
-{
- sha1_uint32 A;
- sha1_uint32 B;
- sha1_uint32 C;
- sha1_uint32 D;
- sha1_uint32 E;
-
- sha1_uint32 total[2];
- sha1_uint32 buflen;
- char buffer[128] __attribute__ ((__aligned__ (__alignof__ (sha1_uint32))));
-};
-
-/* Initialize structure containing state of computation. */
-extern void sha1_init_ctx (struct sha1_ctx *ctx);
-
-/* Starting with the result of former calls of this function (or the
- initialization function update the context for the next LEN bytes
- starting at BUFFER.
- It is necessary that LEN is a multiple of 64!!! */
-extern void sha1_process_block (const void *buffer, size_t len,
- struct sha1_ctx *ctx);
-
-/* Starting with the result of former calls of this function (or the
- initialization function update the context for the next LEN bytes
- starting at BUFFER.
- It is NOT required that LEN is a multiple of 64. */
-extern void sha1_process_bytes (const void *buffer, size_t len,
- struct sha1_ctx *ctx);
-
-/* Process the remaining bytes in the buffer and put result from CTX
- in first 20 bytes following RESBUF. The result is always in little
- endian byte order, so that a byte-wise output yields to the wanted
- ASCII representation of the message digest.
-
- IMPORTANT: On some systems it is required that RESBUF is correctly
- aligned for a 32 bits value. */
-extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf);
-
-
-/* Put result from CTX in first 20 bytes following RESBUF. The result is
- always in little endian byte order, so that a byte-wise output yields
- to the wanted ASCII representation of the message digest.
-
- IMPORTANT: On some systems it is required that RESBUF is correctly
- aligned for a 32 bits value. */
-extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
-
-#endif /* sha1.h */