/* Declarations of functions and data types used for SHA1 sum
library functions.
- Copyright (C) 2000, 2001, 2003, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2013 Free Software
+ Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program; if not, see <http://www.gnu.org/licenses/>. */
#ifndef SHA1_H
# define SHA1_H 1
# include <stdio.h>
# include <stdint.h>
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+#define SHA1_DIGEST_SIZE 20
+
/* Structure to save state of computation between the single steps. */
struct sha1_ctx
{
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);
+ 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);
+ 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 be correctly
- aligned for a 32 bits value. */
+ ASCII representation of the message digest. */
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. */
+ to the wanted ASCII representation of the message digest. */
extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
digest. */
extern void *sha1_buffer (const char *buffer, size_t len, void *resblock);
+# ifdef __cplusplus
+}
+# endif
+
#endif