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from David Madore

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Jim Meyering 2005-10-23 15:53:55 +00:00
parent d294610a58
commit e2cfa48b0f
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/* Declarations of functions and data types used for SHA256 and SHA224 sum
library functions.
Copyright (C) 2005 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
Free Software Foundation; either version 2, or (at your option) any
later version.
This program 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 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. */
#ifndef SHA256_H
# define SHA256_H 1
# include <stdio.h>
# include "md5.h"
/* Structure to save state of computation between the single steps. */
struct sha256_ctx
{
md5_uint32 state[8];
md5_uint32 total[2];
md5_uint32 buflen;
char buffer[128];
};
/* Initialize structure containing state of computation. */
extern void sha256_init_ctx (struct sha256_ctx *ctx);
extern void sha224_init_ctx (struct sha256_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 sha256_process_block (const void *buffer, size_t len,
struct sha256_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 sha256_process_bytes (const void *buffer, size_t len,
struct sha256_ctx *ctx);
/* Process the remaining bytes in the buffer and put result from CTX
in first 32 (28) 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. */
extern void *sha256_finish_ctx (struct sha256_ctx *ctx, void *resbuf);
extern void *sha224_finish_ctx (struct sha256_ctx *ctx, void *resbuf);
/* Put result from CTX in first 32 (28) 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 *sha256_read_ctx (const struct sha256_ctx *ctx, void *resbuf);
extern void *sha224_read_ctx (const struct sha256_ctx *ctx, void *resbuf);
/* Compute SHA256 (SHA224) message digest for bytes read from STREAM. The
resulting message digest number will be written into the 32 (28) bytes
beginning at RESBLOCK. */
extern int sha256_stream (FILE *stream, void *resblock);
extern int sha224_stream (FILE *stream, void *resblock);
/* Compute SHA256 (SHA224) message digest for LEN bytes beginning at BUFFER. 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. */
extern void *sha256_buffer (const char *buffer, size_t len, void *resblock);
extern void *sha224_buffer (const char *buffer, size_t len, void *resblock);
#endif

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/* Declarations of functions and data types used for SHA512 and SHA384 sum
library functions.
Copyright (C) 2005 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
Free Software Foundation; either version 2, or (at your option) any
later version.
This program 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 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. */
#ifndef SHA512_H
# define SHA512_H 1
# include <stdio.h>
/* The following contortions are an attempt to use the C preprocessor
to determine an unsigned integral type that is 64 bits wide. An
alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
doing that would require that the configure script compile and *run*
the resulting executable. Locally running cross-compiled executables
is usually not possible. */
# if HAVE_INTTYPES_H
# include <inttypes.h>
# endif
# if HAVE_STDINT_H || _LIBC
# include <stdint.h>
# endif
typedef uint64_t sha512_uint64;
/* Structure to save state of computation between the single steps. */
struct sha512_ctx
{
sha512_uint64 state[8];
sha512_uint64 total[2];
sha512_uint64 buflen;
char buffer[256];
};
/* Initialize structure containing state of computation. */
extern void sha512_init_ctx (struct sha512_ctx *ctx);
extern void sha384_init_ctx (struct sha512_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 128!!! */
extern void sha512_process_block (const void *buffer, size_t len,
struct sha512_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 128. */
extern void sha512_process_bytes (const void *buffer, size_t len,
struct sha512_ctx *ctx);
/* Process the remaining bytes in the buffer and put result from CTX
in first 64 (48) 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 64 bits value. */
extern void *sha512_finish_ctx (struct sha512_ctx *ctx, void *resbuf);
extern void *sha384_finish_ctx (struct sha512_ctx *ctx, void *resbuf);
/* Put result from CTX in first 64 (48) 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 *sha512_read_ctx (const struct sha512_ctx *ctx, void *resbuf);
extern void *sha384_read_ctx (const struct sha512_ctx *ctx, void *resbuf);
/* Compute SHA512 (SHA384) message digest for bytes read from STREAM. The
resulting message digest number will be written into the 64 (48) bytes
beginning at RESBLOCK. */
extern int sha512_stream (FILE *stream, void *resblock);
extern int sha384_stream (FILE *stream, void *resblock);
/* Compute SHA512 (SHA384) message digest for LEN bytes beginning at BUFFER. 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. */
extern void *sha512_buffer (const char *buffer, size_t len, void *resblock);
extern void *sha384_buffer (const char *buffer, size_t len, void *resblock);
# define rol64(x,n) ( ((x) << (n)) | ((x) >> (64-(n))) )
#endif