diff options
author | Jakub Jelinek <jakub@redhat.com> | 2007-09-20 00:11:37 +0000 |
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committer | Jakub Jelinek <jakub@redhat.com> | 2007-09-20 00:11:37 +0000 |
commit | 62beba6902f315a14113c26ed3e068342e101399 (patch) | |
tree | e45d44d1e6f5856a91a1fc98d5f635c82322a183 /crypt/sha256.h | |
parent | 7913ba4d91b848ec4e5698c59d43198a3ef9215d (diff) |
Updated to fedora-glibc-20070920T0007cvs/fedora-glibc-2_6_90-15
Diffstat (limited to 'crypt/sha256.h')
-rw-r--r-- | crypt/sha256.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/crypt/sha256.h b/crypt/sha256.h new file mode 100644 index 0000000000..be8b0772cb --- /dev/null +++ b/crypt/sha256.h @@ -0,0 +1,58 @@ +/* Declaration of functions and data types used for SHA256 sum computing + library functions. + Copyright (C) 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SHA256_H +#define _SHA256_H 1 + +#include <limits.h> +#include <stdint.h> +#include <stdio.h> + + +/* Structure to save state of computation between the single steps. */ +struct sha256_ctx +{ + uint32_t H[8]; + + uint32_t total[2]; + uint32_t buflen; + char buffer[128] __attribute__ ((__aligned__ (__alignof__ (uint32_t)))); +}; + +/* Initialize structure containing state of computation. + (FIPS 180-2: 5.3.2) */ +extern void __sha256_init_ctx (struct sha256_ctx *ctx) __THROW; + +/* 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) __THROW; + +/* Process the remaining bytes in the buffer and put result from CTX + in first 32 bytes following RESBUF. + + IMPORTANT: On some systems it is required that RESBUF is correctly + aligned for a 32 bits value. */ +extern void *__sha256_finish_ctx (struct sha256_ctx *ctx, void *resbuf) + __THROW; + +#endif /* sha256.h */ |