From ff88228abde9c288b3e08f5090a1ff3941fdc018 Mon Sep 17 00:00:00 2001 From: Dan McGee Date: Thu, 11 Aug 2011 15:33:05 -0500 Subject: Add sha2 (sha256) routines from PolarSSL Signed-off-by: Dan McGee --- lib/libalpm/sha2.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 lib/libalpm/sha2.h (limited to 'lib/libalpm/sha2.h') diff --git a/lib/libalpm/sha2.h b/lib/libalpm/sha2.h new file mode 100644 index 00000000..887b9c60 --- /dev/null +++ b/lib/libalpm/sha2.h @@ -0,0 +1,65 @@ +/* + * SHA-224 and SHA-256 cryptographic hash function + * + * Copyright (C) 2006-2010, Brainspark B.V. + * + * This file is part of PolarSSL (http://www.polarssl.org) + * Lead Maintainer: Paul Bakker + * + * All rights reserved. + * + * 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 of the License, 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, see . + */ +#ifndef _SHA2_H +#define _SHA2_H + +#include + +/** + * \brief SHA-256 context structure + */ +typedef struct +{ + unsigned long total[2]; /*!< number of bytes processed */ + unsigned long state[8]; /*!< intermediate digest state */ + unsigned char buffer[64]; /*!< data block being processed */ + + int is224; /*!< 0 => SHA-256, else SHA-224 */ +} +sha2_context; + +/** + * \brief Output = SHA-256( input buffer ) + * + * \param input buffer holding the data + * \param ilen length of the input data + * \param output SHA-224/256 checksum result + * \param is224 0 = use SHA256, 1 = use SHA224 + */ +void sha2( const unsigned char *input, size_t ilen, + unsigned char output[32], int is224 ); + +/** + * \brief Output = SHA-256( file contents ) + * + * \param path input file name + * \param output SHA-224/256 checksum result + * \param is224 0 = use SHA256, 1 = use SHA224 + * + * \return 0 if successful, 1 if fopen failed, + * or 2 if fread failed + */ +int sha2_file( const char *path, unsigned char output[32], int is224 ); + +#endif /* sha2.h */ -- cgit v1.2.3-24-g4f1b