/*****************************************************************************
* vlc_md5.h: MD5 hash
*****************************************************************************
- * Copyright (C) 2004-2005 the VideoLAN team
- * $Id$
+ * Copyright © 2004-2011 VLC authors and VideoLAN
*
- * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
- * Sam Hocevar <sam@zoy.org>
+ * Authors: Rémi Denis-Courmont
+ * Rafaël Carré
*
- * 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
+ * This program 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.
*
* 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.
+ * 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 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.
+ * You should have received a copy of the GNU Lesser 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 _VLC_MD5_H
-# define _VLC_MD5_H
+#ifndef VLC_MD5_H
+# define VLC_MD5_H
+
+/**
+ * \file
+ * This file defines functions and structures to compute MD5 digests
+ */
-/*****************************************************************************
- * md5_s: MD5 message structure
- *****************************************************************************
- * This structure stores the static information needed to compute an MD5
- * hash. It has an extra data buffer to allow non-aligned writes.
- *****************************************************************************/
struct md5_s
{
- uint64_t i_bits; /* Total written bits */
- uint32_t p_digest[4]; /* The MD5 digest */
- uint32_t p_data[16]; /* Buffer to cache non-aligned writes */
+ uint32_t A, B, C, D; /* chaining variables */
+ uint32_t nblocks;
+ uint8_t buf[64];
+ int count;
};
-VLC_EXPORT(void, InitMD5, ( struct md5_s * ) );
-VLC_EXPORT(void, AddMD5, ( struct md5_s *, const void *, size_t ) );
-VLC_EXPORT(void, EndMD5, ( struct md5_s * ) );
+VLC_API void InitMD5( struct md5_s * );
+VLC_API void AddMD5( struct md5_s *, const void *, size_t );
+VLC_API void EndMD5( struct md5_s * );
/**
* Returns a char representation of the md5 hash, as shown by UNIX md5 or
static inline char * psz_md5_hash( struct md5_s *md5_s )
{
char *psz = malloc( 33 ); /* md5 string is 32 bytes + NULL character */
- if( !psz ) return NULL;
-
- int i;
- for ( i = 0; i < 4; i++ )
+ if( likely(psz) )
{
- sprintf( &psz[8*i], "%02x%02x%02x%02x",
- md5_s->p_digest[i] & 0xff,
- ( md5_s->p_digest[i] >> 8 ) & 0xff,
- ( md5_s->p_digest[i] >> 16 ) & 0xff,
- md5_s->p_digest[i] >> 24
- );
+ for( int i = 0; i < 16; i++ )
+ sprintf( &psz[2*i], "%02"PRIx8, md5_s->buf[i] );
}
- psz[32] = '\0';
-
return psz;
}