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/* md.c
* Copyright (C) 2002 Timo Schulz
*
* This file is part of OpenCDK.
*
* OpenCDK 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.
*
* OpenCDK 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 OpenCDK; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdio.h>
#include "opencdk.h"
#include "main.h"
#include "md.h"
struct cdk_md_hd_s {
gcry_md_hd_t hd;
int algo;
};
inline
static int cdk_md_to_gcry( int algo)
{
switch(algo) {
case CDK_MD_MD5:
return GCRY_MD_MD5;
case CDK_MD_SHA1:
return GCRY_MD_SHA1;
case CDK_MD_RMD160:
return GCRY_MD_RMD160;
default:
return -1;
}
}
/* flags will be passed to gcrypt as is.
*/
cdk_md_hd_t
cdk_md_open( int algo, unsigned int flags )
{
cdk_md_hd_t hd;
gcry_error_t err;
hd = cdk_calloc( 1, sizeof * hd );
if( !hd )
return NULL;
hd->algo = algo;
err = gcry_md_open( &hd->hd, cdk_md_to_gcry( algo), flags);
if (err) {
cdk_free( hd );
return NULL;
}
return hd;
}
void
cdk_md_close( cdk_md_hd_t hd )
{
if( hd ) {
gcry_md_close( hd->hd);
cdk_free( hd );
}
}
int
cdk_md_test_algo( int algo )
{
return gcry_md_test_algo( cdk_md_to_gcry(algo));
}
void
cdk_md_write( cdk_md_hd_t hd, const void * buf, size_t buflen )
{
if( hd ) {
gcry_md_write( hd->hd, (byte *)buf, buflen );
}
}
void
cdk_md_putc( cdk_md_hd_t hd, int c )
{
if (hd) {
gcry_md_putc( hd->hd, c);
}
}
int
cdk_md_final( cdk_md_hd_t hd )
{
if( hd ) {
return gcry_md_final(hd->hd);
}
return CDK_Inv_Value;
}
byte *
cdk_md_read( cdk_md_hd_t hd, int algo )
{
int _algo;
if (algo==0) _algo = 0;
else _algo = cdk_md_to_gcry(algo);
if (hd) {
return gcry_md_read( hd->hd, _algo);
}
return NULL;
}
cdk_md_hd_t
cdk_md_copy( cdk_md_hd_t hd )
{
cdk_md_hd_t new;
gcry_error_t err;
new = cdk_calloc( 1, sizeof * hd );
if( !new )
return NULL;
err = gcry_md_copy( &new->hd, hd->hd);
if( err) {
cdk_free( new);
return NULL;
}
new->algo = hd->algo;
return new;
}
int
cdk_md_get_algo_dlen( int algo )
{
return gcry_md_get_algo_dlen( cdk_md_to_gcry( algo ));
}
int
cdk_md_get_asnoid( int algo, byte * buf, size_t *r_asnlen )
{
return gcry_md_get_asnoid( cdk_md_to_gcry(algo), buf, r_asnlen);
}
int
cdk_md_reset( cdk_md_hd_t hd )
{
if( hd ) {
gcry_md_reset( hd->hd );
return 0;
}
return CDK_Inv_Value;
}
int
cdk_md_get_algo( cdk_md_hd_t hd )
{
if( hd )
return hd->algo;
return 0;
}
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