mirror of git://git.gnupg.org/gnupg.git
170 lines
3.6 KiB
C
170 lines
3.6 KiB
C
/* misc.c - utility functions
|
|
* Copyright (C) 1998 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GNUPG.
|
|
*
|
|
* GNUPG 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.
|
|
*
|
|
* GNUPG 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include "util.h"
|
|
#include "cipher.h"
|
|
|
|
|
|
static struct { const char *name; int algo;} pubkey_names[] = {
|
|
{ "RSA", PUBKEY_ALGO_RSA },
|
|
{ "RSA-E", PUBKEY_ALGO_RSA_E },
|
|
{ "RSA-S", PUBKEY_ALGO_RSA_S },
|
|
{ "ELGAMAL", PUBKEY_ALGO_ELGAMAL },
|
|
{ "ELG", PUBKEY_ALGO_ELGAMAL },
|
|
{ "DSA", PUBKEY_ALGO_DSA },
|
|
{NULL} };
|
|
|
|
/* Note: the first string is the one used by ascii armor */
|
|
static struct { const char *name; int algo;} digest_names[] = {
|
|
{ "MD5", DIGEST_ALGO_MD5 },
|
|
{ "SHA1", DIGEST_ALGO_SHA1 },
|
|
{ "SHA-1", DIGEST_ALGO_SHA1 },
|
|
{ "RIPEMD160", DIGEST_ALGO_RMD160 },
|
|
{ "RMD160", DIGEST_ALGO_RMD160 },
|
|
{ "RMD-160", DIGEST_ALGO_RMD160 },
|
|
{ "RIPE-MD-160", DIGEST_ALGO_RMD160 },
|
|
{ "TIGER", DIGEST_ALGO_TIGER },
|
|
{NULL} };
|
|
|
|
|
|
|
|
|
|
|
|
/****************
|
|
* Map a string to the pubkey algo
|
|
*/
|
|
int
|
|
string_to_pubkey_algo( const char *string )
|
|
{
|
|
int i;
|
|
const char *s;
|
|
|
|
for(i=0; (s=pubkey_names[i].name); i++ )
|
|
if( !stricmp( s, string ) )
|
|
return pubkey_names[i].algo;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/****************
|
|
* Map a pubkey algo to a string
|
|
*/
|
|
const char *
|
|
pubkey_algo_to_string( int algo )
|
|
{
|
|
int i;
|
|
|
|
for(i=0; pubkey_names[i].name; i++ )
|
|
if( pubkey_names[i].algo == algo )
|
|
return pubkey_names[i].name;
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
/****************
|
|
* Map a string to the digest algo
|
|
*/
|
|
int
|
|
string_to_digest_algo( const char *string )
|
|
{
|
|
int i;
|
|
const char *s;
|
|
|
|
for(i=0; (s=digest_names[i].name); i++ )
|
|
if( !stricmp( s, string ) )
|
|
return digest_names[i].algo;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/****************
|
|
* Map a digest algo to a string
|
|
*/
|
|
const char *
|
|
digest_algo_to_string( int algo )
|
|
{
|
|
int i;
|
|
|
|
for(i=0; digest_names[i].name; i++ )
|
|
if( digest_names[i].algo == algo )
|
|
return digest_names[i].name;
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
check_pubkey_algo( int algo )
|
|
{
|
|
return check_pubkey_algo2( algo, 0 );
|
|
}
|
|
|
|
/****************
|
|
* a usage of 0 means: don't care
|
|
*/
|
|
int
|
|
check_pubkey_algo2( int algo, unsigned usage )
|
|
{
|
|
switch( algo ) {
|
|
case PUBKEY_ALGO_DSA:
|
|
if( usage & 2 )
|
|
return G10ERR_WR_PUBKEY_ALGO;
|
|
return 0;
|
|
|
|
case PUBKEY_ALGO_ELGAMAL:
|
|
case PUBKEY_ALGO_ELGAMAL_E:
|
|
return 0;
|
|
|
|
#ifdef HAVE_RSA_CIPHER
|
|
case PUBKEY_ALGO_RSA:
|
|
return 0;
|
|
#endif
|
|
default:
|
|
return G10ERR_PUBKEY_ALGO;
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
check_digest_algo( int algo )
|
|
{
|
|
switch( algo ) {
|
|
#ifdef WITH_TIGER_HASH
|
|
case DIGEST_ALGO_TIGER:
|
|
#endif
|
|
case DIGEST_ALGO_MD5:
|
|
case DIGEST_ALGO_RMD160:
|
|
case DIGEST_ALGO_SHA1:
|
|
return 0;
|
|
default:
|
|
return G10ERR_DIGEST_ALGO;
|
|
}
|
|
}
|
|
|
|
|
|
|