mirror of
git://git.gnupg.org/gnupg.git
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163 lines
3.3 KiB
C
163 lines
3.3 KiB
C
/* misc.c - utility functions
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* Copyright (C) 1998 Free Software Foundation, Inc.
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*
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* This file is part of GNUPG.
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*
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* GNUPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GNUPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "util.h"
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#include "cipher.h"
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static struct { const char *name; int algo;} pubkey_names[] = {
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{ "RSA", PUBKEY_ALGO_RSA },
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{ "RSA-E", PUBKEY_ALGO_RSA_E },
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{ "RSA-S", PUBKEY_ALGO_RSA_S },
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{ "ELGAMAL", PUBKEY_ALGO_ELGAMAL },
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{ "ELG", PUBKEY_ALGO_ELGAMAL },
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{ "DSA", PUBKEY_ALGO_DSA },
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{NULL} };
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static struct { const char *name; int algo;} digest_names[] = {
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{ "MD5", DIGEST_ALGO_MD5 },
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{ "SHA1", DIGEST_ALGO_SHA1 },
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{ "SHA-1", DIGEST_ALGO_SHA1 },
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{ "RMD160", DIGEST_ALGO_RMD160 },
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{ "RMD-160", DIGEST_ALGO_RMD160 },
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{ "RIPE-MD-160", DIGEST_ALGO_RMD160 },
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{NULL} };
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/****************
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* Map a string to the pubkey algo
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*/
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int
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string_to_pubkey_algo( const char *string )
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{
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int i;
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const char *s;
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for(i=0; (s=pubkey_names[i].name); i++ )
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if( !stricmp( s, string ) )
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return pubkey_names[i].algo;
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return 0;
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}
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/****************
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* Map a pubkey algo to a string
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*/
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const char *
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pubkey_algo_to_string( int algo )
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{
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int i;
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for(i=0; pubkey_names[i].name; i++ )
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if( pubkey_names[i].algo == algo )
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return pubkey_names[i].name;
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return NULL;
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}
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/****************
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* Map a string to the digest algo
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*/
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int
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string_to_digest_algo( const char *string )
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{
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int i;
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const char *s;
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for(i=0; (s=digest_names[i].name); i++ )
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if( !stricmp( s, string ) )
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return digest_names[i].algo;
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return 0;
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}
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/****************
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* Map a digest algo to a string
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*/
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const char *
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digest_algo_to_string( int algo )
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{
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int i;
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for(i=0; digest_names[i].name; i++ )
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if( digest_names[i].algo == algo )
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return digest_names[i].name;
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return NULL;
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}
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int
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check_pubkey_algo( int algo )
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{
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return check_pubkey_algo2( algo, 0 );
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}
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/****************
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* a usage of 0 means: don't care
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*/
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int
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check_pubkey_algo2( int algo, unsigned usage )
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{
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switch( algo ) {
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case PUBKEY_ALGO_DSA:
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if( usage & 2 )
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return G10ERR_WR_PUBKEY_ALGO;
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return 0;
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case PUBKEY_ALGO_ELGAMAL:
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return 0;
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#ifdef HAVE_RSA_CIPHER
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case PUBKEY_ALGO_RSA:
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return 0;
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#endif
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default:
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return G10ERR_PUBKEY_ALGO;
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}
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}
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int
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check_digest_algo( int algo )
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{
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switch( algo ) {
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case DIGEST_ALGO_MD5:
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case DIGEST_ALGO_RMD160:
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case DIGEST_ALGO_SHA1:
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return 0;
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default:
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return G10ERR_DIGEST_ALGO;
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}
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}
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