mirror of
git://git.gnupg.org/gnupg.git
synced 2024-11-10 21:38:50 +01:00
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/* rsa.c - glue code for RSA cipher
|
|
* 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 <assert.h>
|
|
|
|
#include "options.h"
|
|
#include "packet.h"
|
|
#include "errors.h"
|
|
#include "iobuf.h"
|
|
#include "keydb.h"
|
|
#include "memory.h"
|
|
#include "util.h"
|
|
#include "main.h"
|
|
|
|
void
|
|
g10_rsa_encrypt( PKT_public_cert *pkc, PKT_pubkey_enc *enc, DEK *dek )
|
|
{
|
|
#ifdef HAVE_RSA_CIPHER
|
|
assert( is_RSA(enc->pubkey_algo) );
|
|
|
|
keyid_from_pkc( pkc, enc->keyid );
|
|
enc->d.rsa.rsa_integer = encode_session_key( dek,
|
|
mpi_get_nbits(pkc->d.rsa.rsa_n) );
|
|
if( DBG_CIPHER )
|
|
log_mpidump("Plain DEK frame: ", enc->d.rsa.rsa_integer);
|
|
rsa_public( enc->d.rsa.rsa_integer, enc->d.rsa.rsa_integer, &pkc->d.rsa);
|
|
if( DBG_CIPHER )
|
|
log_mpidump("Encry DEK frame: ", enc->d.rsa.rsa_integer);
|
|
if( opt.verbose ) {
|
|
char *ustr = get_user_id_string( enc->keyid );
|
|
log_info("RSA encrypted for: %s\n", ustr );
|
|
m_free(ustr);
|
|
}
|
|
#else
|
|
BUG();
|
|
#endif/* ! HAVE_RSA_CIPHER*/
|
|
}
|
|
|
|
|
|
void
|
|
g10_rsa_sign( PKT_secret_cert *skc, PKT_signature *sig,
|
|
MD_HANDLE md, int digest_algo )
|
|
{
|
|
#ifdef HAVE_RSA_CIPHER
|
|
byte *dp;
|
|
|
|
assert( is_RSA(sig->pubkey_algo) );
|
|
if( !digest_algo )
|
|
digest_algo = md_get_algo(md);
|
|
|
|
dp = md_read( md, digest_algo );
|
|
sig->digest_algo = digest_algo;
|
|
sig->digest_start[0] = dp[0];
|
|
sig->digest_start[1] = dp[1];
|
|
sig->d.rsa.rsa_integer =
|
|
encode_md_value( md, digest_algo, mpi_get_nbits(skc->d.rsa.rsa_n));
|
|
rsa_secret( sig->d.rsa.rsa_integer, sig->d.rsa.rsa_integer, &skc->d.rsa );
|
|
if( opt.verbose ) {
|
|
char *ustr = get_user_id_string( sig->keyid );
|
|
log_info("RSA signature from: %s\n", ustr );
|
|
m_free(ustr);
|
|
}
|
|
#else
|
|
BUG();
|
|
#endif/* ! HAVE_RSA_CIPHER*/
|
|
}
|
|
|