1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* rsa.c
* Copyright (c) 1997 by Werner Koch (dd9jn)
*
* This file is part of G10.
*
* G10 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.
*
* G10 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
RSA_public_key pkey;
assert( enc->pubkey_algo == PUBKEY_ALGO_RSA );
keyid_from_pkc( pkc, enc->keyid );
enc->d.rsa.rsa_integer = encode_session_key( dek,
mpi_get_nbits(pkc->d.rsa.rsa_n) );
pkey.n = pkc->d.rsa.rsa_n;
pkey.e = pkc->d.rsa.rsa_e;
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, &pkey);
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
log_bug(NULL);
#endif/* ! HAVE_RSA_CIPHER*/
}
void
g10_rsa_sign( PKT_secret_cert *skc, PKT_signature *sig, MD_HANDLE *md )
{
#ifdef HAVE_RSA_CIPHER
RSA_secret_key skey;
byte *dp;
assert( sig->pubkey_algo == PUBKEY_ALGO_RSA );
dp = md_final( md );
keyid_from_skc( skc, sig->keyid );
sig->d.rsa.digest_algo = md->algo;
sig->d.rsa.digest_start[0] = dp[0];
sig->d.rsa.digest_start[1] = dp[1];
sig->d.rsa.rsa_integer =
encode_md_value( md, mpi_get_nbits(skc->d.rsa.rsa_n));
skey.e = skc->d.rsa.rsa_e;
skey.n = skc->d.rsa.rsa_n;
skey.p = skc->d.rsa.rsa_p;
skey.q = skc->d.rsa.rsa_q;
skey.d = skc->d.rsa.rsa_d;
skey.u = skc->d.rsa.rsa_u;
rsa_secret( sig->d.rsa.rsa_integer, sig->d.rsa.rsa_integer, &skey);
memset( &skey, 0, sizeof skey );
if( opt.verbose ) {
char *ustr = get_user_id_string( sig->keyid );
log_info("RSA signature from: %s\n", ustr );
m_free(ustr);
}
#else
log_bug(NULL);
#endif/* ! HAVE_RSA_CIPHER*/
}
|
