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Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +02001/*
2 * Public Key abstraction layer: wrapper functions
3 *
4 * Copyright (C) 2006-2013, Brainspark B.V.
5 *
6 * This file is part of PolarSSL (http://www.polarssl.org)
7 * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
8 *
9 * All rights reserved.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License along
22 * with this program; if not, write to the Free Software Foundation, Inc.,
23 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 */
25
26#include "polarssl/config.h"
27
28#include "polarssl/pk_wrap.h"
29
30#if defined(POLARSSL_RSA_C)
31#include "polarssl/rsa.h"
32#endif
33
34#if defined(POLARSSL_ECP_C)
35#include "polarssl/ecp.h"
36#endif
37
38#if defined(POLARSSL_ECDSA_C)
39#include "polarssl/ecdsa.h"
40#endif
41
42#if defined(POLARSSL_RSA_C)
Manuel Pégourié-Gonnardf18c3e02013-08-12 18:41:18 +020043static int rsa_can_do( pk_type_t type )
44{
45 return( type == POLARSSL_PK_RSA );
46}
47
Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +020048static int rsa_verify_wrap( void *ctx,
49 const unsigned char *hash, const md_info_t *md_info,
50 const unsigned char *sig, size_t sig_len )
51{
52 ((void) sig_len);
53
54 return( rsa_pkcs1_verify( (rsa_context *) ctx,
55 RSA_PUBLIC, md_info->type, 0, hash, sig ) );
56}
57
58const pk_info_t rsa_info = {
59 POLARSSL_PK_RSA,
Manuel Pégourié-Gonnardf18c3e02013-08-12 18:41:18 +020060 rsa_can_do,
Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +020061 rsa_verify_wrap,
62};
63#endif /* POLARSSL_RSA_C */
64
65#if defined(POLARSSL_ECDSA_C)
Manuel Pégourié-Gonnardf18c3e02013-08-12 18:41:18 +020066int ecdsa_can_do( pk_type_t type )
67{
68 return( type == POLARSSL_PK_ECDSA );
69}
70
Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +020071int ecdsa_verify_wrap( void *ctx,
72 const unsigned char *hash, const md_info_t *md_info,
73 const unsigned char *sig, size_t sig_len )
74{
75 return( ecdsa_read_signature( (ecdsa_context *) ctx,
76 hash, md_info->size, sig, sig_len ) );
77}
78
79const pk_info_t ecdsa_info = {
80 POLARSSL_PK_ECDSA,
Manuel Pégourié-Gonnardf18c3e02013-08-12 18:41:18 +020081 ecdsa_can_do,
Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +020082 ecdsa_verify_wrap,
83};
84#endif /* POLARSSL_ECDSA_C */
85
86#if defined(POLARSSL_ECP_C)
Manuel Pégourié-Gonnard835eb592013-08-12 18:51:26 +020087/*
88 * Generic EC key
89 */
Manuel Pégourié-Gonnardf18c3e02013-08-12 18:41:18 +020090static int eckey_can_do( pk_type_t type )
91{
92 return( type == POLARSSL_PK_ECKEY ||
93 type == POLARSSL_PK_ECKEY_DH ||
94 type == POLARSSL_PK_ECDSA );
95}
96
Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +020097static int eckey_verify_wrap( void *ctx,
98 const unsigned char *hash, const md_info_t *md_info,
99 const unsigned char *sig, size_t sig_len )
100{
101#if !defined(POLARSSL_ECDSA_C)
102 ((void) ctx);
103 ((void) hash);
104 ((void) md_info);
105 ((void) sig);
106 ((void) sig_len);
107
108 return( POLARSSL_ERR_PK_TYPE_MISMATCH );
109#else
110 int ret;
111 ecdsa_context ecdsa;
112
113 ecdsa_init( &ecdsa );
114
115 ret = ecdsa_from_keypair( &ecdsa, ctx ) ||
116 ecdsa_verify_wrap( &ecdsa, hash, md_info, sig, sig_len );
117
118 ecdsa_free( &ecdsa );
119
120 return( ret );
121#endif /* POLARSSL_ECDSA_C */
122}
123
124const pk_info_t eckey_info = {
125 POLARSSL_PK_ECKEY,
Manuel Pégourié-Gonnardf18c3e02013-08-12 18:41:18 +0200126 eckey_can_do,
Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +0200127 eckey_verify_wrap,
128};
Manuel Pégourié-Gonnard835eb592013-08-12 18:51:26 +0200129
130/*
131 * EC key resticted to ECDH
132 */
133static int eckeydh_can_do( pk_type_t type )
134{
135 return( type == POLARSSL_PK_ECKEY ||
136 type == POLARSSL_PK_ECKEY_DH );
137}
138
139static int eckeydh_verify_wrap( void *ctx,
140 const unsigned char *hash, const md_info_t *md_info,
141 const unsigned char *sig, size_t sig_len )
142{
143 ((void) ctx);
144 ((void) hash);
145 ((void) md_info);
146 ((void) sig);
147 ((void) sig_len);
148
149 return( POLARSSL_ERR_PK_TYPE_MISMATCH );
150}
151
152const pk_info_t eckeydh_info = {
153 POLARSSL_PK_ECKEY_DH,
154 eckeydh_can_do,
155 eckeydh_verify_wrap,
156};
Manuel Pégourié-Gonnardd73b3c12013-08-12 17:06:05 +0200157#endif /* POLARSSL_ECP_C */