crypto_internal-rsa.c revision 1f69aa52ea2e0a73ac502565df8c666ee49cab6a 
1/*
2 * Crypto wrapper for internal crypto implementation - RSA parts
3 * Copyright (c) 2006-2009, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15#include "includes.h"
16
17#include "common.h"
18#include "crypto.h"
19#include "tls/rsa.h"
20#include "tls/pkcs1.h"
21#include "tls/pkcs8.h"
22
23/* Dummy structures; these are just typecast to struct crypto_rsa_key */
24struct crypto_public_key;
25struct crypto_private_key;
26
27
28struct crypto_public_key * crypto_public_key_import(const u8 *key, size_t len)
29{
30	return (struct crypto_public_key *)
31		crypto_rsa_import_public_key(key, len);
32}
33
34
35struct crypto_private_key * crypto_private_key_import(const u8 *key,
36						      size_t len,
37						      const char *passwd)
38{
39	struct crypto_private_key *res;
40
41	/* First, check for possible PKCS #8 encoding */
42	res = pkcs8_key_import(key, len);
43	if (res)
44		return res;
45
46	if (passwd) {
47		/* Try to parse as encrypted PKCS #8 */
48		res = pkcs8_enc_key_import(key, len, passwd);
49		if (res)
50			return res;
51	}
52
53	/* Not PKCS#8, so try to import PKCS #1 encoded RSA private key */
54	wpa_printf(MSG_DEBUG, "Trying to parse PKCS #1 encoded RSA private "
55		   "key");
56	return (struct crypto_private_key *)
57		crypto_rsa_import_private_key(key, len);
58}
59
60
61struct crypto_public_key * crypto_public_key_from_cert(const u8 *buf,
62						       size_t len)
63{
64	/* No X.509 support in crypto_internal.c */
65	return NULL;
66}
67
68
69int crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key *key,
70					const u8 *in, size_t inlen,
71					u8 *out, size_t *outlen)
72{
73	return pkcs1_encrypt(2, (struct crypto_rsa_key *) key,
74			     0, in, inlen, out, outlen);
75}
76
77
78int crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key *key,
79					 const u8 *in, size_t inlen,
80					 u8 *out, size_t *outlen)
81{
82	return pkcs1_v15_private_key_decrypt((struct crypto_rsa_key *) key,
83					     in, inlen, out, outlen);
84}
85
86
87int crypto_private_key_sign_pkcs1(struct crypto_private_key *key,
88				  const u8 *in, size_t inlen,
89				  u8 *out, size_t *outlen)
90{
91	return pkcs1_encrypt(1, (struct crypto_rsa_key *) key,
92			     1, in, inlen, out, outlen);
93}
94
95
96void crypto_public_key_free(struct crypto_public_key *key)
97{
98	crypto_rsa_free((struct crypto_rsa_key *) key);
99}
100
101
102void crypto_private_key_free(struct crypto_private_key *key)
103{
104	crypto_rsa_free((struct crypto_rsa_key *) key);
105}
106
107
108int crypto_public_key_decrypt_pkcs1(struct crypto_public_key *key,
109				    const u8 *crypt, size_t crypt_len,
110				    u8 *plain, size_t *plain_len)
111{
112	return pkcs1_decrypt_public_key((struct crypto_rsa_key *) key,
113					crypt, crypt_len, plain, plain_len);
114}
115