crypto_internal-rsa.c revision c5ec7f57ead87efa365800228aa0b09a12d9e6c4 
1/*
2 * Crypto wrapper for internal crypto implementation - RSA parts
3 * Copyright (c) 2006-2009, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "includes.h"
10
11#include "common.h"
12#include "crypto.h"
13#include "tls/rsa.h"
14#include "tls/pkcs1.h"
15#include "tls/pkcs8.h"
16
17/* Dummy structures; these are just typecast to struct crypto_rsa_key */
18struct crypto_public_key;
19struct crypto_private_key;
20
21
22struct crypto_public_key * crypto_public_key_import(const u8 *key, size_t len)
23{
24	return (struct crypto_public_key *)
25		crypto_rsa_import_public_key(key, len);
26}
27
28
29struct crypto_private_key * crypto_private_key_import(const u8 *key,
30						      size_t len,
31						      const char *passwd)
32{
33	struct crypto_private_key *res;
34
35	/* First, check for possible PKCS #8 encoding */
36	res = pkcs8_key_import(key, len);
37	if (res)
38		return res;
39
40	if (passwd) {
41		/* Try to parse as encrypted PKCS #8 */
42		res = pkcs8_enc_key_import(key, len, passwd);
43		if (res)
44			return res;
45	}
46
47	/* Not PKCS#8, so try to import PKCS #1 encoded RSA private key */
48	wpa_printf(MSG_DEBUG, "Trying to parse PKCS #1 encoded RSA private "
49		   "key");
50	return (struct crypto_private_key *)
51		crypto_rsa_import_private_key(key, len);
52}
53
54
55struct crypto_public_key * crypto_public_key_from_cert(const u8 *buf,
56						       size_t len)
57{
58	/* No X.509 support in crypto_internal.c */
59	return NULL;
60}
61
62
63int crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key *key,
64					const u8 *in, size_t inlen,
65					u8 *out, size_t *outlen)
66{
67	return pkcs1_encrypt(2, (struct crypto_rsa_key *) key,
68			     0, in, inlen, out, outlen);
69}
70
71
72int crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key *key,
73					 const u8 *in, size_t inlen,
74					 u8 *out, size_t *outlen)
75{
76	return pkcs1_v15_private_key_decrypt((struct crypto_rsa_key *) key,
77					     in, inlen, out, outlen);
78}
79
80
81int crypto_private_key_sign_pkcs1(struct crypto_private_key *key,
82				  const u8 *in, size_t inlen,
83				  u8 *out, size_t *outlen)
84{
85	return pkcs1_encrypt(1, (struct crypto_rsa_key *) key,
86			     1, in, inlen, out, outlen);
87}
88
89
90void crypto_public_key_free(struct crypto_public_key *key)
91{
92	crypto_rsa_free((struct crypto_rsa_key *) key);
93}
94
95
96void crypto_private_key_free(struct crypto_private_key *key)
97{
98	crypto_rsa_free((struct crypto_rsa_key *) key);
99}
100
101
102int crypto_public_key_decrypt_pkcs1(struct crypto_public_key *key,
103				    const u8 *crypt, size_t crypt_len,
104				    u8 *plain, size_t *plain_len)
105{
106	return pkcs1_decrypt_public_key((struct crypto_rsa_key *) key,
107					crypt, crypt_len, plain, plain_len);
108}
109