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_public_key *
30crypto_public_key_import_parts(const u8 *n, size_t n_len,
31			       const u8 *e, size_t e_len)
32{
33	return (struct crypto_public_key *)
34		crypto_rsa_import_public_key_parts(n, n_len, e, e_len);
35}
36
37
38struct crypto_private_key * crypto_private_key_import(const u8 *key,
39						      size_t len,
40						      const char *passwd)
41{
42	struct crypto_private_key *res;
43
44	/* First, check for possible PKCS #8 encoding */
45	res = pkcs8_key_import(key, len);
46	if (res)
47		return res;
48
49	if (passwd) {
50		/* Try to parse as encrypted PKCS #8 */
51		res = pkcs8_enc_key_import(key, len, passwd);
52		if (res)
53			return res;
54	}
55
56	/* Not PKCS#8, so try to import PKCS #1 encoded RSA private key */
57	wpa_printf(MSG_DEBUG, "Trying to parse PKCS #1 encoded RSA private "
58		   "key");
59	return (struct crypto_private_key *)
60		crypto_rsa_import_private_key(key, len);
61}
62
63
64struct crypto_public_key * crypto_public_key_from_cert(const u8 *buf,
65						       size_t len)
66{
67	/* No X.509 support in crypto_internal.c */
68	return NULL;
69}
70
71
72int crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key *key,
73					const u8 *in, size_t inlen,
74					u8 *out, size_t *outlen)
75{
76	return pkcs1_encrypt(2, (struct crypto_rsa_key *) key,
77			     0, in, inlen, out, outlen);
78}
79
80
81int crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key *key,
82					 const u8 *in, size_t inlen,
83					 u8 *out, size_t *outlen)
84{
85	return pkcs1_v15_private_key_decrypt((struct crypto_rsa_key *) key,
86					     in, inlen, out, outlen);
87}
88
89
90int crypto_private_key_sign_pkcs1(struct crypto_private_key *key,
91				  const u8 *in, size_t inlen,
92				  u8 *out, size_t *outlen)
93{
94	return pkcs1_encrypt(1, (struct crypto_rsa_key *) key,
95			     1, in, inlen, out, outlen);
96}
97
98
99void crypto_public_key_free(struct crypto_public_key *key)
100{
101	crypto_rsa_free((struct crypto_rsa_key *) key);
102}
103
104
105void crypto_private_key_free(struct crypto_private_key *key)
106{
107	crypto_rsa_free((struct crypto_rsa_key *) key);
108}
109
110
111int crypto_public_key_decrypt_pkcs1(struct crypto_public_key *key,
112				    const u8 *crypt, size_t crypt_len,
113				    u8 *plain, size_t *plain_len)
114{
115	return pkcs1_decrypt_public_key((struct crypto_rsa_key *) key,
116					crypt, crypt_len, plain, plain_len);
117}
118