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/bignum.h"
21 #include "tls/pkcs1.h"
22 #include "tls/pkcs8.h"
23
24 /* Dummy structures; these are just typecast to struct crypto_rsa_key */
25 struct crypto_public_key;
26 struct crypto_private_key;
27
28
crypto_public_key_import(const u8 * key,size_t len)29 struct crypto_public_key * crypto_public_key_import(const u8 *key, size_t len)
30 {
31 return (struct crypto_public_key *)
32 crypto_rsa_import_public_key(key, len);
33 }
34
35
crypto_private_key_import(const u8 * key,size_t len,const char * passwd)36 struct crypto_private_key * crypto_private_key_import(const u8 *key,
37 size_t len,
38 const char *passwd)
39 {
40 struct crypto_private_key *res;
41
42 /* First, check for possible PKCS #8 encoding */
43 res = pkcs8_key_import(key, len);
44 if (res)
45 return res;
46
47 if (passwd) {
48 /* Try to parse as encrypted PKCS #8 */
49 res = pkcs8_enc_key_import(key, len, passwd);
50 if (res)
51 return res;
52 }
53
54 /* Not PKCS#8, so try to import PKCS #1 encoded RSA private key */
55 wpa_printf(MSG_DEBUG, "Trying to parse PKCS #1 encoded RSA private "
56 "key");
57 return (struct crypto_private_key *)
58 crypto_rsa_import_private_key(key, len);
59 }
60
61
crypto_public_key_from_cert(const u8 * buf,size_t len)62 struct crypto_public_key * crypto_public_key_from_cert(const u8 *buf,
63 size_t len)
64 {
65 /* No X.509 support in crypto_internal.c */
66 return NULL;
67 }
68
69
crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)70 int crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key *key,
71 const u8 *in, size_t inlen,
72 u8 *out, size_t *outlen)
73 {
74 return pkcs1_encrypt(2, (struct crypto_rsa_key *) key,
75 0, in, inlen, out, outlen);
76 }
77
78
crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)79 int crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key *key,
80 const u8 *in, size_t inlen,
81 u8 *out, size_t *outlen)
82 {
83 return pkcs1_v15_private_key_decrypt((struct crypto_rsa_key *) key,
84 in, inlen, out, outlen);
85 }
86
87
crypto_private_key_sign_pkcs1(struct crypto_private_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)88 int crypto_private_key_sign_pkcs1(struct crypto_private_key *key,
89 const u8 *in, size_t inlen,
90 u8 *out, size_t *outlen)
91 {
92 return pkcs1_encrypt(1, (struct crypto_rsa_key *) key,
93 1, in, inlen, out, outlen);
94 }
95
96
crypto_public_key_free(struct crypto_public_key * key)97 void crypto_public_key_free(struct crypto_public_key *key)
98 {
99 crypto_rsa_free((struct crypto_rsa_key *) key);
100 }
101
102
crypto_private_key_free(struct crypto_private_key * key)103 void crypto_private_key_free(struct crypto_private_key *key)
104 {
105 crypto_rsa_free((struct crypto_rsa_key *) key);
106 }
107
108
crypto_public_key_decrypt_pkcs1(struct crypto_public_key * key,const u8 * crypt,size_t crypt_len,u8 * plain,size_t * plain_len)109 int crypto_public_key_decrypt_pkcs1(struct crypto_public_key *key,
110 const u8 *crypt, size_t crypt_len,
111 u8 *plain, size_t *plain_len)
112 {
113 return pkcs1_decrypt_public_key((struct crypto_rsa_key *) key,
114 crypt, crypt_len, plain, plain_len);
115 }
116