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 */
18 struct crypto_public_key;
19 struct crypto_private_key;
20
21
crypto_public_key_import(const u8 * key,size_t len)22 struct 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
29 struct crypto_public_key *
crypto_public_key_import_parts(const u8 * n,size_t n_len,const u8 * e,size_t e_len)30 crypto_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
crypto_private_key_import(const u8 * key,size_t len,const char * passwd)38 struct 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
crypto_public_key_from_cert(const u8 * buf,size_t len)64 struct 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
crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)72 int 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
crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)81 int 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
crypto_private_key_sign_pkcs1(struct crypto_private_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)90 int 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
crypto_public_key_free(struct crypto_public_key * key)99 void crypto_public_key_free(struct crypto_public_key *key)
100 {
101 crypto_rsa_free((struct crypto_rsa_key *) key);
102 }
103
104
crypto_private_key_free(struct crypto_private_key * key)105 void crypto_private_key_free(struct crypto_private_key *key)
106 {
107 crypto_rsa_free((struct crypto_rsa_key *) key);
108 }
109
110
crypto_public_key_decrypt_pkcs1(struct crypto_public_key * key,const u8 * crypt,size_t crypt_len,u8 * plain,size_t * plain_len)111 int 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
