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
crypto_private_key_import(const u8 * key,size_t len,const char * passwd)29 struct 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
crypto_public_key_from_cert(const u8 * buf,size_t len)55 struct 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
crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)63 int 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
crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)72 int 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
crypto_private_key_sign_pkcs1(struct crypto_private_key * key,const u8 * in,size_t inlen,u8 * out,size_t * outlen)81 int 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
crypto_public_key_free(struct crypto_public_key * key)90 void crypto_public_key_free(struct crypto_public_key *key)
91 {
92 crypto_rsa_free((struct crypto_rsa_key *) key);
93 }
94
95
crypto_private_key_free(struct crypto_private_key * key)96 void crypto_private_key_free(struct crypto_private_key *key)
97 {
98 crypto_rsa_free((struct crypto_rsa_key *) key);
99 }
100
101
crypto_public_key_decrypt_pkcs1(struct crypto_public_key * key,const u8 * crypt,size_t crypt_len,u8 * plain,size_t * plain_len)102 int 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