blob: fee4195ca4e3ad432e3cbd31124778c2cab85db7 [file] [log] [blame]
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001/*
2 * Crypto wrapper functions for NSS
3 * Copyright (c) 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#include <nspr/prtypes.h>
17#include <nspr/plarenas.h>
18#include <nspr/plhash.h>
19#include <nspr/prtime.h>
20#include <nspr/prinrval.h>
21#include <nspr/prclist.h>
22#include <nspr/prlock.h>
23#include <nss/sechash.h>
24#include <nss/pk11pub.h>
25
26#include "common.h"
27#include "crypto.h"
28
29
30static int nss_hash(HASH_HashType type, unsigned int max_res_len,
31 size_t num_elem, const u8 *addr[], const size_t *len,
32 u8 *mac)
33{
34 HASHContext *ctx;
35 size_t i;
36 unsigned int reslen;
37
38 ctx = HASH_Create(type);
39 if (ctx == NULL)
40 return -1;
41
42 HASH_Begin(ctx);
43 for (i = 0; i < num_elem; i++)
44 HASH_Update(ctx, addr[i], len[i]);
45 HASH_End(ctx, mac, &reslen, max_res_len);
46 HASH_Destroy(ctx);
47
48 return 0;
49}
50
51
52void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
53{
54 PK11Context *ctx = NULL;
55 PK11SlotInfo *slot;
56 SECItem *param = NULL;
57 PK11SymKey *symkey = NULL;
58 SECItem item;
59 int olen;
60 u8 pkey[8], next, tmp;
61 int i;
62
63 /* Add parity bits to the key */
64 next = 0;
65 for (i = 0; i < 7; i++) {
66 tmp = key[i];
67 pkey[i] = (tmp >> i) | next | 1;
68 next = tmp << (7 - i);
69 }
70 pkey[i] = next | 1;
71
72 slot = PK11_GetBestSlot(CKM_DES_ECB, NULL);
73 if (slot == NULL) {
74 wpa_printf(MSG_ERROR, "NSS: PK11_GetBestSlot failed");
75 goto out;
76 }
77
78 item.type = siBuffer;
79 item.data = pkey;
80 item.len = 8;
81 symkey = PK11_ImportSymKey(slot, CKM_DES_ECB, PK11_OriginDerive,
82 CKA_ENCRYPT, &item, NULL);
83 if (symkey == NULL) {
84 wpa_printf(MSG_ERROR, "NSS: PK11_ImportSymKey failed");
85 goto out;
86 }
87
88 param = PK11_GenerateNewParam(CKM_DES_ECB, symkey);
89 if (param == NULL) {
90 wpa_printf(MSG_ERROR, "NSS: PK11_GenerateNewParam failed");
91 goto out;
92 }
93
94 ctx = PK11_CreateContextBySymKey(CKM_DES_ECB, CKA_ENCRYPT,
95 symkey, param);
96 if (ctx == NULL) {
97 wpa_printf(MSG_ERROR, "NSS: PK11_CreateContextBySymKey("
98 "CKM_DES_ECB) failed");
99 goto out;
100 }
101
102 if (PK11_CipherOp(ctx, cypher, &olen, 8, (void *) clear, 8) !=
103 SECSuccess) {
104 wpa_printf(MSG_ERROR, "NSS: PK11_CipherOp failed");
105 goto out;
106 }
107
108out:
109 if (ctx)
110 PK11_DestroyContext(ctx, PR_TRUE);
111 if (symkey)
112 PK11_FreeSymKey(symkey);
113 if (param)
114 SECITEM_FreeItem(param, PR_TRUE);
115}
116
117
118int rc4_skip(const u8 *key, size_t keylen, size_t skip,
119 u8 *data, size_t data_len)
120{
121 return -1;
122}
123
124
125int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
126{
127 return nss_hash(HASH_AlgMD5, 16, num_elem, addr, len, mac);
128}
129
130
131int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
132{
133 return nss_hash(HASH_AlgSHA1, 20, num_elem, addr, len, mac);
134}
135
136
137int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
138 u8 *mac)
139{
140 return nss_hash(HASH_AlgSHA256, 32, num_elem, addr, len, mac);
141}
142
143
144void * aes_encrypt_init(const u8 *key, size_t len)
145{
146 return NULL;
147}
148
149
150void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
151{
152}
153
154
155void aes_encrypt_deinit(void *ctx)
156{
157}
158
159
160void * aes_decrypt_init(const u8 *key, size_t len)
161{
162 return NULL;
163}
164
165
166void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
167{
168}
169
170
171void aes_decrypt_deinit(void *ctx)
172{
173}
174
175
176int crypto_mod_exp(const u8 *base, size_t base_len,
177 const u8 *power, size_t power_len,
178 const u8 *modulus, size_t modulus_len,
179 u8 *result, size_t *result_len)
180{
181 return -1;
182}
183
184
185struct crypto_cipher {
186};
187
188
189struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
190 const u8 *iv, const u8 *key,
191 size_t key_len)
192{
193 return NULL;
194}
195
196
197int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
198 u8 *crypt, size_t len)
199{
200 return -1;
201}
202
203
204int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
205 u8 *plain, size_t len)
206{
207 return -1;
208}
209
210
211void crypto_cipher_deinit(struct crypto_cipher *ctx)
212{
213}