2 * Crypto wrapper functions for NSS
3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
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>
30 static int nss_hash(HASH_HashType type, unsigned int max_res_len,
31 size_t num_elem, const u8 *addr[], const size_t *len,
38 ctx = HASH_Create(type);
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);
52 void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
54 PK11Context *ctx = NULL;
56 SECItem *param = NULL;
57 PK11SymKey *symkey = NULL;
60 u8 pkey[8], next, tmp;
63 /* Add parity bits to the key */
65 for (i = 0; i < 7; i++) {
67 pkey[i] = (tmp >> i) | next | 1;
68 next = tmp << (7 - i);
72 slot = PK11_GetBestSlot(CKM_DES_ECB, NULL);
74 wpa_printf(MSG_ERROR, "NSS: PK11_GetBestSlot failed");
81 symkey = PK11_ImportSymKey(slot, CKM_DES_ECB, PK11_OriginDerive,
82 CKA_ENCRYPT, &item, NULL);
84 wpa_printf(MSG_ERROR, "NSS: PK11_ImportSymKey failed");
88 param = PK11_GenerateNewParam(CKM_DES_ECB, symkey);
90 wpa_printf(MSG_ERROR, "NSS: PK11_GenerateNewParam failed");
94 ctx = PK11_CreateContextBySymKey(CKM_DES_ECB, CKA_ENCRYPT,
97 wpa_printf(MSG_ERROR, "NSS: PK11_CreateContextBySymKey("
98 "CKM_DES_ECB) failed");
102 if (PK11_CipherOp(ctx, cypher, &olen, 8, (void *) clear, 8) !=
104 wpa_printf(MSG_ERROR, "NSS: PK11_CipherOp failed");
110 PK11_DestroyContext(ctx, PR_TRUE);
112 PK11_FreeSymKey(symkey);
114 SECITEM_FreeItem(param, PR_TRUE);
118 int rc4_skip(const u8 *key, size_t keylen, size_t skip,
119 u8 *data, size_t data_len)
125 int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
127 return nss_hash(HASH_AlgMD5, 16, num_elem, addr, len, mac);
131 int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
133 return nss_hash(HASH_AlgSHA1, 20, num_elem, addr, len, mac);
137 int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
140 return nss_hash(HASH_AlgSHA256, 32, num_elem, addr, len, mac);
144 void * aes_encrypt_init(const u8 *key, size_t len)
150 void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
155 void aes_encrypt_deinit(void *ctx)
160 void * aes_decrypt_init(const u8 *key, size_t len)
166 void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
171 void aes_decrypt_deinit(void *ctx)
176 int 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)
185 struct crypto_cipher {
189 struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
190 const u8 *iv, const u8 *key,
197 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
198 u8 *crypt, size_t len)
204 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
205 u8 *plain, size_t len)
211 void crypto_cipher_deinit(struct crypto_cipher *ctx)