crypto_nss.c
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00001 /*
00002  * Crypto wrapper functions for NSS
00003  * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  */
00014 
00015 #include "includes.h"
00016 #include <nspr/prtypes.h>
00017 #include <nspr/plarenas.h>
00018 #include <nspr/plhash.h>
00019 #include <nspr/prtime.h>
00020 #include <nspr/prinrval.h>
00021 #include <nspr/prclist.h>
00022 #include <nspr/prlock.h>
00023 #include <nss/sechash.h>
00024 #include <nss/pk11pub.h>
00025 
00026 #include "common.h"
00027 #include "crypto.h"
00028 
00029 
00030 static int nss_hash(HASH_HashType type, unsigned int max_res_len,
00031                     size_t num_elem, const u8 *addr[], const size_t *len,
00032                     u8 *mac)
00033 {
00034         HASHContext *ctx;
00035         size_t i;
00036         unsigned int reslen;
00037 
00038         ctx = HASH_Create(type);
00039         if (ctx == NULL)
00040                 return -1;
00041 
00042         HASH_Begin(ctx);
00043         for (i = 0; i < num_elem; i++)
00044                 HASH_Update(ctx, addr[i], len[i]);
00045         HASH_End(ctx, mac, &reslen, max_res_len);
00046         HASH_Destroy(ctx);
00047 
00048         return 0;
00049 }
00050 
00051 
00052 void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
00053 {
00054         PK11Context *ctx = NULL;
00055         PK11SlotInfo *slot;
00056         SECItem *param = NULL;
00057         PK11SymKey *symkey = NULL;
00058         SECItem item;
00059         int olen;
00060         u8 pkey[8], next, tmp;
00061         int i;
00062 
00063         /* Add parity bits to the key */
00064         next = 0;
00065         for (i = 0; i < 7; i++) {
00066                 tmp = key[i];
00067                 pkey[i] = (tmp >> i) | next | 1;
00068                 next = tmp << (7 - i);
00069         }
00070         pkey[i] = next | 1;
00071 
00072         slot = PK11_GetBestSlot(CKM_DES_ECB, NULL);
00073         if (slot == NULL) {
00074                 wpa_printf(MSG_ERROR, "NSS: PK11_GetBestSlot failed");
00075                 goto out;
00076         }
00077 
00078         item.type = siBuffer;
00079         item.data = pkey;
00080         item.len = 8;
00081         symkey = PK11_ImportSymKey(slot, CKM_DES_ECB, PK11_OriginDerive,
00082                                    CKA_ENCRYPT, &item, NULL);
00083         if (symkey == NULL) {
00084                 wpa_printf(MSG_ERROR, "NSS: PK11_ImportSymKey failed");
00085                 goto out;
00086         }
00087 
00088         param = PK11_GenerateNewParam(CKM_DES_ECB, symkey);
00089         if (param == NULL) {
00090                 wpa_printf(MSG_ERROR, "NSS: PK11_GenerateNewParam failed");
00091                 goto out;
00092         }
00093 
00094         ctx = PK11_CreateContextBySymKey(CKM_DES_ECB, CKA_ENCRYPT,
00095                                          symkey, param);
00096         if (ctx == NULL) {
00097                 wpa_printf(MSG_ERROR, "NSS: PK11_CreateContextBySymKey("
00098                            "CKM_DES_ECB) failed");
00099                 goto out;
00100         }
00101 
00102         if (PK11_CipherOp(ctx, cypher, &olen, 8, (void *) clear, 8) !=
00103             SECSuccess) {
00104                 wpa_printf(MSG_ERROR, "NSS: PK11_CipherOp failed");
00105                 goto out;
00106         }
00107 
00108 out:
00109         if (ctx)
00110                 PK11_DestroyContext(ctx, PR_TRUE);
00111         if (symkey)
00112                 PK11_FreeSymKey(symkey);
00113         if (param)
00114                 SECITEM_FreeItem(param, PR_TRUE);
00115 }
00116 
00117 
00118 int rc4_skip(const u8 *key, size_t keylen, size_t skip,
00119              u8 *data, size_t data_len)
00120 {
00121         return -1;
00122 }
00123 
00124 
00125 int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
00126 {
00127         return nss_hash(HASH_AlgMD5, 16, num_elem, addr, len, mac);
00128 }
00129 
00130 
00131 int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
00132 {
00133         return nss_hash(HASH_AlgSHA1, 20, num_elem, addr, len, mac);
00134 }
00135 
00136 
00137 int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
00138                   u8 *mac)
00139 {
00140         return nss_hash(HASH_AlgSHA256, 32, num_elem, addr, len, mac);
00141 }
00142 
00143 
00144 void * aes_encrypt_init(const u8 *key, size_t len)
00145 {
00146         return NULL;
00147 }
00148 
00149 
00150 void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
00151 {
00152 }
00153 
00154 
00155 void aes_encrypt_deinit(void *ctx)
00156 {
00157 }
00158 
00159 
00160 void * aes_decrypt_init(const u8 *key, size_t len)
00161 {
00162         return NULL;
00163 }
00164 
00165 
00166 void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
00167 {
00168 }
00169 
00170 
00171 void aes_decrypt_deinit(void *ctx)
00172 {
00173 }
00174 
00175 
00176 int crypto_mod_exp(const u8 *base, size_t base_len,
00177                    const u8 *power, size_t power_len,
00178                    const u8 *modulus, size_t modulus_len,
00179                    u8 *result, size_t *result_len)
00180 {
00181         return -1;
00182 }
00183 
00184 
00185 struct crypto_cipher {
00186 };
00187 
00188 
00189 struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
00190                                           const u8 *iv, const u8 *key,
00191                                           size_t key_len)
00192 {
00193         return NULL;
00194 }
00195 
00196 
00197 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
00198                           u8 *crypt, size_t len)
00199 {
00200         return -1;
00201 }
00202 
00203 
00204 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
00205                           u8 *plain, size_t len)
00206 {
00207         return -1;
00208 }
00209 
00210 
00211 void crypto_cipher_deinit(struct crypto_cipher *ctx)
00212 {
00213 }


wpa_supplicant_node
Author(s): Package maintained by Blaise Gassend
autogenerated on Thu Apr 24 2014 15:33:19