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/*
* Crypto wrapper functions for NSS
* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include <nspr/prtypes.h>
#include <nspr/plarenas.h>
#include <nspr/plhash.h>
#include <nspr/prtime.h>
#include <nspr/prinrval.h>
#include <nspr/prclist.h>
#include <nspr/prlock.h>
#include <nss/sechash.h>
#include <nss/pk11pub.h>
#include "common.h"
#include "crypto.h"
static int nss_hash(HASH_HashType type, unsigned int max_res_len,
size_t num_elem, const u8 *addr[], const size_t *len,
u8 *mac)
{
HASHContext *ctx;
size_t i;
unsigned int reslen;
ctx = HASH_Create(type);
if (ctx == NULL)
return -1;
HASH_Begin(ctx);
for (i = 0; i < num_elem; i++)
HASH_Update(ctx, addr[i], len[i]);
HASH_End(ctx, mac, &reslen, max_res_len);
HASH_Destroy(ctx);
return 0;
}
void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
{
PK11Context *ctx = NULL;
PK11SlotInfo *slot;
SECItem *param = NULL;
PK11SymKey *symkey = NULL;
SECItem item;
int olen;
u8 pkey[8], next, tmp;
int i;
/* Add parity bits to the key */
next = 0;
for (i = 0; i < 7; i++) {
tmp = key[i];
pkey[i] = (tmp >> i) | next | 1;
next = tmp << (7 - i);
}
pkey[i] = next | 1;
slot = PK11_GetBestSlot(CKM_DES_ECB, NULL);
if (slot == NULL) {
wpa_printf(MSG_ERROR, "NSS: PK11_GetBestSlot failed");
goto out;
}
item.type = siBuffer;
item.data = pkey;
item.len = 8;
symkey = PK11_ImportSymKey(slot, CKM_DES_ECB, PK11_OriginDerive,
CKA_ENCRYPT, &item, NULL);
if (symkey == NULL) {
wpa_printf(MSG_ERROR, "NSS: PK11_ImportSymKey failed");
goto out;
}
param = PK11_GenerateNewParam(CKM_DES_ECB, symkey);
if (param == NULL) {
wpa_printf(MSG_ERROR, "NSS: PK11_GenerateNewParam failed");
goto out;
}
ctx = PK11_CreateContextBySymKey(CKM_DES_ECB, CKA_ENCRYPT,
symkey, param);
if (ctx == NULL) {
wpa_printf(MSG_ERROR, "NSS: PK11_CreateContextBySymKey("
"CKM_DES_ECB) failed");
goto out;
}
if (PK11_CipherOp(ctx, cypher, &olen, 8, (void *) clear, 8) !=
SECSuccess) {
wpa_printf(MSG_ERROR, "NSS: PK11_CipherOp failed");
goto out;
}
out:
if (ctx)
PK11_DestroyContext(ctx, PR_TRUE);
if (symkey)
PK11_FreeSymKey(symkey);
if (param)
SECITEM_FreeItem(param, PR_TRUE);
}
int rc4_skip(const u8 *key, size_t keylen, size_t skip,
u8 *data, size_t data_len)
{
return -1;
}
int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
{
return nss_hash(HASH_AlgMD5, 16, num_elem, addr, len, mac);
}
int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
{
return nss_hash(HASH_AlgSHA1, 20, num_elem, addr, len, mac);
}
int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
u8 *mac)
{
return nss_hash(HASH_AlgSHA256, 32, num_elem, addr, len, mac);
}
void * aes_encrypt_init(const u8 *key, size_t len)
{
return NULL;
}
void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
{
}
void aes_encrypt_deinit(void *ctx)
{
}
void * aes_decrypt_init(const u8 *key, size_t len)
{
return NULL;
}
void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
{
}
void aes_decrypt_deinit(void *ctx)
{
}
int crypto_mod_exp(const u8 *base, size_t base_len,
const u8 *power, size_t power_len,
const u8 *modulus, size_t modulus_len,
u8 *result, size_t *result_len)
{
return -1;
}
struct crypto_cipher {
};
struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
const u8 *iv, const u8 *key,
size_t key_len)
{
return NULL;
}
int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
u8 *crypt, size_t len)
{
return -1;
}
int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
u8 *plain, size_t len)
{
return -1;
}
void crypto_cipher_deinit(struct crypto_cipher *ctx)
{
}
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