/*
* COPYRIGHT (c) International Business Machines Corp. 2001-2017
*
* This program is provided under the terms of the Common Public License,
* version 1.0 (CPL-1.0). Any use, reproduction or distribution for this
* software constitutes recipient's acceptance of CPL-1.0 terms which can be
* found in the file LICENSE file or at
* https://opensource.org/licenses/cpl1.0.php
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <openssl/des.h>
#include <openssl/aes.h>
#include <fcntl.h>
#include "pkcs11types.h"
#include "p11util.h"
#include "defs.h"
#include "host_defs.h"
#include "h_extern.h"
#include "trace.h"
#include "sw_crypt.h"
CK_RV sw_des3_cbc(CK_BYTE *in_data,
CK_ULONG in_data_len,
CK_BYTE *out_data,
CK_ULONG *out_data_len,
CK_BYTE *init_v, CK_BYTE *key_value, CK_BYTE encrypt)
{
DES_key_schedule des_key1;
DES_key_schedule des_key2;
DES_key_schedule des_key3;
const_DES_cblock key_SSL1, key_SSL2, key_SSL3;
DES_cblock ivec;
// the des decrypt will only fail if the data length is not evenly divisible
// by DES_BLOCK_SIZE
if (in_data_len % DES_BLOCK_SIZE) {
TRACE_ERROR("%s\n", ock_err(ERR_DATA_LEN_RANGE));
return CKR_DATA_LEN_RANGE;
}
// The key as passed in is a 24 byte string containing 3 keys
// pick it apart and create the key schedules
memcpy(&key_SSL1, key_value, (size_t) 8);
memcpy(&key_SSL2, key_value + 8, (size_t) 8);
memcpy(&key_SSL3, key_value + 16, (size_t) 8);
DES_set_key_unchecked(&key_SSL1, &des_key1);
DES_set_key_unchecked(&key_SSL2, &des_key2);
DES_set_key_unchecked(&key_SSL3, &des_key3);
memcpy(ivec, init_v, sizeof(ivec));
// Encrypt or decrypt the data
if (encrypt) {
DES_ede3_cbc_encrypt(in_data,
out_data,
in_data_len,
&des_key1,
&des_key2, &des_key3, &ivec, DES_ENCRYPT);
*out_data_len = in_data_len;
} else {
DES_ede3_cbc_encrypt(in_data,
out_data,
in_data_len,
&des_key1,
&des_key2, &des_key3, &ivec, DES_DECRYPT);
*out_data_len = in_data_len;
}
return CKR_OK;
}
CK_RV sw_aes_cbc(CK_BYTE *in_data,
CK_ULONG in_data_len,
CK_BYTE *out_data,
CK_ULONG *out_data_len,
CK_BYTE *init_v, CK_BYTE *key_value, CK_ULONG keylen,
CK_BYTE encrypt)
{
AES_KEY aes_key;
UNUSED(out_data_len); //XXX can this parameter be removed ?
memset(&aes_key, 0, sizeof(aes_key));
// the aes decrypt will only fail if the data length is not evenly divisible
// by AES_BLOCK_SIZE
if (in_data_len % AES_BLOCK_SIZE) {
TRACE_ERROR("%s\n", ock_err(ERR_DATA_LEN_RANGE));
return CKR_DATA_LEN_RANGE;
}
// Encrypt or decrypt the data
if (encrypt) {
AES_set_encrypt_key(key_value, keylen * 8, &aes_key);
AES_cbc_encrypt(in_data, out_data, in_data_len, &aes_key,
init_v, AES_ENCRYPT);
} else {
AES_set_decrypt_key(key_value, keylen * 8, &aes_key);
AES_cbc_encrypt(in_data, out_data, in_data_len, &aes_key,
init_v, AES_DECRYPT);
}
return CKR_OK;
}