+++ /dev/null
-/*
- * AES-128 CBC
- *
- * Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "aes.h"
-#include "aes_wrap.h"
-
-/**
- * aes_128_cbc_encrypt - AES-128 CBC encryption
- * @key: Encryption key
- * @iv: Encryption IV for CBC mode (16 bytes)
- * @data: Data to encrypt in-place
- * @data_len: Length of data in bytes (must be divisible by 16)
- * Returns: 0 on success, -1 on failure
- */
-int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
-{
- void *ctx;
- u8 cbc[AES_BLOCK_SIZE];
- u8 *pos = data;
- int i, j, blocks;
-
- ctx = aes_encrypt_init(key, 16);
- if (ctx == NULL)
- return -1;
- os_memcpy(cbc, iv, AES_BLOCK_SIZE);
-
- blocks = data_len / AES_BLOCK_SIZE;
- for (i = 0; i < blocks; i++) {
- for (j = 0; j < AES_BLOCK_SIZE; j++)
- cbc[j] ^= pos[j];
- aes_encrypt(ctx, cbc, cbc);
- os_memcpy(pos, cbc, AES_BLOCK_SIZE);
- pos += AES_BLOCK_SIZE;
- }
- aes_encrypt_deinit(ctx);
- return 0;
-}
-
-
-/**
- * aes_128_cbc_decrypt - AES-128 CBC decryption
- * @key: Decryption key
- * @iv: Decryption IV for CBC mode (16 bytes)
- * @data: Data to decrypt in-place
- * @data_len: Length of data in bytes (must be divisible by 16)
- * Returns: 0 on success, -1 on failure
- */
-int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
-{
- void *ctx;
- u8 cbc[AES_BLOCK_SIZE], tmp[AES_BLOCK_SIZE];
- u8 *pos = data;
- int i, j, blocks;
-
- ctx = aes_decrypt_init(key, 16);
- if (ctx == NULL)
- return -1;
- os_memcpy(cbc, iv, AES_BLOCK_SIZE);
-
- blocks = data_len / AES_BLOCK_SIZE;
- for (i = 0; i < blocks; i++) {
- os_memcpy(tmp, pos, AES_BLOCK_SIZE);
- aes_decrypt(ctx, pos, pos);
- for (j = 0; j < AES_BLOCK_SIZE; j++)
- pos[j] ^= cbc[j];
- os_memcpy(cbc, tmp, AES_BLOCK_SIZE);
- pos += AES_BLOCK_SIZE;
- }
- aes_decrypt_deinit(ctx);
- return 0;
-}