2 * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 * @file resource_encryption.cpp
18 * @author Soyoung Kim (sy037.kim@samsung.com)
20 * @brief Implementation file for resource encryption
23 #include <dpl/encryption/resource_encryption.h>
26 #include <dpl/log/log.h>
32 namespace WRTEncryptor{
33 ResourceEncryptor::ResourceEncryptor()
35 LogDebug("Started Encrytion");
38 ResourceEncryptor::~ResourceEncryptor()
40 LogDebug("Finished Encrytion");
43 int ResourceEncryptor::GetBlockSize(int inSize)
45 if ((inSize % AES_BLOCK_SIZE) != 0) {
46 return (( inSize/ AES_BLOCK_SIZE) +1) * AES_BLOCK_SIZE;
51 void ResourceEncryptor::CreateEncryptionKey(std::string userKey)
53 if (userKey.empty()) {
57 char **duk = calculate(const_cast<char*>(userKey.c_str()), userKey.size(), KEY_SIZE);
58 unsigned char *key = reinterpret_cast<unsigned char*>(*duk);
60 if ( 0 > AES_set_encrypt_key(key, BITS_SIZE, &m_encKey)) {
61 ThrowMsg(ResourceEncryptor::Exception::CreateEncKeyFailed,
62 "Failed to create encryption key");
64 LogDebug("Success to create ecryption and decryption key");
67 AES_KEY ResourceEncryptor::GetEncryptionkey()
72 void ResourceEncryptor::EncryptChunk(unsigned char*
73 inputBuf, unsigned char* encBuf, size_t chunkSize)
78 unsigned char ivec[16] = {0, };
80 AES_cbc_encrypt(inputBuf, encBuf, chunkSize, &m_encKey, ivec, AES_ENCRYPT);
82 } //namespace ResourceEnc