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_decryption.cpp
18 * @author Soyoung Kim (sy037.kim@samsung.com)
20 * @brief Implementation file for resource decryption
23 #include <dpl/encryption/resource_decryption.h>
27 #include <dpl/log/log.h>
28 #include <dpl/exception.h>
35 namespace WRTDecryptor {
36 ResourceDecryptor::ResourceDecryptor()
38 LogDebug("Started Decryption");
41 ResourceDecryptor::ResourceDecryptor(std::string userKey)
43 LogDebug("Finished Decryption");
44 SetDecryptionKey(userKey);
47 ResourceDecryptor::~ResourceDecryptor()
50 void ResourceDecryptor::SetDecryptionKey(std::string userKey)
52 if (userKey.empty()) {
56 char* pKey = GetDeviceUniqueKey(const_cast<char*>(userKey.c_str()),
57 userKey.size(), KEY_SIZE);
59 unsigned char *key = reinterpret_cast<unsigned char*>(pKey);
61 if (0 > AES_set_decrypt_key(key, BITS_SIZE, &m_decKey)) {
62 ThrowMsg(ResourceDecryptor::Exception::GetDecKeyFailed,
63 "Failed to create decryption key");
67 AES_KEY* ResourceDecryptor::GetDecryptionKey()
72 void ResourceDecryptor::GetDecryptedChunk(unsigned char*
74 unsigned char* decBuf,
79 ThrowMsg(ResourceDecryptor::Exception::EncryptionFailed,
80 "Failed to Get Decryption Chunk");
82 unsigned char ivec[16] = { 0, };
84 AES_cbc_encrypt(inBuf, decBuf, inBufSize, &m_decKey, ivec, AES_DECRYPT);
85 LogDebug("Success decryption");
87 } //namespace WRTDecryptor