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/*
* Copyright (c) 2014 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @file crypto-logic.h
* @author Sebastian Grabowski (s.grabowski@samsung.com)
* @author Bartlomiej Grzelewski (b.grzelewski@samsung.com)
* @version 1.0
* @brief Crypto module implementation.
*/
#pragma once
#include <map>
#include <ckm/ckm-type.h>
#include <db-crypto.h>
namespace CKM {
class CryptoLogic {
public:
CryptoLogic();
CryptoLogic(const CryptoLogic &second) = delete;
CryptoLogic(CryptoLogic &&second);
CryptoLogic &operator=(CryptoLogic &&second);
CryptoLogic &operator=(const CryptoLogic &second) = delete;
virtual ~CryptoLogic() {}
void decryptRow(const Password &password, DB::Row &row);
void encryptRow(DB::Row &row);
static int getSchemeVersion(int encryptionScheme);
bool haveKey(const Label &smackLabel);
void pushKey(const Label &smackLabel,
const RawBuffer &applicationKey);
void removeKey(const Label &smackLabel);
static const int ENCRYPTION_V1 = 0;
static const int ENCRYPTION_V2 = 1;
private:
// Encryption scheme flags (enable/disable specific encryption type, multiple choice)
static const int ENCR_BASE64 = 1 << 0;
static const int ENCR_APPKEY = 1 << 1;
static const int ENCR_PASSWORD = 1 << 2;
// Encryption order flags (single choice)
static const int ENCR_ORDER_CLEAR = 0x00ffffff;
static const int ENCR_ORDER_FILTER = ~ENCR_ORDER_CLEAR;
/*
* ENCR_ORDER_V1 - v1 encryption order. Token returned from store is encrypted with app key and
* optionally by custom user password. Is such form it is stored in db.
*/
static const int ENCR_ORDER_V1 = ENCR_ORDER_CLEAR + 0;
/*
* ENCR_ORDER_V2 - v2 encryption order. Stored data is optionally encrypted by store with
* user password. Returned token is encrypted with app key and stored in db.
*/
static const int ENCR_ORDER_V2 = ENCR_ORDER_CLEAR + 1;
std::map<Label, RawBuffer> m_keyMap;
RawBuffer generateRandIV() const;
RawBuffer passwordToKey(const Password &password,
const RawBuffer &salt,
size_t keySize) const;
void decBase64(RawBuffer &data);
void encBase64(RawBuffer &data);
};
} // namespace CKM
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