SecurityKeyManager.h

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/*
 * SecurityKeyManager.h
 *
 * Copyright (C) 2011 IBR, TU Braunschweig
 *
 * Written-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
 *
 * 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.
 *
 */

#ifndef SECURITYKEYMANAGER_H_
#define SECURITYKEYMANAGER_H_

#include "Configuration.h"
#include <ibrdtn/security/SecurityKey.h>
#include <ibrdtn/data/EID.h>
#include <ibrdtn/data/DTNTime.h>
#include <ibrdtn/data/BundleString.h>
#include <ibrdtn/data/SDNV.h>
#include <ibrcommon/data/File.h>
#include <iostream>

#include <openssl/rsa.h>

namespace dtn
{
        namespace security
        {
                class SecurityKeyManager : public dtn::daemon::Configuration::OnChangeListener
                {
                public:
                        class KeyNotFoundException : public ibrcommon::Exception
                        {
                        public:
                                KeyNotFoundException(std::string what = "Requested key not found.") : ibrcommon::Exception(what)
                                {};

                                virtual ~KeyNotFoundException() throw() {};
                        };

                        static const std::string TAG;

                        static SecurityKeyManager& getInstance();

                        virtual ~SecurityKeyManager();

                        virtual void onConfigurationChanged(const dtn::daemon::Configuration &conf) throw ();

                        bool hasKey(const dtn::data::EID &ref, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC) const;
                        dtn::security::SecurityKey get(const dtn::data::EID &ref, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC) const throw (SecurityKeyManager::KeyNotFoundException);
                        void store(const dtn::data::EID &ref, const std::string &data, const dtn::security::SecurityKey::KeyType type = dtn::security::SecurityKey::KEY_UNSPEC);

                private:
                        SecurityKeyManager();

                        static int read_private_key(const ibrcommon::File &file, RSA ** rsa);

                        static int read_public_key(const ibrcommon::File &file, RSA ** rsa);


                        static const std::string hash(const dtn::data::EID &eid);

                        ibrcommon::File _path;
                        ibrcommon::File _ca;
                        ibrcommon::File _key;
                };
        }
}

#endif /* SECURITYKEYMANAGER_H_ */