SecurityManager.h

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/*
 * SecurityManager.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 _SECURITY_MANAGER_H_
#define _SECURITY_MANAGER_H_

#include "Configuration.h"
#include <ibrdtn/data/EID.h>
#include <ibrdtn/data/Bundle.h>
#include <ibrdtn/security/BundleAuthenticationBlock.h>
#include <ibrdtn/security/PayloadIntegrityBlock.h>
#include <ibrdtn/security/PayloadConfidentialBlock.h>
#include <ibrdtn/security/ExtensionSecurityBlock.h>
#include <map>

namespace dtn
{
        namespace security
        {
                class SecurityManager
                {
                        public:
                                class KeyMissingException : public ibrcommon::Exception
                                {
                                public:
                                        KeyMissingException(std::string what = "Key for this operation is not available.") : ibrcommon::Exception(what)
                                        {};

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

                                class EncryptException : public ibrcommon::Exception
                                {
                                public:
                                        EncryptException(std::string what = "Encryption failed.") : ibrcommon::Exception(what)
                                        {};

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

                                class DecryptException : public ibrcommon::Exception
                                {
                                public:
                                        DecryptException(std::string what = "Decryption failed.") : ibrcommon::Exception(what)
                                        {};

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

                                class VerificationFailedException : public ibrcommon::Exception
                                {
                                public:
                                        VerificationFailedException(std::string what = "Verification failed.") : ibrcommon::Exception(what)
                                        {};

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

                                static SecurityManager& getInstance();

                                void sign(dtn::data::Bundle &bundle) const throw (KeyMissingException);
                                void auth(dtn::data::Bundle &bundle) const throw (KeyMissingException);

                                void verify(dtn::data::Bundle &bundle) const throw (VerificationFailedException);
                                void verifyBAB(dtn::data::Bundle &bundle) const throw (VerificationFailedException);
                                void verifyPIB(dtn::data::Bundle &bundle) const throw (VerificationFailedException);

                                void fastverify(const dtn::data::Bundle &bundle) const throw (VerificationFailedException);

                                void decrypt(dtn::data::Bundle &bundle) const throw (DecryptException, KeyMissingException);

                                void encrypt(dtn::data::Bundle &bundle) const throw (EncryptException, KeyMissingException);

                        protected:
                                SecurityManager();

                                virtual ~SecurityManager();

                        private:
                                bool _accept_only_bab;
                                bool _accept_only_pib;
                };
        }
}

#endif /* _SECURITY_MANAGER_H_ */