ibrdtn/ibrdtn/security/PayloadConfidentialBlock.h

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#ifndef _PAYLOAD_CONFIDENTIAL_BLOCK_H_
#define _PAYLOAD_CONFIDENTIAL_BLOCK_H_
#include "ibrdtn/security/SecurityBlock.h"
#include "ibrdtn/security/SecurityKey.h"
#include "ibrdtn/data/PayloadBlock.h"
#include "ibrdtn/data/ExtensionBlock.h"

namespace dtn
{
        namespace security
        {
                class PayloadConfidentialBlock : public SecurityBlock
                {
                        friend class dtn::data::Bundle;
                        public:
                                class Factory : public dtn::data::ExtensionBlock::Factory
                                {
                                public:
                                        Factory() : dtn::data::ExtensionBlock::Factory(PayloadConfidentialBlock::BLOCK_TYPE) {};
                                        virtual ~Factory() {};
                                        virtual dtn::data::Block* create();
                                };

                                static const char BLOCK_TYPE = SecurityBlock::PAYLOAD_CONFIDENTIAL_BLOCK;

                                virtual ~PayloadConfidentialBlock();

                                static void encrypt(dtn::data::Bundle& bundle, const dtn::security::SecurityKey &long_key, const dtn::data::EID& source);

                                static void decrypt(dtn::data::Bundle& bundle, const dtn::security::SecurityKey &long_key);

                        protected:
                                PayloadConfidentialBlock();

                                static bool decryptPayload(dtn::data::Bundle& bundle, const unsigned char ephemeral_key[ibrcommon::AES128Stream::key_size_in_bytes], const u_int32_t salt);
                };

                static PayloadConfidentialBlock::Factory __PayloadConfidentialBlockFactory__;
        }
}

#endif