Cipher.h

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/*
 * Copyright (c) 2004 X-Way Rights BV
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _CLASS_BEE_CRYPTO_CIPHER_H
#define _CLASS_BEE_CRYPTO_CIPHER_H

#ifdef __cplusplus

#include "beecrypt/c++/crypto/CipherSpi.h"
using beecrypt::crypto::CipherSpi;
#include "beecrypt/c++/security/Provider.h"
using beecrypt::security::Provider;
#include "beecrypt/c++/security/cert/Certificate.h"
using beecrypt::security::cert::Certificate;

namespace beecrypt {
    namespace crypto {
        class BEECRYPTCXXAPI Cipher : public Object
        {
        public:
            static Cipher* getInstance(const String& transformation) throw (NoSuchAlgorithmException, NoSuchPaddingException);
            static Cipher* getInstance(const String& transformation, const String& provider) throw (NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException);
            static Cipher* getInstance(const String& transformation, const Provider& provider) throw (NoSuchAlgorithmException, NoSuchPaddingException);

            static const int ENCRYPT_MODE;
            static const int DECRYPT_MODE;
            static const int WRAP_MODE;
            static const int UNWRAP_MODE;

            static int getMaxAllowedKeyLength(const String& transformation) throw (NoSuchAlgorithmException);
            static AlgorithmParameterSpec* getMaxAllowedParameterSpec(const String& transformation) throw (NoSuchAlgorithmException);

        private:
            CipherSpi*      _cspi;
            String          _algo;
            const Provider* _prov;
            bool            _init;

        protected:
            Cipher(CipherSpi* cipherSpi, const Provider* provider, const String& transformation);

        public:
            virtual ~Cipher();

            bytearray* doFinal() throw (IllegalStateException, IllegalBlockSizeException, BadPaddingException);
            bytearray* doFinal(const bytearray& input) throw (IllegalStateException, IllegalBlockSizeException, BadPaddingException);
            int doFinal(bytearray& output, int outputOffset) throw (IllegalStateException, IllegalBlockSizeException, ShortBufferException, BadPaddingException);
            bytearray* doFinal(const byte* input, int inputOffset, int inputLength) throw (IllegalStateException, IllegalBlockSizeException, BadPaddingException);
            int doFinal(const byte* input, int inputOffset, int inputLength, bytearray& output, int outputOffset = 0) throw (IllegalStateException, IllegalBlockSizeException, ShortBufferException, BadPaddingException);
//          virtual int doFinal(ByteBuffer& input, ByteBuffer& output) throw (IllegalStateException, ShortBufferException, BadPaddingException);

            int getBlockSize() const throw ();
            int getKeySize() const throw ();
            int getOutputSize(int inputLength) throw ();
            AlgorithmParameters* getParameters() throw ();

            bytearray* getIV();

            void init(int opmode, const Certificate& certificate, SecureRandom* random = 0) throw (InvalidKeyException);
            void init(int opmode, const Key& key, SecureRandom* random = 0) throw (InvalidKeyException);
            void init(int opmode, const Key& key, AlgorithmParameters* params, SecureRandom* random = 0) throw (InvalidKeyException, InvalidAlgorithmParameterException);
            void init(int opmode, const Key& key, const AlgorithmParameterSpec& params, SecureRandom* random = 0) throw (InvalidKeyException, InvalidAlgorithmParameterException);

            bytearray* update(const bytearray& input) throw (IllegalStateException);
            bytearray* update(const byte* input, int inputOffset, int inputLength) throw (IllegalStateException);
            int update(const byte* input, int inputOffset, int inputLength, bytearray& output, int outputOffset = 0) throw (IllegalStateException, ShortBufferException);
//          int update(ByteBuffer& input, ByteBuffer& output) throw (IllegalStateException, ShortBufferException);

            const String& getAlgorithm() const throw ();
            const Provider& getProvider() const throw ();
        };
    }
}

#endif

#endif