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// $Id: //poco/1.3/Crypto/include/Poco/Crypto/CryptoStream.h#1 $
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// Module: CryptoStream
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// Definition of the CryptoStreamBuf, CryptoInputStream and CryptoOutputStream
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// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef Crypto_CryptoStream_INCLUDED
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#define Crypto_CryptoStream_INCLUDED
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#include "Poco/Crypto/Crypto.h"
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#include "Poco/BufferedStreamBuf.h"
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#include "Poco/Buffer.h"
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class CryptoTransform;
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class Crypto_API CryptoStreamBuf : public Poco::BufferedStreamBuf
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/// This stream buffer performs cryptographic transformation on the data
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CryptoStreamBuf(std::istream& istr, CryptoTransform* pTransform, std::size_t bufferSize = 8192);
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CryptoStreamBuf(std::ostream& ostr, CryptoTransform* pTransform,
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std::size_t bufferSize = 8192);
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virtual ~CryptoStreamBuf();
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int readFromDevice(char* buffer, std::streamsize length);
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int writeToDevice(const char* buffer, std::streamsize length);
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CryptoTransform* _pTransform;
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Poco::Buffer<unsigned char> _buffer;
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CryptoStreamBuf(const CryptoStreamBuf&);
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CryptoStreamBuf& operator = (const CryptoStreamBuf&);
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class Crypto_API CryptoIOS : public virtual std::ios
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/// The base class for CryptoInputStream and CryptoOutputStream.
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/// This class is needed to ensure correct initialization order of the
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/// stream buffer and base classes.
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CryptoIOS(std::istream& istr, CryptoTransform* pTransform,
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std::size_t bufferSize = 8192);
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CryptoIOS(std::ostream& ostr, CryptoTransform* pTransform,
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std::size_t bufferSize = 8192);
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CryptoStreamBuf* rdbuf();
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CryptoStreamBuf _buf;
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class Crypto_API CryptoInputStream : public CryptoIOS, public std::istream
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/// This stream transforms all data passing through it using the given
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/// Use a CryptoTransform object provided by Cipher::createEncrytor() or
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/// Cipher::createDecryptor() to create an encrypting or decrypting stream,
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CryptoInputStream(std::istream& istr, CryptoTransform* pTransform, std::size_t bufferSize = 8192);
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/// Create a new CryptoInputStream object. The CryptoInputStream takes the
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/// ownership of the given CryptoTransform object.
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CryptoInputStream(std::istream& istr, Cipher& cipher, std::size_t bufferSize = 8192);
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/// Create a new encrypting CryptoInputStream object using the given cipher.
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~CryptoInputStream();
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class Crypto_API CryptoOutputStream : public CryptoIOS, public std::ostream
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/// This stream transforms all data passing through it using the given
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/// Use a CryptoTransform object provided by Cipher::createEncrytor() or
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/// Cipher::createDecryptor() to create an encrypting or decrypting stream,
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/// After all data has been passed through the stream, close() must be called
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/// to ensure completion of cryptographic transformation.
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CryptoOutputStream(std::ostream& ostr, CryptoTransform* pTransform, std::size_t bufferSize = 8192);
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/// Create a new CryptoOutputStream object. The CryptoOutputStream takes the
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/// ownership of the given CryptoTransform object.
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CryptoOutputStream(std::ostream& ostr, Cipher& cipher, std::size_t bufferSize = 8192);
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/// Create a new decrypting CryptoOutputStream object using the given cipher.
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~CryptoOutputStream();
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} } // namespace Poco::Crypto
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#endif // Crypto_CryptoStream_INCLUDED
added
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Crypto/include/Poco/Crypto/CryptoStream.h
