86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
/*
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* synergy -- mouse and keyboard sharing utility
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* Copyright (C) 2013 Bolton Software Ltd.
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file COPYING that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "io/StreamFilter.h"
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#include "io/CryptoMode.h"
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#include "io/CryptoStream_cryptopp.h"
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#include "base/EventTypes.h"
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class CCryptoOptions;
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#define CRYPTO_IV_SIZE CryptoPP::AES::BLOCKSIZE
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//! Bidirectional encrypted stream
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/*!
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Encrypts (on write) and decrypts (on read) to and from an underlying stream.
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*/
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class CCryptoStream : public CStreamFilter {
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public:
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CCryptoStream(IEventQueue* events, synergy::IStream* stream, const CCryptoOptions& options, bool adoptStream = true);
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virtual ~CCryptoStream();
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//! @name manipulators
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//@{
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//! Read from stream
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/*!
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Read up to \p n bytes into \p buffer to the stream using encryption.
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Returns the number of bytes read by the underlying stream.
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*/
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virtual UInt32 read(void* out, UInt32 n);
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//! Write to stream
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/*!
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Write \c n bytes from \c buffer to the stream using encryption.
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*/
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virtual void write(const void* in, UInt32 n);
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//! Set the IV for encryption
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void setEncryptIv(const byte* iv);
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//! Set the IV for decryption
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void setDecryptIv(const byte* iv);
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//! Get a new IV
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/*!
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Writes a new IV to the \c out buffer, and also uses the IV for further
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crypto.
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*/
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void newIv(byte* out);
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//! Creates a key from a password
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static void createKey(byte* out, const CString& password, UInt8 keyLength, UInt8 hashCount);
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private:
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void logBuffer(const char* name, const byte* buf, int length);
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byte* m_key;
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CCryptoMode m_encryption;
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CCryptoMode m_decryption;
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CryptoPP::AutoSeededRandomPool m_autoSeedRandomPool;
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};
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namespace synergy {
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namespace crypto {
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const UInt32 kKeyLength = 32;
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}
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}
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