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74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
/*****************************************************************************
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* Author: Valient Gough <vgough@pobox.com>
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*
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*****************************************************************************
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* Copyright (c) 2004, Valient Gough
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser 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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#ifndef _BlockNameIO_incl_
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#define _BlockNameIO_incl_
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#include <memory>
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#include <stdint.h> // for uint64_t
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#include "CipherKey.h" // for CipherKey
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#include "Interface.h" // for Interface
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#include "NameIO.h" // for NameIO
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namespace encfs {
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class Cipher;
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/*
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Implement NameIO interface for filename encoding. Uses cipher in block
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mode to encode filenames. The filenames are padded to be a multiple of the
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cipher block size.
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*/
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class BlockNameIO : public NameIO {
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public:
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static Interface CurrentInterface(bool caseInsensitive = false);
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BlockNameIO(const Interface &iface, std::shared_ptr<Cipher> cipher,
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CipherKey key, int blockSize,
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bool caseInsensitiveEncoding = false);
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virtual ~BlockNameIO();
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virtual Interface interface() const;
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virtual int maxEncodedNameLen(int plaintextNameLen) const;
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virtual int maxDecodedNameLen(int encodedNameLen) const;
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// hack to help with static builds
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static bool Enabled();
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protected:
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virtual int encodeName(const char *plaintextName, int length, uint64_t *iv,
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char *encodedName, int bufferLength) const;
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virtual int decodeName(const char *encodedName, int length, uint64_t *iv,
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char *plaintextName, int bufferLength) const;
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private:
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int _interface;
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int _bs;
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std::shared_ptr<Cipher> _cipher;
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CipherKey _key;
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bool _caseInsensitive;
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};
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} // namespace encfs
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#endif
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