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7799c88df6
git-svn-id: http://encfs.googlecode.com/svn/trunk@93 db9cf616-1c43-0410-9cb8-a902689de0d6
90 lines
2.9 KiB
C++
90 lines
2.9 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 _NullCipher_incl_
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#define _NullCipher_incl_
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#include "cipher/Cipher.h"
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#include "base/Interface.h"
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namespace encfs {
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/*
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Implements Cipher interface for a pass-through mode. May be useful for
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testing, but that's it.
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*/
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class NullCipher : public Cipher
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{
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Interface iface;
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public:
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NullCipher(const Interface &iface);
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virtual ~NullCipher();
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virtual Interface interface() const;
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// create a new key based on a password
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virtual CipherKey newKey(const char *password, int passwdLength,
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int &iterationCount, long desiredDuration,
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const byte *salt, int saltLen);
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virtual CipherKey newKey(const char *password, int passwdLength);
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// create a new random key
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virtual CipherKey newRandomKey();
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// data must be len keySize()
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virtual CipherKey readKey(const byte *data,
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const CipherKey &encodingKey,
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bool checkKey);
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virtual void writeKey(const CipherKey &key, byte *data,
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const CipherKey &encodingKey);
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virtual bool compareKey( const CipherKey &A,
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const CipherKey &B ) const;
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// meta-data about the cypher
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virtual int keySize() const;
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virtual int encodedKeySize() const;
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virtual int cipherBlockSize() const;
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virtual bool randomize( byte *buf, int len,
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bool strongRandom ) const;
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virtual uint64_t MAC_64(const byte *data, int len,
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const CipherKey &key, uint64_t *chainedIV) const;
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// functional interfaces
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virtual bool streamEncode(byte *in, int len,
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uint64_t iv64, const CipherKey &key) const;
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virtual bool streamDecode(byte *in, int len,
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uint64_t iv64, const CipherKey &key) const;
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virtual bool blockEncode(byte *buf, int size,
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uint64_t iv64, const CipherKey &key) const;
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virtual bool blockDecode(byte *buf, int size,
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uint64_t iv64, const CipherKey &key) const;
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// hack to help with static builds
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static bool Enabled();
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};
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} // namespace encfs
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#endif
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