Dooble
Source
dooble_block_cipher.h
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/*
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** Copyright (c) 2008 - present, Alexis Megas.
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from Dooble without specific prior written permission.
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**
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** DOOBLE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** DOOBLE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef dooble_block_cipher_h
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#define dooble_block_cipher_h
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#include <QByteArray>
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class
dooble_block_cipher
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{
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public
:
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virtual
~
dooble_block_cipher
();
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virtual
QByteArray decrypt(
const
QByteArray &data) = 0;
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virtual
QByteArray encrypt(
const
QByteArray &data) = 0;
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virtual
void
set_key(
const
QByteArray &key) = 0;
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virtual
void
set_tweak(
const
QByteArray &tweak,
bool
*ok);
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protected
:
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QByteArray m_key;
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int
m_block_length;
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int
m_key_length;
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dooble_block_cipher
(
const
QByteArray &key);
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dooble_block_cipher
(
void
);
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static
QByteArray xor_arrays(
const
QByteArray &a,
const
QByteArray &b)
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{
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QByteArray bytes;
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auto
length = qMin(a.length(), b.length());
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for
(
int
i = 0; i < length; i++)
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bytes.append(
static_cast<
char
>
(a[i] ^ b[i]));
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return
bytes;
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}
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};
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#endif
dooble_block_cipher
Definition:
dooble_block_cipher.h:34
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