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/*
* Copyright (c) 2010 SURFnet bv
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*****************************************************************************
SymmetricKey.cpp
Base class for symmetric key classes
*****************************************************************************/
#include "config.h"
#include "ByteString.h"
#include "Serialisable.h"
#include "SymmetricKey.h"
#include "CryptoFactory.h"
// Base constructors
SymmetricKey::SymmetricKey(size_t inBitLen /* = 0 */)
{
bitLen = inBitLen;
}
SymmetricKey::SymmetricKey(const SymmetricKey& in)
{
keyData = in.keyData;
bitLen = in.bitLen;
}
// Set the key
bool SymmetricKey::setKeyBits(const ByteString& keybits)
{
if ((bitLen > 0) && ((keybits.size() * 8) != bitLen))
{
return false;
}
keyData = keybits;
return true;
}
// Get the key
const ByteString& SymmetricKey::getKeyBits() const
{
return keyData;
}
// Get the key check value
ByteString SymmetricKey::getKeyCheckValue() const
{
ByteString digest;
HashAlgorithm* hash = CryptoFactory::i()->getHashAlgorithm(HashAlgo::SHA1);
if (hash == NULL) return digest;
if (!hash->hashInit() ||
!hash->hashUpdate(keyData) ||
!hash->hashFinal(digest))
{
CryptoFactory::i()->recycleHashAlgorithm(hash);
return digest;
}
CryptoFactory::i()->recycleHashAlgorithm(hash);
digest.resize(3);
return digest;
}
// Serialisation
ByteString SymmetricKey::serialise() const
{
return keyData;
}
// Set the bit length
void SymmetricKey::setBitLen(const size_t inBitLen)
{
bitLen = inBitLen;
}
// Retrieve the bit length
size_t SymmetricKey::getBitLen() const
{
return bitLen;
}
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