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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.
*/
/*****************************************************************************
DSAPublicKey.cpp
DSA public key class
*****************************************************************************/
#include "config.h"
#include "log.h"
#include "DSAPublicKey.h"
#include <string.h>
// Set the type
/*static*/ const char* DSAPublicKey::type = "Abstract DSA public key";
// Check if the key is of the given type
bool DSAPublicKey::isOfType(const char* inType)
{
return !strcmp(type, inType);
}
// Get the bit length
unsigned long DSAPublicKey::getBitLength() const
{
return getP().bits();
}
// Get the output length
unsigned long DSAPublicKey::getOutputLength() const
{
return getQ().size() * 2;
}
// Setters for the DSA public key components
void DSAPublicKey::setP(const ByteString& inP)
{
p = inP;
}
void DSAPublicKey::setQ(const ByteString& inQ)
{
q = inQ;
}
void DSAPublicKey::setG(const ByteString& inG)
{
g = inG;
}
void DSAPublicKey::setY(const ByteString& inY)
{
y = inY;
}
// Getters for the DSA public key components
const ByteString& DSAPublicKey::getP() const
{
return p;
}
const ByteString& DSAPublicKey::getQ() const
{
return q;
}
const ByteString& DSAPublicKey::getG() const
{
return g;
}
const ByteString& DSAPublicKey::getY() const
{
return y;
}
// Serialisation
ByteString DSAPublicKey::serialise() const
{
return p.serialise() +
q.serialise() +
g.serialise() +
y.serialise();
}
bool DSAPublicKey::deserialise(ByteString& serialised)
{
ByteString dP = ByteString::chainDeserialise(serialised);
ByteString dQ = ByteString::chainDeserialise(serialised);
ByteString dG = ByteString::chainDeserialise(serialised);
ByteString dY = ByteString::chainDeserialise(serialised);
if ((dP.size() == 0) ||
(dQ.size() == 0) ||
(dG.size() == 0) ||
(dY.size() == 0))
{
return false;
}
setP(dP);
setQ(dQ);
setG(dG);
setY(dY);
return true;
}
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