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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.
*/
/*****************************************************************************
DHParameters.cpp
Diffie-Hellman parameters (only used for key generation)
*****************************************************************************/
#include "config.h"
#include "log.h"
#include "DHParameters.h"
#include <string.h>
// The type
/*static*/ const char* DHParameters::type = "Generic DH parameters";
// Set the public prime p
void DHParameters::setP(const ByteString& inP)
{
p = inP;
}
// Set the generator g
void DHParameters::setG(const ByteString& inG)
{
g = inG;
}
// Set the optional bit length
void DHParameters::setXBitLength(const size_t inBitLen)
{
bitLen = inBitLen;
}
// Get the public prime p
const ByteString& DHParameters::getP() const
{
return p;
}
// Get the generator g
const ByteString& DHParameters::getG() const
{
return g;
}
// Get the optional bit length
size_t DHParameters::getXBitLength() const
{
return bitLen;
}
// Are the parameters of the given type?
bool DHParameters::areOfType(const char* inType)
{
return (strcmp(type, inType) == 0);
}
// Serialisation
ByteString DHParameters::serialise() const
{
ByteString len(bitLen);
return p.serialise() + g.serialise() + len.serialise();
}
bool DHParameters::deserialise(ByteString& serialised)
{
ByteString dP = ByteString::chainDeserialise(serialised);
ByteString dG = ByteString::chainDeserialise(serialised);
ByteString dLen = ByteString::chainDeserialise(serialised);
if ((dP.size() == 0) ||
(dG.size() == 0) ||
(dLen.size() == 0))
{
return false;
}
setP(dP);
setG(dG);
setXBitLength(dLen.long_val());
return true;
}
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