SoftHSMv2/src/lib/crypto/DSAParameters.cpp

/*
 * Copyright (c) 2010 SURFnet bv
 * All rights reserved.
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 * modification, are permitted provided that the following conditions
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/*****************************************************************************
 DSAParameters.cpp

 DSA parameters (only used for key generation)
 *****************************************************************************/

#include "config.h"
#include "log.h"
#include "DSAParameters.h"
#include <string.h>

// The type
/*static*/ const char* DSAParameters::type = "Generic DSA parameters";

// Set the public prime p
void DSAParameters::setP(const ByteString& inP)
{
	p = inP;
}

// Set the public subprime q
void DSAParameters::setQ(const ByteString& inQ)
{
	q = inQ;
}

// Set the generator g
void DSAParameters::setG(const ByteString& inG)
{
	g = inG;
}

// Get the public prime p
const ByteString& DSAParameters::getP() const
{
	return p;
}

// Get the public subprime q
const ByteString& DSAParameters::getQ() const
{
	return q;
}

// Get the generator g
const ByteString& DSAParameters::getG() const
{
	return g;
}

// Are the parameters of the given type?
bool DSAParameters::areOfType(const char* inType)
{
	return (strcmp(type, inType) == 0);
}

// Serialisation
ByteString DSAParameters::serialise() const
{
	return p.serialise() + q.serialise() + g.serialise();
}

bool DSAParameters::deserialise(ByteString& serialised)
{
	ByteString dP = ByteString::chainDeserialise(serialised);
	ByteString dQ = ByteString::chainDeserialise(serialised);
	ByteString dG = ByteString::chainDeserialise(serialised);

	if ((dP.size() == 0) ||
	    (dQ.size() == 0) ||
	    (dG.size() == 0))
	{
		return false;
	}

	setP(dP);
	setQ(dQ);
	setG(dG);

	return true;
}