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/*
* Copyright (c) 2010 .SE (The Internet Infrastructure Foundation)
* 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.
*/
/*****************************************************************************
BotanDSAPublicKey.cpp
Botan DSA public key class
*****************************************************************************/
#include "config.h"
#include "log.h"
#include "BotanDSAPublicKey.h"
#include "BotanUtil.h"
#include <string.h>
// Constructors
BotanDSAPublicKey::BotanDSAPublicKey()
{
dsa = NULL;
}
BotanDSAPublicKey::BotanDSAPublicKey(const Botan::DSA_PublicKey* inDSA)
{
dsa = NULL;
setFromBotan(inDSA);
}
// Destructor
BotanDSAPublicKey::~BotanDSAPublicKey()
{
delete dsa;
}
// The type
/*static*/ const char* BotanDSAPublicKey::type = "Botan DSA Public Key";
// Set from Botan representation
void BotanDSAPublicKey::setFromBotan(const Botan::DSA_PublicKey* inDSA)
{
ByteString inP = BotanUtil::bigInt2ByteString(inDSA->group_p());
setP(inP);
ByteString inQ = BotanUtil::bigInt2ByteString(inDSA->group_q());
setQ(inQ);
ByteString inG = BotanUtil::bigInt2ByteString(inDSA->group_g());
setG(inG);
ByteString inY = BotanUtil::bigInt2ByteString(inDSA->get_y());
setY(inY);
}
// Check if the key is of the given type
bool BotanDSAPublicKey::isOfType(const char* inType)
{
return !strcmp(type, inType);
}
// Setters for the DSA public key components
void BotanDSAPublicKey::setP(const ByteString& inP)
{
DSAPublicKey::setP(inP);
if (dsa)
{
delete dsa;
dsa = NULL;
}
}
void BotanDSAPublicKey::setQ(const ByteString& inQ)
{
DSAPublicKey::setQ(inQ);
if (dsa)
{
delete dsa;
dsa = NULL;
}
}
void BotanDSAPublicKey::setG(const ByteString& inG)
{
DSAPublicKey::setG(inG);
if (dsa)
{
delete dsa;
dsa = NULL;
}
}
void BotanDSAPublicKey::setY(const ByteString& inY)
{
DSAPublicKey::setY(inY);
if (dsa)
{
delete dsa;
dsa = NULL;
}
}
// Retrieve the Botan representation of the key
Botan::DSA_PublicKey* BotanDSAPublicKey::getBotanKey()
{
if (!dsa)
{
createBotanKey();
}
return dsa;
}
// Create the Botan representation of the key
void BotanDSAPublicKey::createBotanKey()
{
// We actually do not need to check q, since it can be set zero
if (p.size() != 0 &&
g.size() != 0 &&
y.size() != 0)
{
if (dsa)
{
delete dsa;
dsa = NULL;
}
try
{
dsa = new Botan::DSA_PublicKey(Botan::DL_Group(BotanUtil::byteString2bigInt(p),
BotanUtil::byteString2bigInt(q),
BotanUtil::byteString2bigInt(g)),
BotanUtil::byteString2bigInt(y));
}
catch (...)
{
ERROR_MSG("Could not create the Botan public key");
}
}
}
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