SoftHSMv2/src/lib/crypto/ECPrivateKey.cpp

/*
 * 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:
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
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 *
 * 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
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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 */

/*****************************************************************************
 ECPrivateKey.cpp

 Elliptic Curve private key class
 *****************************************************************************/

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

// Set the type
/*static*/ const char* ECPrivateKey::type = "Abstract EC private key";

// Check if the key is of the given type
bool ECPrivateKey::isOfType(const char* inType)
{
	return !strcmp(type, inType);
}

// Get the bit length
unsigned long ECPrivateKey::getBitLength() const
{
	return getD().bits();
}

// Get the output length
unsigned long ECPrivateKey::getOutputLength() const
{
	return getOrderLength() * 2;
}

// Setters for the EC private key components
void ECPrivateKey::setD(const ByteString& inD)
{
	d = inD;
}

// Setters for the EC public key components
void ECPrivateKey::setEC(const ByteString& inEC)
{
	ec = inEC;
}

// Getters for the EC private key components
const ByteString& ECPrivateKey::getD() const
{
	return d;
}

// Getters for the EC public key components
const ByteString& ECPrivateKey::getEC() const
{
	return ec;
}

// Serialisation
ByteString ECPrivateKey::serialise() const
{
	return ec.serialise() +
	       d.serialise();
}

bool ECPrivateKey::deserialise(ByteString& serialised)
{
	ByteString dEC = ByteString::chainDeserialise(serialised);
	ByteString dD = ByteString::chainDeserialise(serialised);

	if ((dEC.size() == 0) ||
	    (dD.size() == 0))
	{
		return false;
	}

	setEC(dEC);
	setD(dD);

	return true;
}