/**
* @param string $params
* @return \Mdanter\Ecc\Curves\NamedCurveFp
*/
public function parse($params)
{
$params = str_replace(self::HEADER, '', $params);
$params = str_replace(self::FOOTER, '', $params);
$oid = ObjectIdentifier::fromBinary(base64_decode($params));
return CurveOidMapper::getCurveFromOid($oid);
}
public function format(PublicKeyInterface $key)
{
if (!$key->getCurve() instanceof NamedCurveFp) {
throw new \RuntimeException('Not implemented for unnamed curves');
}
$sequence = new Sequence(new Sequence(new ObjectIdentifier(DerPublicKeySerializer::X509_ECDSA_OID), CurveOidMapper::getCurveOid($key->getCurve())), new BitString($this->encodePoint($key->getPoint())));
return $sequence->getBinary();
}
/**
* @param string $data
* {@inheritDoc}
* @see \Mdanter\Ecc\Serializer\PrivateKeySerializerInterface::parse()
* @throws \FG\ASN1\Exception\ParserException
*/
public function parse($data)
{
$asnObject = Object::fromBinary($data);
if (!$asnObject instanceof Sequence || $asnObject->getNumberofChildren() !== 4) {
throw new \RuntimeException('Invalid data.');
}
$children = $asnObject->getChildren();
$version = $children[0];
if ($version->getContent() != 1) {
throw new \RuntimeException('Invalid data: only version 1 (RFC5915) keys are supported.');
}
$key = $this->adapter->hexDec($children[1]->getContent());
$oid = $children[2]->getContent();
$generator = CurveOidMapper::getGeneratorFromOid($oid);
return $generator->getPrivateKeyFrom($key);
}
public function parse($binaryData)
{
$asnObject = Object::fromBinary($binaryData);
if (!$asnObject instanceof Sequence || $asnObject->getNumberofChildren() != 2) {
throw new \RuntimeException('Invalid data.');
}
$children = $asnObject->getChildren();
$oid = $children[0]->getChildren()[0];
$curveOid = $children[0]->getChildren()[1];
$encodedKey = $children[1];
if ($oid->getContent() !== DerPublicKeySerializer::X509_ECDSA_OID) {
throw new \RuntimeException('Invalid data: non X509 data.');
}
$generator = CurveOidMapper::getGeneratorFromOid($curveOid);
return $this->parseKey($generator, $encodedKey->getContent());
}
/**
* @param PointInterface $point
* @return string
*/
public function serialize(PointInterface $point)
{
$length = CurveOidMapper::getByteSize($point->getCurve()) * 2;
if ($this->debug) {
error_log('Detected length: ' . $length);
error_log('Unpadded:' . $this->adapter->decHex($point->getX()));
error_log('Unpadded len:' . strlen($this->adapter->decHex($point->getX())));
error_log('Padded: ' . str_pad($this->adapter->decHex($point->getX()), $length, '0', STR_PAD_LEFT));
}
$hexString = '04';
$hexString .= str_pad($this->adapter->decHex($point->getX()), $length, '0', STR_PAD_LEFT);
$hexString .= str_pad($this->adapter->decHex($point->getY()), $length, '0', STR_PAD_LEFT);
if ($this->debug) {
error_log('Resulting length: ' . strlen($hexString));
error_log('Hex: ' . $hexString);
}
return $hexString;
}
/**
* @param NamedCurveFp $curve
* @param PublicKeyInterface $publicKey
* @return Sequence
*/
public function getSubjectKeyASN(NamedCurveFp $curve, PublicKeyInterface $publicKey)
{
return new Sequence(new Sequence(new ObjectIdentifier(CertificateSerializer::ECPUBKEY_OID), CurveOidMapper::getCurveOid($curve)), new BitString($this->pubKeySer->getUncompressedKey($publicKey)));
}
/**
* @param NamedCurveFp $curve
* @param PublicKeyInterface $publicKey
* @return Sequence
*/
public function getSubjectKeyASN(NamedCurveFp $curve, PublicKeyInterface $publicKey)
{
return new Sequence(new Sequence(new ObjectIdentifier('1.2.840.10045.2.1'), CurveOidMapper::getCurveOid($curve)), new BitString($this->pubKeySer->getUncompressedKey($publicKey)));
}
/**
* @param InputInterface $input
* @param OutputInterface $output
*/
protected function execute(InputInterface $input, OutputInterface $output)
{
$output->writeln(CurveOidMapper::getNames());
}
/**
* {@inheritDoc}
* @see \Mdanter\Ecc\Serializer\PrivateKeySerializerInterface::serialize()
*/
public function getPrivateKeyInfo(PrivateKeyInterface $key)
{
$keyData = $this->serializer->serialize($key);
$privateKeyInfo = new Sequence(new Integer(self::VERSION), new Sequence(new ObjectIdentifier(DerPublicKeySerializer::X509_ECDSA_OID), CurveOidMapper::getCurveOid($key->getPoint()->getCurve())), new OctetString(bin2hex($keyData)));
return $privateKeyInfo;
}
