/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @return self
*/
public static function fromASN1(Sequence $seq)
{
$issuer = GeneralNames::fromASN1($seq->at(0)->asSequence());
$serial = $seq->at(1)->asInteger()->number();
$uid = null;
if ($seq->has(2, Element::TYPE_BIT_STRING)) {
$uid = UniqueIdentifier::fromASN1($seq->at(2)->asBitString());
}
return new self($issuer, $serial, $uid);
}
/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @return self
*/
public static function fromASN1(Sequence $seq)
{
$type = $seq->at(0)->asEnumerated()->number();
$oid = null;
$idx = 1;
if ($seq->has($idx, Element::TYPE_OBJECT_IDENTIFIER)) {
$oid = $seq->at($idx++)->asObjectIdentifier()->oid();
}
$algo = AlgorithmIdentifier::fromASN1($seq->at($idx++)->asSequence());
$digest = $seq->at($idx)->asBitString();
$obj = new self($type, $algo, $digest);
$obj->_otherObjectTypeID = $oid;
return $obj;
}
/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @return self
*/
public static function fromV2ASN1(Sequence $seq)
{
$issuer = null;
$cert_id = null;
$digest_info = null;
if ($seq->has(0, Element::TYPE_SEQUENCE)) {
$issuer = GeneralNames::fromASN1($seq->at(0)->asSequence());
}
if ($seq->hasTagged(0)) {
$cert_id = IssuerSerial::fromASN1($seq->getTagged(0)->asImplicit(Element::TYPE_SEQUENCE)->asSequence());
}
if ($seq->hasTagged(1)) {
$digest_info = ObjectDigestInfo::fromASN1($seq->getTagged(1)->asImplicit(Element::TYPE_SEQUENCE)->asSequence());
}
$obj = new self($issuer);
$obj->_baseCertificateID = $cert_id;
$obj->_objectDigestInfo = $digest_info;
return $obj;
}
/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @throws \UnexpectedValueException
* @return self
*/
public static function fromASN1(Sequence $seq)
{
$version = $seq->at(0)->asInteger()->number();
if ($version != self::VERSION_2) {
throw new \UnexpectedValueException("Version must be 2.");
}
$holder = Holder::fromASN1($seq->at(1)->asSequence());
$issuer = AttCertIssuer::fromASN1($seq->at(2));
$signature = AlgorithmIdentifier::fromASN1($seq->at(3)->asSequence());
if (!$signature instanceof SignatureAlgorithmIdentifier) {
throw new \UnexpectedValueException("Unsupported signature algorithm " . $signature->oid() . ".");
}
$serial = $seq->at(4)->asInteger()->number();
$validity = AttCertValidityPeriod::fromASN1($seq->at(5)->asSequence());
$attribs = Attributes::fromASN1($seq->at(6)->asSequence());
$obj = new self($holder, $issuer, $validity, $attribs);
$obj->_signature = $signature;
$obj->_serialNumber = $serial;
$idx = 7;
if ($seq->has($idx, Element::TYPE_BIT_STRING)) {
$obj->_issuerUniqueID = UniqueIdentifier::fromASN1($seq->at($idx++)->asBitString());
}
if ($seq->has($idx, Element::TYPE_SEQUENCE)) {
$obj->_extensions = Extensions::fromASN1($seq->at($idx++)->asSequence());
}
return $obj;
}
/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @return self
*/
public static function fromASN1(Sequence $seq)
{
$oid = $seq->at(0)->asObjectIdentifier()->oid();
$params = $seq->has(1) ? $seq->at(1) : null;
// if algorithm identifier has a specific implementation
if (array_key_exists($oid, self::MAP_OID_TO_CLASS)) {
$cls = self::MAP_OID_TO_CLASS[$oid];
return $cls::_fromASN1Params($params);
}
return new GenericAlgorithmIdentifier($oid, $params);
}
/**
* Initialize from ASN.1.
*
* @param Sequence $seq
* @return self
*/
public static function fromASN1(Sequence $seq)
{
$extnID = $seq->at(0)->asObjectIdentifier()->oid();
$critical = false;
$idx = 1;
if ($seq->has($idx, Element::TYPE_BOOLEAN)) {
$critical = $seq->at($idx++)->asBoolean()->value();
}
$data = $seq->at($idx)->asOctetString()->string();
if (array_key_exists($extnID, self::MAP_OID_TO_CLASS)) {
$cls = self::MAP_OID_TO_CLASS[$extnID];
return $cls::_fromDER($data, $critical);
}
return new UnknownExtension($extnID, $critical, new DERData($data));
}