/**
* Creates and sets ASN.1 parser
*
*/
private function setParser()
{
$reader = \ASN1\ASN1::createReader();
$this->_parser = \ASN1\ASN1::createParser($reader);
}
/**
* Return digest of the subjetcname field using algorithm $alg
*
* @param string $alg OID of the digest algorithm ('1.3.14.3.2.26'
* i. e. SHA1 by default
*
* @retval string hexadecimal representation of the subjectname hash
*/
public function getSubjectNameHash($alg = '1.3.14.3.2.26')
{
$ser = \ASN1\ASN1::createSerializer(\ASN1\ASN1::createWriter());
$data = $ser->serialize($this->subject);
return $this->_hashData($data, $alg);
}
/** @name Signature Verification (Local implementation)
*
* Local implementation of signature verification related methods
**@{
*/
public function getSignedData()
{
$writer = \ASN1\ASN1::createWriter();
$ser = \ASN1\ASN1::createSerializer($writer);
return $ser->serialize($this->_tlv->first());
}
/**
* Create a new \\PKIX\\TSP\\Request from parameters provided in
* $params. The request is minimal but compliant with RFC3161 and
* can be used to query a TSP server.
*
* @param array $params contains configuration parameters for the
* message:
* - hashAlgorithm - string representation of hash algorithm OID
* - hashedMessage - hex representation of the hashed message
*
* @retval \PKIX\TSP\Request new instance
*/
public function createFromParams(array $params)
{
/*
TimeStampReq ::= SEQUENCE {
version INTEGER { v1(1) },
messageImprint MessageImprint,
--a hash algorithm OID and the hash value of the data to be
--time-stamped
reqPolicy TSAPolicyId OPTIONAL,
nonce INTEGER OPTIONAL,
certReq BOOLEAN DEFAULT FALSE,
extensions [0] IMPLICIT Extensions OPTIONAL }
MessageImprint ::= SEQUENCE {
hashAlgorithm AlgorithmIdentifier,
hashedMessage OCTET STRING }
*/
$hashAlg = new \ASN1\TLV((object) array('Class' => TLV_CLASS_UNIVERSAL, 'Type' => TLV_TYPE_CONSTRUCTED, 'Tag' => TLV_TAG_SEQUENCE));
$algorithm = \ASN1\TLV\OID::create();
$algorithm->set($params['hashAlgorithm']);
$parameters = \ASN1\TLV\Null::create();
$parameters->set(null);
$hashAlg->add($algorithm);
$hashAlg->add($parameters);
$hashedMessage = \ASN1\TLV\OctetString::create();
$hashedMessage->set($params['hashedMessage']);
$messageImprint = new \ASN1\TLV((object) array('Class' => TLV_CLASS_UNIVERSAL, 'Type' => TLV_TYPE_CONSTRUCTED, 'Tag' => TLV_TAG_SEQUENCE));
$messageImprint->add($hashAlg);
$messageImprint->add($hashedMessage);
$version = \ASN1\TLV\Integer::create();
$version->set(static::TSP_Version);
$tsReq = new \ASN1\TLV((object) array('Class' => TLV_CLASS_UNIVERSAL, 'Type' => TLV_TYPE_CONSTRUCTED, 'Tag' => TLV_TAG_SEQUENCE));
$tsReq->add($version);
$tsReq->add($messageImprint);
$writer = \ASN1\ASN1::createWriter();
$ser = \ASN1\ASN1::createSerializer($writer);
$data = $ser->serialize($tsReq);
return new static($data);
}
