42     private $pkey;  variable in X509Certificate
73         if ($this->pkey !== null && $this->pkey !== false) {
74             openssl_pkey_free($this->pkey);
129         if ($this->pkey == null || $this->pkey === false) {
130             $this->pkey = openssl_pkey_get_public($this->cert);
133         return X509Certificate::verifyPublicKeySignature($this->pkey, $data, $sign, $algorithm);
170         if ($this->pkey === null || $this->pkey === false) {
171             $this->pkey = openssl_pkey_get_public($this->cert);
174         return $this->pkey;
231      * @param  resource $pkey OpenSSL public key resource
234     public static function getPublicKeyHash($pkey) {  argument
236         if (!is_resource($pkey)) {
240         $params = openssl_pkey_get_details($pkey);
263      * @param  resource $pkey public key to use for verification
269     public static function verifyPublicKeySignature($pkey, $data, $sign, $algorithm = 'sha256') {  argument
279         if (!is_resource($pkey)) {
286         return openssl_verify($data, $sign, $pkey, $algorithm) === 1;