private function validateKey($key): void
    {
        if (! is_resource($key)) {
            throw new InvalidArgumentException(
                'It was not possible to parse your key, reason: ' . openssl_error_string()
            );
        }

        $details = openssl_pkey_get_details($key);
        assert(is_array($details));

        if (! isset($details['key']) || $details['type'] !== $this->getKeyType()) {
            throw new InvalidArgumentException('This key is not compatible with this signer');
        }
    }
private function validateKey($key): void
    {
        if (! is_resource($key)) {
            throw new InvalidArgumentException(
                'It was not possible to parse your key, reason: ' . openssl_error_string()
            );
        }

        $details = openssl_pkey_get_details($key);
        assert(is_array($details));

        if (! isset($details['key']) || $details['type'] !== $this->getKeyType()) {
            throw new InvalidArgumentException('This key is not compatible with this signer');
        }
    }
private function validateKey ( $ key ) : void { if ( ! is_resource ( $ key ) ) { throw new InvalidArgumentException ( 'It was not possible to parse your key, reason: ' . openssl_error_string ( ) ) ; } $ details = openssl_pkey_get_details ( $ key ) ; assert ( is_array ( $ details ) ) ; if ( ! isset ( $ details [ 'key' ] ) || $ details [ 'type' ] !== $ this -> getKeyType ( ) ) { throw new InvalidArgumentException ( 'This key is not compatible with this signer' ) ; } }
Raises an exception when the key type is not the expected type

@param resource|bool $key

@throws InvalidArgumentException
Raises an exception when the key type is not the expected type