src/OpenSSLEncryption.php
public function makeSessionIdentifier(string $sessionId): string
    {
        return (string) openssl_digest($sessionId . $this->appKey, $this->hashAlgorithm);
    }
public function makeSessionIdentifier(string $sessionId): string
    {
        return (string) openssl_digest($sessionId . $this->appKey, $this->hashAlgorithm);
    }
Makes a session identifier based on the session id.

@param  string $sessionId The session id.
@return string The session identifier.