public function encryptSessionData(string $sessionId, string $sessionData): string
    {
        $ivLength = (int) openssl_cipher_iv_length($this->encryptionAlgorithm);
        $initVector = (string) openssl_random_pseudo_bytes($ivLength);

        $encryptionKey = $this->getEncryptionKey($sessionId);
        $encryptedData = openssl_encrypt($sessionData, $this->encryptionAlgorithm, $encryptionKey, 0, $initVector);

        return (string) json_encode(
            [
                'data' => $encryptedData,
                'initVector' => base64_encode($initVector)
            ]
        );
    }
public function encryptSessionData(string $sessionId, string $sessionData): string
    {
        $ivLength = (int) openssl_cipher_iv_length($this->encryptionAlgorithm);
        $initVector = (string) openssl_random_pseudo_bytes($ivLength);

        $encryptionKey = $this->getEncryptionKey($sessionId);
        $encryptedData = openssl_encrypt($sessionData, $this->encryptionAlgorithm, $encryptionKey, 0, $initVector);

        return (string) json_encode(
            [
                'data' => $encryptedData,
                'initVector' => base64_encode($initVector)
            ]
        );
    }
public function encryptSessionData ( string $ sessionId , string $ sessionData ) : string { $ ivLength = ( int ) openssl_cipher_iv_length ( $ this -> encryptionAlgorithm ) ; $ initVector = ( string ) openssl_random_pseudo_bytes ( $ ivLength ) ; $ encryptionKey = $ this -> getEncryptionKey ( $ sessionId ) ; $ encryptedData = openssl_encrypt ( $ sessionData , $ this -> encryptionAlgorithm , $ encryptionKey , 0 , $ initVector ) ; return ( string ) json_encode ( [ 'data' => $ encryptedData , 'initVector' => base64_encode ( $ initVector ) ] ) ; }
Encrypts the session data.

@param  string $sessionId   The session id.
@param  string $sessionData The session data.
@return string The encrypted session data.
Encrypts the session data .