private static function getRSAEP(RSAKey $key, BigInteger $m): BigInteger
    {
        if ($m->compare(BigInteger::createFromDecimal(0)) < 0 || $m->compare($key->getModulus()) > 0) {
            throw new \RuntimeException();
        }

        return RSAKey::exponentiate($key, $m);
    }
private static function getRSAEP(RSAKey $key, BigInteger $m): BigInteger
    {
        if ($m->compare(BigInteger::createFromDecimal(0)) < 0 || $m->compare($key->getModulus()) > 0) {
            throw new \RuntimeException();
        }

        return RSAKey::exponentiate($key, $m);
    }
private static function getRSAEP ( RSAKey $ key , BigInteger $ m ) : BigInteger { if ( $ m -> compare ( BigInteger :: createFromDecimal ( 0 ) ) < 0 || $ m -> compare ( $ key -> getModulus ( ) ) > 0 ) { throw new \ RuntimeException ( ) ; } return RSAKey :: exponentiate ( $ key , $ m ) ; }
RSA EP.
RSA EP .