How can I generate my key to decrypt files that I encrypted with a key that I generated with this code?

Question

public static byte[] generateKey(String password) throws Exception
    {
        byte[] keyStart = password.getBytes("UTF-8");

        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom sr = SecureRandom.getInstance("SHA1PRNG", "Crypto");
        sr.setSeed(keyStart);
        kgen.init(128, sr);
        SecretKey skey = kgen.generateKey();
        return skey.getEncoded();
    }

On Android 5.1 it worked perfectly, I would like to recover my files, how to decrypt them on Android 11?