Returns 90 character string. Used for passphrases. Replace "[sprinkles]" with characters you want to sprinkle in. :)

createPassphrase

    private static String createPassphrase() {
        long currentTime = System.nanoTime();
        char[] x = ("[sprinkles]").toCharArray();
        StringBuilder stringBuilder = new StringBuilder();
        for (char s : x) {
            stringBuilder.append("" + currentTime);
            stringBuilder.append(s);
        }

        try {
            MessageDigest messageDigest = MessageDigest.getInstance("SHA-512");
            return Base64.encodeToString(messageDigest.digest(stringBuilder.toString().getBytes("UTF-8")), Base64.DEFAULT);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        return null;
    }