Method unpack

algorithm/TeaEncrypt.java:45–55

(String tmp, int start)

    }

    private static int unpack(String tmp, int start) {
        char[] arr = tmp.substring(start).toCharArray();
        int d = arr[0];
        int c = arr[1];
        int b = arr[2];
        int a = arr[3];
        a = a << 24;
        b = b << 16;
        c = c << 8;
        return a + b + c + d;
    }

    private static String encrypt(String v) {
        int v0 = strToInt(v);