package com.xmr.util;

/**
 * @author Adil
 * Credit to Jordan
 **/
public class B64 {
public static byte NEGATIVE = 64;
    public static byte POSITIVE = 65;

    public static byte[] EncodeInt32(int i, int numBytes)
    {
        byte[] bzRes = new byte[numBytes];
        for (int j = 1; j <= numBytes; j++)
        {
            int k = ((numBytes - j) * 6);
            bzRes[j - 1] = (byte)(0x40 + ((i >> k) & 0x3f));
        }

        return bzRes;
    }

    public static int DecodeInt32(byte[] bzData)
    {
        int i = 0;
        int j = 0;
        for (int k = bzData.length - 1; k >= 0; k--)
        {
            int x = bzData[k] - 0x40;
            if (j > 0)
                x *= (int)Math.pow(64.0, (double)j);

            i += x;
            j++;
        }

        return i;
    }
}