org.sw4j.tool.barcode.random.coder

Class Base58

java.lang.Object

org.sw4j.tool.barcode.random.coder.Base58

public final class Base58
extends Object

This utility class implements a base58 encoding with the alphabet from bitcoin.

This class is thread safe.

Author:

Uwe Plonus <u.plonus@gmail.com>

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(String data) Convert the Base58 string into a byte array.
static byte	divide(byte[] dividend, int base, int divisor) A helper method to divide the dividend (in the byte array) by a divisor.
static String	encode(byte[] data) Convert the data into a Base58 string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

encode

public static String encode(byte[] data)

Convert the data into a Base58 string.

Parameters:

data - the data to encode.

Returns:

the encoded data.

decode

public static byte[] decode(String data)

Convert the Base58 string into a byte array.

Parameters:

data - the base58 string to convert back into a byte array.

Returns:

the decoded data.

divide

public static byte divide(byte[] dividend,
                          int base,
                          int divisor)

A helper method to divide the dividend (in the byte array) by a divisor. The elements of the byte array are treated as figures to the given base.

Parameters:

dividend - the dividend of the division. Contains the quotient of the division after the method is finished.

base - the base (max 256) of the digits in the number (each element is a digit).

divisor - the divisor (max 256) of the division.

Returns:

the remainder of the division.