cz.d1x.dxcrypto.common

Class HexRepresentation

java.lang.Object

cz.d1x.dxcrypto.common.HexRepresentation

All Implemented Interfaces:

BytesRepresentation

public final class HexRepresentation
extends Object
implements BytesRepresentation

Implementation that represents byte arrays in HEX form. That means every byte is simply converted to string. E.g. 0x3a = "3a"...

Author:

Zdenek Obst, zdenek.obst-at-gmail.com

Constructor Summary

Constructors

Constructor and Description
HexRepresentation() Creates a new instance of HEX representation that uses default lower-cased letters.
HexRepresentation(boolean useLowerCase) Creates a new instance of HEX representation that uses given casing of letters.

Method Summary

Modifier and Type	Method and Description
byte[]	toBytes(String hex) Converts given String in this representation back to to byte array.
String	toString(byte[] bytes) Converts given byte array to String in this representation.

Methods inherited from class java.lang.Object

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

Constructor Detail

HexRepresentation

public HexRepresentation()

Creates a new instance of HEX representation that uses default lower-cased letters.

HexRepresentation

public HexRepresentation(boolean useLowerCase)

Creates a new instance of HEX representation that uses given casing of letters.

Parameters:

useLowerCase - flag whether use lower cased letters (true) or upper cased (false)

Method Detail

toString

public String toString(byte[] bytes)
                throws IllegalArgumentException

Converts given byte array to String in this representation.

Specified by:

toString in interface BytesRepresentation

Parameters:

bytes - bytes to be converted

Returns:

HEX representation (lower case characters)

Throws:

IllegalArgumentException - possible exception if input is null or cannot be converted

toBytes

public byte[] toBytes(String hex)
               throws IllegalArgumentException

Converts given String in this representation back to to byte array.

Specified by:

toBytes in interface BytesRepresentation

Parameters:

hex - HEX string input to be converted

Returns:

byte array representation

Throws:

IllegalArgumentException - possible exception if input is null or cannot be converted