Module seppiko.commons.utils

Package org.seppiko.commons.utils.codec

Class Base16

java.lang.Object

org.seppiko.commons.utils.codec.Base16

All Implemented Interfaces:

Serializable, BaseNCodec

public class Base16
extends Object
implements BaseNCodec, Serializable

Base16 encoding and decoding.

Author:

Leonard Woo

See Also:

• RFC4648
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final Base16	BASE16_CASE	The used lowercase alphabet.
static final Base16	BASE16_UPPERCASE	The used uppercase alphabet.
static final Base16	RFC4648	The most widely used Base16 alphabet is defined in RFC 4648.
static final Base16	RFC4648_UPPER	The most widely used Base16 alphabet is defined in RFC 4648 with uppercase.

Fields inherited from interface org.seppiko.commons.utils.codec.BaseNCodec

BIT_WIDTH, BYTES_PER_ENCODED_BLOCK, MASK_2BITS, MASK_4BITS, MASK_5BITS, MASK_6BITS, MASK_8BITS, MASK_UPPER_4BITS

Method Summary

Modifier and Type	Method	Description
byte[]	decode(String str)	convert Base16 to byte array.
String	encodeString(byte[] data)	convert byte array to Base16.

Methods inherited from class java.lang.Object

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

Field Details

RFC4648

public static final Base16 RFC4648

The most widely used Base16 alphabet is defined in RFC 4648.

RFC4648_UPPER

public static final Base16 RFC4648_UPPER

The most widely used Base16 alphabet is defined in RFC 4648 with uppercase.

BASE16_UPPERCASE

public static final Base16 BASE16_UPPERCASE

The used uppercase alphabet.

BASE16_CASE

public static final Base16 BASE16_CASE

The used lowercase alphabet.

Method Details

encodeString

public String encodeString(byte[] data)

convert byte array to Base16.

Specified by:

encodeString in interface BaseNCodec

Parameters:

data - byte array data.

Returns:

hex char array.

decode

public byte[] decode(String str)
              throws IllegalArgumentException,
NullPointerException

convert Base16 to byte array.

Specified by:

decode in interface BaseNCodec

Parameters:

str - hex char array.

Returns:

byte array.

Throws:

IllegalArgumentException - data include invalid character.

NullPointerException - data is null or empty.