org.qbroker.common

Class Base64Encoder

java.lang.Object

org.qbroker.common.Base64Encoder

public class Base64Encoder
extends java.lang.Object

Base64Encoder has encryption support.

Author:

yannanlu@yahoo.com

Constructor Summary

Constructors

Constructor and Description
Base64Encoder(java.lang.String name, int key)

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(byte[] input)
byte[]	decrypt(byte[] input) returns decrypted Base64 decoded bytes
static java.lang.String	decrypt(java.lang.String key, java.lang.String encrypted) returns base64 decoded value of an encrypted string with the given prefix
static byte[]	encode(byte[] input)
byte[]	encrypt(byte[] input) returns encrypted Base64 encoded bytes
static java.lang.String	encrypt(java.lang.String key, java.lang.String value) returns encrypted Base64 encoded string with a given prefix of the key
java.lang.String	getName()
static java.lang.String	scramble(java.lang.String header, java.lang.String encoded) verifies the given header on a base64 encoded string and scrambles it with a random shuffling.
static java.lang.String	unscramble(java.lang.String header, java.lang.String scrambled) unscrambles a scrambled string and verifies the given header on the end result.

Methods inherited from class java.lang.Object

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

Constructor Detail

Base64Encoder

public Base64Encoder(java.lang.String name,
                     int key)

Method Detail

encrypt

public byte[] encrypt(byte[] input)

returns encrypted Base64 encoded bytes

decrypt

public byte[] decrypt(byte[] input)

returns decrypted Base64 decoded bytes

encode

public static byte[] encode(byte[] input)

decode

public static byte[] decode(byte[] input)

encrypt

public static java.lang.String encrypt(java.lang.String key,
                                       java.lang.String value)
                                throws java.io.UnsupportedEncodingException

returns encrypted Base64 encoded string with a given prefix of the key

Throws:

java.io.UnsupportedEncodingException

decrypt

public static java.lang.String decrypt(java.lang.String key,
                                       java.lang.String encrypted)
                                throws java.io.UnsupportedEncodingException

returns base64 decoded value of an encrypted string with the given prefix

Throws:

java.io.UnsupportedEncodingException

scramble

public static java.lang.String scramble(java.lang.String header,
                                        java.lang.String encoded)
                                 throws java.io.UnsupportedEncodingException

verifies the given header on a base64 encoded string and scrambles it with a random shuffling. It returns the scrambled string upon success or the original string otherwise.

Throws:

java.io.UnsupportedEncodingException

unscramble

public static java.lang.String unscramble(java.lang.String header,
                                          java.lang.String scrambled)
                                   throws java.io.UnsupportedEncodingException

unscrambles a scrambled string and verifies the given header on the end result. It returns the unscrambled string upon success or the scrambled string otherwise.

Throws:

java.io.UnsupportedEncodingException

getName

public java.lang.String getName()