org.hccp.util
Class Base64Utility

java.lang.Object
  |
  +--org.hccp.util.Base64Utility

public class Base64Utility

extends java.lang.Object

Utility for encoding binary data to base 64 and decoding base 64 back into binary.

Field Summary

static java.lang.String	BASE_64_BUFFER
static java.lang.String	BUFFER
static char[]	LOOKUP_TABLE
static char	PAD
static int	PAD_INDEX

Constructor Summary

Base64Utility()

Method Summary

static byte[]	decode(char[] data) Returns decoded binary data.
static byte[]	decode(java.lang.String data) Returns decoded binary data.
static char[]	encode(byte[] data) Encodes binary data to base 64 character data.

Methods inherited from class java.lang.Object

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

Field Detail

LOOKUP_TABLE

public static char[] LOOKUP_TABLE

PAD

public static char PAD

PAD_INDEX

public static int PAD_INDEX

BUFFER

public static java.lang.String BUFFER

BASE_64_BUFFER

public static java.lang.String BASE_64_BUFFER

Constructor Detail

Base64Utility

public Base64Utility()

Method Detail

encode

public static char[] encode(byte[] data)

Encodes binary data to base 64 character data.

From RFC 2045:

The encoded output stream must be represented in lines of no more than 76 characters each. All line breaks or other characters not found in Table 1 must be ignored by decoding software. In base64 data, characters other than those in Table 1, line breaks, and other white space probably indicate a transmission error, about which a warning message or even a message rejection might be appropriate under some circumstances.

NOTE: This method will return a string of characters without inserting line breaks.

Parameters:

data - binary data to encode

Returns:

base 64 encoded array of chars without inserting any newline characters

decode

public static byte[] decode(java.lang.String data)

Returns decoded binary data.

Parameters:

data - base 64 encoded character data

Returns:

decode

public static byte[] decode(char[] data)

Returns decoded binary data.

Parameters:

data - base 64 encoded character data

Returns: