org.spongycastle.util.encoders

Class UrlBase64

java.lang.Object

org.spongycastle.util.encoders.UrlBase64

public class UrlBase64
extends java.lang.Object

Convert binary data to and from UrlBase64 encoding. This is identical to Base64 encoding, except that the padding character is "." and the other non-alphanumeric characters are "-" and "_" instead of "+" and "/".

The purpose of UrlBase64 encoding is to provide a compact encoding of binary data that is safe for use as an URL parameter. Base64 encoding does not produce encoded values that are safe for use in URLs, since "/" can be interpreted as a path delimiter; "+" is the encoded form of a space; and "=" is used to separate a name from the corresponding value in an URL parameter.

Constructor Summary

Constructors

Constructor and Description
UrlBase64()

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(byte[] data) Decode the URL safe base 64 encoded input data - white space will be ignored.
static int	decode(byte[] data, java.io.OutputStream out) decode the URL safe base 64 encoded byte data writing it to the given output stream, whitespace characters will be ignored.
static byte[]	decode(java.lang.String data) decode the URL safe base 64 encoded String data - whitespace will be ignored.
static int	decode(java.lang.String data, java.io.OutputStream out) Decode the URL safe base 64 encoded String data writing it to the given output stream, whitespace characters will be ignored.
static byte[]	encode(byte[] data) Encode the input data producing a URL safe base 64 encoded byte array.
static int	encode(byte[] data, java.io.OutputStream out) Encode the byte data writing it to the given output stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

UrlBase64

public UrlBase64()

Method Detail

encode

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

Encode the input data producing a URL safe base 64 encoded byte array.

Returns:

a byte array containing the URL safe base 64 encoded data.

encode

public static int encode(byte[] data,
                         java.io.OutputStream out)
                  throws java.io.IOException

Encode the byte data writing it to the given output stream.

Returns:

the number of bytes produced.

Throws:

java.io.IOException

decode

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

Decode the URL safe base 64 encoded input data - white space will be ignored.

Returns:

a byte array representing the decoded data.

decode

public static int decode(byte[] data,
                         java.io.OutputStream out)
                  throws java.io.IOException

decode the URL safe base 64 encoded byte data writing it to the given output stream, whitespace characters will be ignored.

Returns:

the number of bytes produced.

Throws:

java.io.IOException

decode

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

decode the URL safe base 64 encoded String data - whitespace will be ignored.

Returns:

a byte array representing the decoded data.

decode

public static int decode(java.lang.String data,
                         java.io.OutputStream out)
                  throws java.io.IOException

Decode the URL safe base 64 encoded String data writing it to the given output stream, whitespace characters will be ignored.

Returns:

the number of bytes produced.

Throws:

java.io.IOException