io.warp10.crypto

Class OrderPreservingBase64

java.lang.Object

io.warp10.crypto.OrderPreservingBase64

public class OrderPreservingBase64
extends java.lang.Object

This class implements a Base64 like encoding which preserves the lexicographic order of the original byte arrays in the encoded ones.

This is needed so we can compare encoded byte arrays without having to first decode them

Constructor Summary

Constructors

Constructor and Description
OrderPreservingBase64()

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(byte[] data) Decode byte [ ].
static byte[]	decode(byte[] data, int offset, int len) Decode byte [ ].
static byte[]	encode(byte[] data) Encode byte [ ].
static byte[]	encode(byte[] data, int offset, int len) Encode byte [ ].
static void	encodeToStream(byte[] data, java.io.OutputStream out) Encode to stream.
static void	encodeToStream(java.io.OutputStream out, byte[] data, int offset, int datalen) Encode to stream.
static void	encodeToWriter(byte[] data, java.io.Writer out) Encode to writer.
static void	encodeToWriter(java.io.Writer out, byte[] data, int offset, int datalen) Encode to writer.

Methods inherited from class java.lang.Object

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

Constructor Detail

OrderPreservingBase64

public OrderPreservingBase64()

Method Detail

encode

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

Encode byte [ ].

Parameters:

data - the data

Returns:

the byte [ ]

encode

public static byte[] encode(byte[] data,
                            int offset,
                            int len)

Encode byte [ ].

Parameters:

data - the data

offset - the offset

len - the len

Returns:

the byte [ ]

encodeToStream

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

Encode to stream.

Parameters:

data - the data

out - the out

Throws:

java.io.IOException - the io exception

encodeToStream

public static void encodeToStream(java.io.OutputStream out,
                                  byte[] data,
                                  int offset,
                                  int datalen)
                           throws java.io.IOException

Encode to stream.

Parameters:

out - the out

data - the data

offset - the offset

datalen - the datalen

Throws:

java.io.IOException - the io exception

encodeToWriter

public static void encodeToWriter(byte[] data,
                                  java.io.Writer out)
                           throws java.io.IOException

Encode to writer.

Parameters:

data - the data

out - the out

Throws:

java.io.IOException - the io exception

encodeToWriter

public static void encodeToWriter(java.io.Writer out,
                                  byte[] data,
                                  int offset,
                                  int datalen)
                           throws java.io.IOException

Encode to writer.

Parameters:

out - the out

data - the data

offset - the offset

datalen - the datalen

Throws:

java.io.IOException - the io exception

decode

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

Decode byte [ ].

Parameters:

data - the data

Returns:

the byte [ ]

decode

public static byte[] decode(byte[] data,
                            int offset,
                            int len)

Decode byte [ ].

Parameters:

data - the data

offset - the offset

len - the len

Returns:

the byte [ ]