org.acplt.oncrpc.web
Class Base64

java.lang.Object
  org.acplt.oncrpc.web.Base64

public abstract class Base64
extends java.lang.Object

The abstract Base64 class provides static methods to convert back and forth between binary and base64-encoded data.

Field Summary

private static byte[]	decodingBase64Alephbeth Mapping from base64 alphabet to binary 0-63.
private static byte[]	encodingBase64Alephbeth Mapping from binary 0-63 to base64 alphabet according to RFC 2045.

Constructor Summary

Base64()

Method Summary

static int	decode(byte[] encodedData, int encodedOffset, int length, byte[] binaryData, int binaryOffset) Converts base64 encoded data into binary data.
static int	encode(byte[] binaryData, int binaryOffset, int length, byte[] encodedData, int encodedOffset) Converts binary data into base64 encoded data.

Methods inherited from class java.lang.Object

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

Field Detail

encodingBase64Alephbeth

private static final byte[] encodingBase64Alephbeth

Mapping from binary 0-63 to base64 alphabet according to RFC 2045. (Yes, I do know that the Hebrew alphabet has only 22 letters.)

decodingBase64Alephbeth

private static final byte[] decodingBase64Alephbeth

Mapping from base64 alphabet to binary 0-63.

Constructor Detail

Base64

public Base64()

Method Detail

encode

public static int encode(byte[] binaryData,
                         int binaryOffset,
                         int length,
                         byte[] encodedData,
                         int encodedOffset)

Converts binary data into base64 encoded data.

Parameters:

binaryData - Binary data to be encoded.

binaryOffset - Offset into binaryData where to the data to be encoded begins.

length - Length of data to encode.

encodedData - Buffer receiving base64 encoded data.

encodedOffset - Offset into encodedData where the store base64 encoded data.

Returns:

Length of encoded base64 data.

decode

public static int decode(byte[] encodedData,
                         int encodedOffset,
                         int length,
                         byte[] binaryData,
                         int binaryOffset)

Converts base64 encoded data into binary data.

Parameters:

encodedData - Base64 encoded data.

encodedOffset - Offset into encodedData where the base64 encoded data starts.

length - Length of encoded data.

binaryData - Decoded (binary) data.

binaryOffset - Offset into binaryData where to store the decoded binary data.

Returns:

Length of decoded binary data.