net.ninthtest.crypto.provider.helix

Class HelixKeySpec

java.lang.Object

net.ninthtest.crypto.provider.helix.HelixKeySpec

All Implemented Interfaces:

KeySpec

public class HelixKeySpec
extends Object
implements KeySpec

A (transparent) specification of the key material that constitutes a Helix secret key.

Version:

1.0

Author:

Matthew Zipay (mattz@ninthtest.net)

Constructor Summary

Constructors

Constructor and Description
HelixKeySpec(byte[] key) Creates a new HelixKeySpec using the first 32 bytes from key as the key material for the Helix key.
HelixKeySpec(byte[] key, int offset) Creates a new HelixKeySpec using the first 32 bytes from key, beginning at offset (inclusive), as the key material for the Helix key.

Method Summary

Modifier and Type	Method and Description
byte[]	getKey() Returns the key material for the Helix cryptographic key.

Methods inherited from class java.lang.Object

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

Constructor Detail

HelixKeySpec

public HelixKeySpec(byte[] key)

Creates a new HelixKeySpec using the first 32 bytes from key as the key material for the Helix key.

If key contains less than 32 bytes, only key.length bytes of key material will be used.

Parameters:

key - the buffer containing Helix key material (bytes are copied to protect against subsequent modification)

HelixKeySpec

public HelixKeySpec(byte[] key,
                    int offset)

Creates a new HelixKeySpec using the first 32 bytes from key, beginning at offset (inclusive), as the key material for the Helix key.

A maximum of 32 bytes of key material will be used. In other words, the number of bytes of key material will be the lesser of (key.length - offset) and 32.

Parameters:

key - the buffer containing Helix key material (bytes are copied to protect against subsequent modification)

offset - the index into key where the Helix key material begins

Method Detail

getKey

public byte[] getKey()

Returns the key material for the Helix cryptographic key.

Returns:

a copy of the Helix key material