javax.crypto.spec
Class IvParameterSpec

java.lang.Object
  |
  +--javax.crypto.spec.IvParameterSpec

All Implemented Interfaces:

java.security.spec.AlgorithmParameterSpec

public class IvParameterSpec

extends java.lang.Object

implements java.security.spec.AlgorithmParameterSpec

This class specifies an initialization vector (IV). IVs are used by ciphers in feedback mode, e.g., DES in CBC mode.

Constructor Summary

IvParameterSpec(byte[] iv)
Uses the bytes in iv as the IV.

IvParameterSpec(byte[] iv, int offset, int len)
Uses the first len bytes in iv, beginning at offset inclusive, as the IV.

Method Summary

byte[]

getIV() Returns the initialization vector (IV).

Methods inherited from class java.lang.Object

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

Constructor Detail

IvParameterSpec

public IvParameterSpec(byte[] iv)

Uses the bytes in iv as the IV.

Parameters:

iv - the buffer with the IV

IvParameterSpec

public IvParameterSpec(byte[] iv,
                       int offset,
                       int len)

Uses the first len bytes in iv, beginning at offset inclusive, as the IV.

The bytes that constitute the IV are those between iv[offset] and iv[offset+len-1] inclusive.

Parameters:

iv - the buffer with the IV

offset - the offset in iv where the IV starts

len - the number of IV bytes

Method Detail

getIV

public byte[] getIV()

Returns the initialization vector (IV).

Returns:

the initialization vector (IV)