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javax.crypto.spec
Class IvParameterSpec


java.lang.Object
  extended by javax.crypto.spec.IvParameterSpec
All Implemented Interfaces:
AlgorithmParameterSpec

public class IvParameterSpec
extends Object
implements AlgorithmParameterSpec

This class specifies an initialization vector (IV). Examples which use IVs are ciphers in feedback mode, e.g., DES in CBC mode and RSA ciphers with OAEP encoding operation.

Since:
1.4

Constructor Summary
IvParameterSpec (byte[] iv)
          Creates an IvParameterSpec object using           Uses the bytes in iv as the IV.
IvParameterSpec (byte[] iv, int offset, int len)
          Creates an IvParameterSpec object using           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)
Creates an IvParameterSpec object using Uses the bytes in iv as the IV.

Parameters:
iv - the buffer with the IV. The contents of the buffer are copied to protect against subsequent modification. iv - the buffer with the IV

IvParameterSpec


public IvParameterSpec(byte[] iv,
                       int offset,
                       int len)
Creates an IvParameterSpec object using 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. The first len bytes of the buffer beginning at offset inclusive are copied to protect against subsequent modification. iv - the buffer with the IV
offset - the offset in iv where the IV starts. starts
len - the number of IV bytes. bytes
Method Detail

getIV


public byte[] getIV()
Returns the initialization vector (IV).

Returns:
the initialization vector (IV). Returns a new array each time this method is called. the initialization vector (IV)