javax.crypto.spec
Class RC2ParameterSpec

java.lang.Object
  |
  +--javax.crypto.spec.RC2ParameterSpec

public class RC2ParameterSpec
extends java.lang.Object
implements java.security.spec.AlgorithmParameterSpec

This class specifies the parameters used with the RC2 algorithm.

The parameters consist of an effective key size and optionally an 8-byte initialization vector (IV) (only in feedback mode).

This class can be used to initialize a Cipher object that implements the RC2 algorithm.


Constructor Summary
RC2ParameterSpec(int effectiveKeyBits)
          Constructs a parameter set for RC2 from the given effective key size (in bits).
RC2ParameterSpec(int effectiveKeyBits, byte[] iv)
          Constructs a parameter set for RC2 from the given effective key size (in bits) and an 8-byte IV.
RC2ParameterSpec(int effectiveKeyBits, byte[] iv, int offset)
          Constructs a parameter set for RC2 from the given effective key size (in bits) and IV.
 
Method Summary
 int getEffectiveKeyBits()
          Returns the effective key size in bits.
 byte[] getIV()
          Returns the IV or null if this parameter set does not contain an IV.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

RC2ParameterSpec

public RC2ParameterSpec(int effectiveKeyBits)
Constructs a parameter set for RC2 from the given effective key size (in bits).
Parameters:
effectiveKeyBits - the effective key size in bits.

RC2ParameterSpec

public RC2ParameterSpec(int effectiveKeyBits,
                        byte[] iv)
Constructs a parameter set for RC2 from the given effective key size (in bits) and an 8-byte IV.

The bytes that constitute the IV are those between iv[0] and iv[7] inclusive.

Parameters:
effectiveKeyBits - the effective key size in bits.
iv - the buffer with the 8-byte IV.

RC2ParameterSpec

public RC2ParameterSpec(int effectiveKeyBits,
                        byte[] iv,
                        int offset)
Constructs a parameter set for RC2 from the given effective key size (in bits) and IV.

The IV is taken from iv, starting at offset inclusive. The bytes that constitute the IV are those between iv[offset] and iv[offset+7] inclusive.

Parameters:
effectiveKeyBits - the effective key size in bits.
iv - the buffer with the IV.
offset - the offset in iv where the 8-byte IV starts.
Method Detail

getEffectiveKeyBits

public int getEffectiveKeyBits()
Returns the effective key size in bits.
Returns:
the effective key size in bits.

getIV

public byte[] getIV()
Returns the IV or null if this parameter set does not contain an IV.
Returns:
the IV or null if this parameter set does not contain an IV.