RC2ParameterSpec

public class RC2ParameterSpec extends Object
implements 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.

Public 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.

Public Method Summary

boolean
equals(Object obj)
Tests for equality between the specified object and this object.
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.
int
hashCode()
Calculates a hash code value for the object.

Inherited Method Summary

Public Constructors

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.

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. The first 8 bytes of the buffer are copied to protect against subsequent modification.
Throws
IllegalArgumentException if iv is null.

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. The first 8 bytes of the buffer beginning at offset inclusive are copied to protect against subsequent modification.
offset the offset in iv where the 8-byte IV starts.
Throws
IllegalArgumentException if iv is null.

Public Methods

public boolean equals (Object obj)

Tests for equality between the specified object and this object. Two RC2ParameterSpec objects are considered equal if their effective key sizes and IVs are equal. (Two IV references are considered equal if both are null.)

Parameters
obj the object to test for equality with this object.
Returns
  • true if the objects are considered equal, false if obj is null or otherwise.

public int getEffectiveKeyBits ()

Returns the effective key size in bits.

Returns
  • the effective key size in bits.

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. Returns a new array each time this method is called.

public int hashCode ()

Calculates a hash code value for the object. Objects that are equal will also have the same hashcode.