com.ibm.crypto.fips.provider

Class DESedeCipher

java.lang.Object

javax.crypto.CipherSpi

com.ibm.crypto.fips.provider.DESedeCipher

All Implemented Interfaces:

AlgorithmStatus

public final class DESedeCipher
extends javax.crypto.CipherSpi
implements AlgorithmStatus

This class implements the triple-DES algorithm (DES-EDE) in its various modes (ECB, CFB, OFB, CBC, PCBC) and padding schemes (PKCS5Padding, NoPadding).

Version:

1.24, 04/05/00

Author:

Gigi Ankeny

See Also:

DESCipher

Field Summary

Fields

Modifier and Type	Field and Description
static int	DES_BLOCK_SIZE

Constructor Summary

Constructors

Constructor and Description
DESedeCipher() Creates an instance of DESede cipher with default ECB mode and PKCS5Padding.
DESedeCipher(java.lang.String mode, java.lang.String paddingScheme) Creates an instance of DESede cipher with the requested mode and padding.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isFipsApproved() Module identifies if the cryptographic operation (algorithm) is FIPS certified

Methods inherited from class java.lang.Object

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

Field Detail

DES_BLOCK_SIZE

public static final int DES_BLOCK_SIZE

See Also:

Constant Field Values

Constructor Detail

DESedeCipher

public DESedeCipher()

Creates an instance of DESede cipher with default ECB mode and PKCS5Padding.

Throws:

java.lang.SecurityException - if this constructor fails to authenticate the JCE framework.

DESedeCipher

public DESedeCipher(java.lang.String mode,
            java.lang.String paddingScheme)
             throws java.security.NoSuchAlgorithmException,
                    javax.crypto.NoSuchPaddingException

Creates an instance of DESede cipher with the requested mode and padding.

Parameters:

mode - the cipher mode

paddingScheme - the padding mechanism

Throws:

java.security.NoSuchAlgorithmException - if the required cipher mode is unavailable

javax.crypto.NoSuchPaddingException - if the required padding mechanism is unavailable

Method Detail

isFipsApproved

public boolean isFipsApproved()

Description copied from interface: AlgorithmStatus

Module identifies if the cryptographic operation (algorithm) is FIPS certified

Specified by:

isFipsApproved in interface AlgorithmStatus

See Also:

AlgorithmStatus.isFipsApproved()