jp.co.ricoh.dsdk.scard.option.security
Class DES3SignCredential

java.lang.Object
  jp.co.ricoh.dsdk.scard.option.security.AbstractSignCredential
      jp.co.ricoh.dsdk.scard.option.security.DES3SignCredential

All Implemented Interfaces:

SignCredential

public class DES3SignCredential

extends jp.co.ricoh.dsdk.scard.option.security.AbstractSignCredential

Sample credential to perform a DES-ede signing operation . This credential does not hash a message nor pad input blocks which are too small. It simply performs a single-block DES-ede encryption.

Constructor Summary

DES3SignCredential(byte[] key)
Uses a 24 bytes array as the key material to generate a DES-ede key and initialize an instance .

DES3SignCredential(java.security.Key des3Key)
Create an instance with a DES-ede key .

Method Summary

int	getInputLength() Return the input credential`s length that the cryptographic algorithm can process .
byte[]	sign(byte[] data) Sign/encrypt a block of data .

Methods inherited from class java.lang.Object

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

Constructor Detail

DES3SignCredential

public DES3SignCredential(byte[] key)

Uses a 24 bytes array as the key material to generate a DES-ede key and initialize an instance .

Parameters:

key - the buffer with the DES-ede key material .

DES3SignCredential

public DES3SignCredential(java.security.Key des3Key)

Create an instance with a DES-ede key .

Parameters:

des3Key - a DES-ede key .

Method Detail

getInputLength

public int getInputLength()

Description copied from interface: SignCredential

Return the input credential`s length that the cryptographic algorithm can process .

Returns:

the length of credential .

sign

public byte[] sign(byte[] data)

Description copied from interface: SignCredential

Sign/encrypt a block of data .

Specified by:

sign in interface SignCredential

Parameters:

data - The credential to be signed . Its length must match the length obtained with getInputLength() method.

Returns:

the signature/cryptogram .