issrg.acm
Class DefaultSigningUtility

java.lang.Object
  issrg.acm.SigningUtility
      issrg.acm.DefaultSigningUtility

All Implemented Interfaces:

Utility, Signer, java.security.Principal

public final class DefaultSigningUtility
extends SigningUtility
implements java.security.Principal

This is the default signing utility class. It does no signing, but just lets the Manager work and create ACs with Issuer DN in it.

It returns a StubX509Certificate when getVerificationCertificate is invoked. Then it can be used to retrieve the Issuer DN and other default values (Serial Number, Algorithm ID, etc). Note that other methods of the StubX509Certificate throw run-time exceptions, so the object is useless as an X509Certificate otherwise than just getting information to be embedded in the ACs.

As the Principal, it can return the name of the Signer, as input at login time.

Version:

1.0

Author:

A Otenko

Field Summary

static java.lang.String	NO_SIGNATURE_ALGORITHM_ID This is the algorithm Identifier corresponding to "no signing".
protected java.lang.String	signerName

Constructor Summary

DefaultSigningUtility()

DefaultSigningUtility(Registry where)

Method Summary

java.lang.String	getName() This is the stub method for the Principal for retrieving the name of the Principal.
java.lang.String	getSigningAlgorithmID() This method returns NO_SIGNATURE_ALGORITHM_ID as the signature algorithm identifier.
java.security.cert.X509Certificate	getVerificationCertificate() This method lets the caller get the verification certificate so it can be provided in some form to the signature verifier, or can be used to extract the necessary data to form the correct signature information (signer's name, etc).
boolean	isLoggedIn()
void	login(java.awt.Frame frame, java.util.Map Environment)
void	logout(java.awt.Frame frame, java.util.Map Environment)
byte[]	sign(byte[] aci) This method returns an empty array as a signature of any AC.

Methods inherited from class issrg.acm.SigningUtility

registerMe

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.security.Principal

equals, hashCode, toString

Field Detail

signerName

protected java.lang.String signerName

NO_SIGNATURE_ALGORITHM_ID

public static final java.lang.String NO_SIGNATURE_ALGORITHM_ID

This is the algorithm Identifier corresponding to "no signing". Its OID is "1.2.826.0.1.3344810.8.0".

Note that this algorithm Identifier has been invented for the purpose of creating test ACs.

See Also:

Constant Field Values

Constructor Detail

DefaultSigningUtility

public DefaultSigningUtility()

DefaultSigningUtility

public DefaultSigningUtility(Registry where)

Method Detail

sign

public byte[] sign(byte[] aci)

This method returns an empty array as a signature of any AC.

Specified by:

sign in interface Signer

Parameters:

aci - is the binary data to be signed

Returns:

a byte array of the signature

login

public void login(java.awt.Frame frame,
                  java.util.Map Environment)
           throws SecurityException

Specified by:

login in class SigningUtility

Throws:

SecurityException

logout

public void logout(java.awt.Frame frame,
                   java.util.Map Environment)

Specified by:

logout in class SigningUtility

getSigningAlgorithmID

public java.lang.String getSigningAlgorithmID()

This method returns NO_SIGNATURE_ALGORITHM_ID as the signature algorithm identifier. This OID should result in a stupor of any certificate verification software, which is the purpose of such reply. Its meaning is "no signing", which, certainly, is not implemented by any signature verification routines. It would be implemented for testing purposes only.

Note that this algorithm Identifier has been invented for the purposes of creating test ACs.

Specified by:

getSigningAlgorithmID in interface Signer

Returns:

the String representation of the Signing Algorithm ID, as an OID

isLoggedIn

public boolean isLoggedIn()

getVerificationCertificate

public java.security.cert.X509Certificate getVerificationCertificate()

Description copied from interface: Signer

This method lets the caller get the verification certificate so it can be provided in some form to the signature verifier, or can be used to extract the necessary data to form the correct signature information (signer's name, etc). If the user has got several signing certificates (and corresponding verification certificates), he must select the one to use at the login time, not at this point. This method should not display any GUI.

Specified by:

getVerificationCertificate in interface Signer

Returns:

the X509 PKC of the signer

getName

public java.lang.String getName()

This is the stub method for the Principal for retrieving the name of the Principal.

Specified by:

getName in interface java.security.Principal