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/*
* Copyright (c) 2013, 2016 Eike Stepper (Loehne, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
* Christian W. Damus (CEA LIST) - bug 418454: factored out authentication from ISessionProtocol
*/
package org.eclipse.emf.cdo.spi.server;
import org.eclipse.net4j.util.security.CredentialsUpdateOperation;
import org.eclipse.net4j.util.security.DiffieHellman.Client.Response;
import org.eclipse.net4j.util.security.DiffieHellman.Server.Challenge;
/**
* @author Eike Stepper
*
* @since 4.3
* @noextend This interface is not intended to be extended by clients.
* @noimplement This interface is not intended to be implemented by clients.
*/
public interface IAuthenticationProtocol
{
/**
* Sends a challenge to the client to authenticate the user attempting to
* or already connected.
*
* @since 4.2
*/
public Response sendAuthenticationChallenge(Challenge challenge) throws Exception;
/**
* Sends a challenge to the client to change the authenticated user's credentials.
* This is an optional operation; implementators may simply throw
* {@link UnsupportedOperationException}.
*
* @since 4.3
*
* @throws UnsupportedOperationException if credentials change is not supported
*/
public Response sendCredentialsChallenge(Challenge challenge, String userID, CredentialsUpdateOperation operation) throws Exception;
}
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