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/*******************************************************************************
 * Copyright (c) 2006, 2012 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.osgi.internal.provisional.verifier;

import java.security.cert.Certificate;
import java.util.Date;

/**
 * This class represents a chain of certificates.
 * 
 * EXPERIMENTAL. This class or interface has been added as
 * part of a work in progress. There is no guarantee that this API will
 * work or that it will remain the same. Please do not use this API without
 * consulting with the equinox team.
 * 
 */
public interface CertificateChain {
	/**
	 * Returns the list of X500 distinguished names that make up the certificate chain. Each
	 * distinguished name is separated by a ';'. The first distinguished name is the signer 
	 * and the last is the root Certificate Authority.
	 * @return the list of X500 distinguished names that make up the certificate chain
	 */
	public String getChain();

	/**
	 * Retruns all certificates in this certificate chain
	 * @return all certificates in this certificate chain
	 */
	public Certificate[] getCertificates();

	/**
	 * Returns the first certificate of the certificate chain
	 * @return the first certificate of the certificate chain
	 */
	public Certificate getSigner();

	/**
	 * Returns the root certificate of the certificate chain
	 * @return the foot certificate of the certificate chain
	 */
	public Certificate getRoot();

	/**
	 * Returns true if this certificate chain is trusted
	 * @return true if this certificate chain is trusted
	 */
	boolean isTrusted();

	/**
	 * Return the signing time for this signer.
	 * 
	 * @return	null if there is a signing time for this signer null otherwise
	 */
	public Date getSigningTime();
}