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/*******************************************************************************
* Copyright (c) 2005, 2012 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.signedcontent;
import java.security.cert.Certificate;
/**
* A SignerInfo object represents a single signer chain.
*
* This interface is not intended to be implemented by clients.
*
* @since 3.4
* @noimplement This interface is not intended to be implemented by clients.
*/
public interface SignerInfo {
/**
* Returns the certificate chain
* @return the certificate chain
*/
public Certificate[] getCertificateChain();
/**
* Returns the certificate trust anchor used to establish authenticity.
* If authenticity cannot be established then null is returned.
* @return the trust anchor
*/
public Certificate getTrustAnchor();
/**
* Returns true if the trust anchor has been authenticated. This is a convenience
* method equivalent to calling {@link #getTrustAnchor()} != null
* @return true if the the signer info is trusted
*/
public boolean isTrusted();
/**
* Returns the MessageDigest algorithm used to verify content
* signed by this signer info.
*
* @return the algorithm
* @deprecated This information is not readily available using the JAR APIs
* included with Java. A value {@literal unknown} will be returned.
*/
public String getMessageDigestAlgorithm();
}