/*
* XAdES4j - A Java library for generation and verification of XAdES signatures.
* Copyright (C) 2010 Luis Goncalves.
*
* XAdES4j is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3 of the License, or any later version.
*
* XAdES4j is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with XAdES4j. If not, see <http://www.gnu.org/licenses/>.
*/
package xades4j.providers;
import java.io.InputStream;
import xades4j.properties.ObjectIdentifier;
/**
* Provider of signature policy documents. This is used to verify XAdES-EPES. By
* default, no policies are supported, which means that if a {@code SignaturePolicyDocumentProvider}
* is not supplied, the verification of XAdES-EPES (and only those) will fail.
* @see xades4j.verification.XadesVerificationProfile
* @author Luís
*/
public interface SignaturePolicyDocumentProvider
{
/**
* Gets a stream to the a policy document
* @param sigPolicyId the identifier of the signature policy
* @return the policy document stream or {@code null} if not available
*/
public InputStream getSignaturePolicyDocumentStream(
ObjectIdentifier sigPolicyId);
}