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/*******************************************************************************
* Copyright (c) 2006, 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.internal.signedcontent;
import java.security.*;
import java.security.cert.CertificateException;
import java.util.*;
public class PKCS7DateParser {
static Date parseDate(PKCS7Processor pkcs7Processor, String signer, String file) throws CertificateException, NoSuchAlgorithmException, InvalidKeyException, SignatureException, NoSuchProviderException {
Map<int[], byte[]> unsignedAttrs = pkcs7Processor.getUnsignedAttrs();
if (unsignedAttrs != null) {
// get the timestamp construct
byte[] timeStampConstruct = retrieveTimeStampConstruct(unsignedAttrs);
// there is a timestamp in the signer info
if (timeStampConstruct != null) {
PKCS7Processor timestampProcess = new PKCS7Processor(timeStampConstruct, 0, timeStampConstruct.length, signer, file);
timestampProcess.verifyCerts();
pkcs7Processor.setTSACertificates(timestampProcess.getCertificates());
return timestampProcess.getSigningTime();
}
}
return null;
}
private static byte[] retrieveTimeStampConstruct(Map<int[], byte[]> unsignedAttrs) {
Set<int[]> objIDs = unsignedAttrs.keySet();
Iterator<int[]> iter = objIDs.iterator();
while (iter.hasNext()) {
int[] objID = iter.next();
if (Arrays.equals(SignedContentConstants.TIMESTAMP_OID, objID)) {
return unsignedAttrs.get(objID);
}
}
return null;
}
}
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