org.jpedal.io.CertificateReader Maven / Gradle / Ivy
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/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/java-pdf-library-support/
*
* (C) Copyright 1997-2013, IDRsolutions and Contributors.
*
* This file is part of JPedal
*
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* CertificateReader.java
* ---------------
*/
package org.jpedal.io;
import java.security.Key;
import java.security.PrivateKey;
import java.security.cert.Certificate;
import org.bouncycastle.cms.CMSEnvelopedData;
import org.bouncycastle.cms.RecipientInformation;
import org.bouncycastle.cms.jcajce.JceKeyTransEnvelopedRecipient;
import org.jpedal.utils.LogWriter;
public class CertificateReader {
//
public static byte[] readCertificate(byte[][] recipients, Certificate certificate, Key key) {
byte[] envelopedData = null;
/**
* values for BC
*/
String provider = "BC";
/**
* loop through all and get data if match found
*/
for (byte[] recipient : recipients) {
try {
CMSEnvelopedData recipientEnvelope = new CMSEnvelopedData(recipient);
Object[] recipientList = recipientEnvelope.getRecipientInfos().getRecipients().toArray();
int listCount = recipientList.length;
for (int ii = 0; ii < listCount; ii++) {
RecipientInformation recipientInfo = (RecipientInformation) recipientList[ii];
if (recipientInfo.getRID().match(certificate)) {
envelopedData = recipientInfo.getContent(new JceKeyTransEnvelopedRecipient((PrivateKey)key).setProvider(provider));
ii = listCount;
}
}
}
catch (Exception e) {
// tell user and log
if (LogWriter.isOutput()) LogWriter.writeLog("Exception: " + e.getMessage());
}
}
return envelopedData;
}
//
}