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The BSD License Copyright (c) 2010-2012 RIPE NCC All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of the RIPE NCC nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package net.ripe.rpki.commons.crypto.util;
 
 
 import java.util.List;
 
 public class BouncyCastleUtil {
 
 
     private BouncyCastleUtil() {
     }
 
     public static final class X509CRLHolderStoreSelector implements Selector {
         @Override
         public boolean match(Object obj) {
             return obj instanceof X509CRLHolder;
         }
 
         @Override
         public Object clone() {
             return this;
         }
     }
 
     public static final class X509CertificateHolderStoreSelector implements Selector {
         @Override
         public boolean match(Object obj) {
             return obj instanceof X509CertificateHolder;
         }
 
         @Override
         public Object clone() {
             return this;
         }
     }

    
NOTE: JcaX509ExtensionUtils is not tread safe. We always need to get a new instance of it.

Returns:
a new instance of JcaX509ExtensionUtils
 
     private static JcaX509ExtensionUtils newJcaX509ExtensionUtils() {
         try {
             return new JcaX509ExtensionUtils();
         } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
    }
    public static AuthorityKeyIdentifier createAuthorityKeyIdentifier(PublicKey publicKey) {
        return newJcaX509ExtensionUtils().createAuthorityKeyIdentifier(publicKey);
    }
    public static SubjectKeyIdentifier createSubjectKeyIdentifier(PublicKey publicKey) {
        return newJcaX509ExtensionUtils().createSubjectKeyIdentifier(publicKey);
    }
    public static X500Name principalToName(X500Principal dn) {
        return X500Name.getInstance(dn.getEncoded());
    }
        return SubjectPublicKeyInfo.getInstance(key.getEncoded());
    }
        return new JcaX509CertificateConverter().getCertificate(holder);
    }
    public static List<? extends X509CertificateextractCertificates(CMSSignedDataParser signedDataParserthrows StoreExceptionCMSExceptionCertificateException {
        @SuppressWarnings("unchecked")
        Collection<X509CertificateHolderholders = signedDataParser.getCertificates().getMatches(new X509CertificateHolderStoreSelector());
        List<X509Certificateresult = new ArrayList<X509Certificate>();
        for (X509CertificateHolder holder : holders) {
            result.add(holderToCertificate(holder));
        }
        return result;
    }
    public static X509CRL holderToCrl(X509CRLHolder holderthrows CRLException {
        return new JcaX509CRLConverter().getCRL(holder);
    }
    public static List<? extends X509CRLextractCrls(CMSSignedDataParser signedDataParserthrows StoreExceptionCMSExceptionCRLException {
        @SuppressWarnings("unchecked")
        Collection<X509CRLHolderholders = signedDataParser.getCRLs().getMatches(new X509CRLHolderStoreSelector());
        List<X509CRLresult = new ArrayList<X509CRL>();
        for (X509CRLHolder holder : holders) {
            result.add(holderToCrl(holder));
        }
        return result;
    }
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