content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.camel.quarkus.component.as2.it;
  
  import java.io.IOException;
  import java.math.BigInteger;
  import java.security.GeneralSecurityException;
  import java.security.KeyPair;
  import java.security.PrivateKey;
  import java.security.PublicKey;
  import java.security.cert.X509Certificate;
  import java.util.Date;
  
  import org.bouncycastle.asn1.x500.X500Name;
  import org.bouncycastle.asn1.x509.AuthorityKeyIdentifier;
  import org.bouncycastle.asn1.x509.Extension;
  import org.bouncycastle.asn1.x509.SubjectKeyIdentifier;
  import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
  import org.bouncycastle.cert.X509v3CertificateBuilder;
  import org.bouncycastle.cert.bc.BcX509ExtensionUtils;
  import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
  import org.bouncycastle.cert.jcajce.JcaX509v3CertificateBuilder;
  import org.bouncycastle.operator.OperatorCreationException;
  import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
  
  public final class Utils {
      //
      // certificate serial number seed.
      //
      static int serialNo = 1;
  
      private Utils() {
      }
  
      public static AuthorityKeyIdentifier createAuthorityKeyId(PublicKey pub) throws IOException {
          SubjectPublicKeyInfo info = SubjectPublicKeyInfo.getInstance(pub.getEncoded());
  
          BcX509ExtensionUtils utils = new BcX509ExtensionUtils();
          return utils.createAuthorityKeyIdentifier(info);
      }
  
      public static SubjectKeyIdentifier createSubjectKeyId(PublicKey pub) throws IOException {
          SubjectPublicKeyInfo info = SubjectPublicKeyInfo.getInstance(pub.getEncoded());
  
          return new BcX509ExtensionUtils().createSubjectKeyIdentifier(info);
      }
  
      /**
       * create a basic X509 certificate from the given keys
       */
      public static X509Certificate makeCertificate(KeyPair subKP, String subDN, KeyPair issKP, String issDN)
              throws GeneralSecurityException, IOException, OperatorCreationException {
          PublicKey subPub = subKP.getPublic();
          PrivateKey issPriv = issKP.getPrivate();
          PublicKey issPub = issKP.getPublic();
  
          X509v3CertificateBuilder v3CertGen = new JcaX509v3CertificateBuilder(
                  new X500Name(issDN),
                  BigInteger.valueOf(serialNo++), new Date(System.currentTimeMillis()),
                  new Date(System.currentTimeMillis() + (1000L * 60 * 60 * 24 * 100)), new X500Name(subDN), subPub);
  
          v3CertGen.addExtension(Extension.subjectKeyIdentifier, false, createSubjectKeyId(subPub));
  
          v3CertGen.addExtension(Extension.authorityKeyIdentifier, false, createAuthorityKeyId(issPub));
  
          return new JcaX509CertificateConverter().setProvider("BC").getCertificate(
                  v3CertGen.build(new JcaContentSignerBuilder("MD5withRSA").setProvider("BC").build(issPriv)));
      }
  
  }
  