Example usage for org.bouncycastle.x509 X509V3CertificateGenerator setNotBefore

Introduction

In this page you can find the example usage for org.bouncycastle.x509 X509V3CertificateGenerator setNotBefore.

Prototype

public void setNotBefore(Date date) 

Source Link

Usage

From source file:test.unit.be.fedict.eid.dss.spi.utils.PkiTestUtils.java

License:Open Source License

static X509Certificate generateCertificate(PublicKey subjectPublicKey, String subjectDn, DateTime notBefore,
        DateTime notAfter, X509Certificate issuerCertificate, PrivateKey issuerPrivateKey, boolean caFlag,
        int pathLength, String crlUri, String ocspUri, KeyUsage keyUsage, boolean tsa)
        throws IOException, InvalidKeyException, IllegalStateException, NoSuchAlgorithmException,
        SignatureException, CertificateException {
    String signatureAlgorithm = "SHA1withRSA";
    X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
    certificateGenerator.reset();//  w w  w.j a  v  a2  s .  c o m
    certificateGenerator.setPublicKey(subjectPublicKey);
    certificateGenerator.setSignatureAlgorithm(signatureAlgorithm);
    certificateGenerator.setNotBefore(notBefore.toDate());
    certificateGenerator.setNotAfter(notAfter.toDate());
    X509Principal issuerDN;
    if (null != issuerCertificate) {
        issuerDN = new X509Principal(issuerCertificate.getSubjectX500Principal().toString());
    } else {
        issuerDN = new X509Principal(subjectDn);
    }
    certificateGenerator.setIssuerDN(issuerDN);
    certificateGenerator.setSubjectDN(new X509Principal(subjectDn));
    certificateGenerator.setSerialNumber(new BigInteger(128, new SecureRandom()));

    certificateGenerator.addExtension(X509Extensions.SubjectKeyIdentifier, false,
            createSubjectKeyId(subjectPublicKey));
    PublicKey issuerPublicKey;
    issuerPublicKey = subjectPublicKey;
    certificateGenerator.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            createAuthorityKeyId(issuerPublicKey));

    if (caFlag) {
        if (-1 == pathLength) {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(true));
        } else {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(pathLength));
        }
    }

    if (null != crlUri) {
        GeneralName gn = new GeneralName(GeneralName.uniformResourceIdentifier, new DERIA5String(crlUri));
        //GeneralNames gns = new GeneralNames(new DERSequence(gn));
        //DistributionPointName dpn = new DistributionPointName(0, gns);
        DistributionPointName dpn = new DistributionPointName(0, gn);
        DistributionPoint distp = new DistributionPoint(dpn, null, null);
        certificateGenerator.addExtension(X509Extensions.CRLDistributionPoints, false, new DERSequence(distp));
    }

    if (null != ocspUri) {
        GeneralName ocspName = new GeneralName(GeneralName.uniformResourceIdentifier, ocspUri);
        AuthorityInformationAccess authorityInformationAccess = new AuthorityInformationAccess(
                X509ObjectIdentifiers.ocspAccessMethod, ocspName);
        certificateGenerator.addExtension(X509Extensions.AuthorityInfoAccess.getId(), false,
                authorityInformationAccess);
    }

    if (null != keyUsage) {
        certificateGenerator.addExtension(X509Extensions.KeyUsage, true, keyUsage);
    }

    if (tsa) {
        certificateGenerator.addExtension(X509Extensions.ExtendedKeyUsage, true,
                new ExtendedKeyUsage(KeyPurposeId.id_kp_timeStamping));
    }

    X509Certificate certificate;
    certificate = certificateGenerator.generate(issuerPrivateKey);

    /*
     * Next certificate factory trick is needed to make sure that the
     * certificate delivered to the caller is provided by the default
     * security provider instead of BouncyCastle. If we don't do this trick
     * we might run into trouble when trying to use the CertPath validator.
     */
    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
    certificate = (X509Certificate) certificateFactory
            .generateCertificate(new ByteArrayInputStream(certificate.getEncoded()));
    return certificate;
}

---

From source file:test.unit.be.fedict.eid.idp.common.saml2.AuthenticationResponseTest.java

License:Open Source License

private X509Certificate generateCertificate(PublicKey subjectPublicKey, String subjectDn, DateTime notBefore,
        DateTime notAfter, X509Certificate issuerCertificate, PrivateKey issuerPrivateKey) throws Exception {

    X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
    certificateGenerator.reset();//w  w w . ja  v  a2s.  co m
    certificateGenerator.setPublicKey(subjectPublicKey);
    certificateGenerator.setSignatureAlgorithm("SHA1WithRSAEncryption");
    certificateGenerator.setNotBefore(notBefore.toDate());
    certificateGenerator.setNotAfter(notAfter.toDate());

    X509Principal issuerDN;
    if (null != issuerCertificate) {
        issuerDN = new X509Principal(issuerCertificate.getSubjectX500Principal().toString());
    } else {
        issuerDN = new X509Principal(subjectDn);
    }
    certificateGenerator.setIssuerDN(issuerDN);
    certificateGenerator.setSubjectDN(new X509Principal(subjectDn));
    certificateGenerator.setSerialNumber(new BigInteger(128, new SecureRandom()));

    certificateGenerator.addExtension(X509Extensions.SubjectKeyIdentifier, false,
            createSubjectKeyId(subjectPublicKey));

    PublicKey issuerPublicKey;
    if (null != issuerCertificate) {
        issuerPublicKey = issuerCertificate.getPublicKey();
    } else {
        issuerPublicKey = subjectPublicKey;
    }
    certificateGenerator.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            createAuthorityKeyId(issuerPublicKey));

    X509Certificate certificate;
    certificate = certificateGenerator.generate(issuerPrivateKey);

    /*
     * Next certificate factory trick is needed to make sure that the
     * certificate delivered to the caller is provided by the default
     * security provider instead of BouncyCastle. If we don't do this trick
     * we might run into trouble when trying to use the CertPath validator.
     */
    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
    certificate = (X509Certificate) certificateFactory
            .generateCertificate(new ByteArrayInputStream(certificate.getEncoded()));
    return certificate;
}

---

From source file:test.unit.be.fedict.eid.idp.protocol.ws_federation.WSFederationMetadataHttpServletTest.java

License:Open Source License

private X509Certificate generateSelfSignedCertificate(KeyPair keyPair, String subjectDn, DateTime notBefore,
        DateTime notAfter) throws Exception {
    PublicKey subjectPublicKey = keyPair.getPublic();
    PrivateKey issuerPrivateKey = keyPair.getPrivate();
    String signatureAlgorithm = "SHA1WithRSAEncryption";
    X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
    certificateGenerator.reset();// w  w  w .java2 s . c o m
    certificateGenerator.setPublicKey(subjectPublicKey);
    certificateGenerator.setSignatureAlgorithm(signatureAlgorithm);
    certificateGenerator.setNotBefore(notBefore.toDate());
    certificateGenerator.setNotAfter(notAfter.toDate());
    X509Principal issuerDN = new X509Principal(subjectDn);
    certificateGenerator.setIssuerDN(issuerDN);
    certificateGenerator.setSubjectDN(new X509Principal(subjectDn));
    certificateGenerator.setSerialNumber(new BigInteger(128, new SecureRandom()));

    certificateGenerator.addExtension(X509Extensions.SubjectKeyIdentifier, false,
            createSubjectKeyId(subjectPublicKey));
    PublicKey issuerPublicKey;
    issuerPublicKey = subjectPublicKey;
    certificateGenerator.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            createAuthorityKeyId(issuerPublicKey));

    certificateGenerator.addExtension(X509Extensions.BasicConstraints, false, new BasicConstraints(true));

    X509Certificate certificate;
    certificate = certificateGenerator.generate(issuerPrivateKey);

    /*
     * Next certificate factory trick is needed to make sure that the
     * certificate delivered to the caller is provided by the default
     * security provider instead of BouncyCastle. If we don't do this trick
     * we might run into trouble when trying to use the CertPath validator.
     */
    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
    certificate = (X509Certificate) certificateFactory
            .generateCertificate(new ByteArrayInputStream(certificate.getEncoded()));
    return certificate;
}

---

From source file:test.unit.be.fedict.eid.tsl.TrustTestUtils.java

License:Open Source License

public static X509Certificate generateCertificate(PublicKey subjectPublicKey, String subjectDn,
        DateTime notBefore, DateTime notAfter, X509Certificate issuerCertificate, PrivateKey issuerPrivateKey,
        boolean caFlag, int pathLength, String crlUri, String ocspUri, KeyUsage keyUsage)
        throws IOException, InvalidKeyException, IllegalStateException, NoSuchAlgorithmException,
        SignatureException, CertificateException {
    String signatureAlgorithm = "SHA1withRSA";
    X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
    certificateGenerator.reset();/*from   ww  w .  ja v a2s  .  c om*/
    certificateGenerator.setPublicKey(subjectPublicKey);
    certificateGenerator.setSignatureAlgorithm(signatureAlgorithm);
    certificateGenerator.setNotBefore(notBefore.toDate());
    certificateGenerator.setNotAfter(notAfter.toDate());
    X509Principal issuerDN;
    if (null != issuerCertificate) {
        issuerDN = new X509Principal(issuerCertificate.getSubjectX500Principal().toString());
    } else {
        issuerDN = new X509Principal(subjectDn);
    }
    certificateGenerator.setIssuerDN(issuerDN);
    certificateGenerator.setSubjectDN(new X509Principal(subjectDn));
    certificateGenerator.setSerialNumber(new BigInteger(128, new SecureRandom()));

    certificateGenerator.addExtension(X509Extensions.SubjectKeyIdentifier, false,
            createSubjectKeyId(subjectPublicKey));
    PublicKey issuerPublicKey;
    issuerPublicKey = subjectPublicKey;
    certificateGenerator.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            createAuthorityKeyId(issuerPublicKey));

    if (caFlag) {
        if (-1 == pathLength) {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(true));
        } else {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(pathLength));
        }
    }

    if (null != crlUri) {
        GeneralName gn = new GeneralName(GeneralName.uniformResourceIdentifier, new DERIA5String(crlUri));
        GeneralNames gns = new GeneralNames(new DERSequence(gn));
        DistributionPointName dpn = new DistributionPointName(0, gns);
        DistributionPoint distp = new DistributionPoint(dpn, null, null);
        certificateGenerator.addExtension(X509Extensions.CRLDistributionPoints, false, new DERSequence(distp));
    }

    if (null != ocspUri) {
        GeneralName ocspName = new GeneralName(GeneralName.uniformResourceIdentifier, ocspUri);
        AuthorityInformationAccess authorityInformationAccess = new AuthorityInformationAccess(
                X509ObjectIdentifiers.ocspAccessMethod, ocspName);
        certificateGenerator.addExtension(X509Extensions.AuthorityInfoAccess.getId(), false,
                authorityInformationAccess);
    }

    if (null != keyUsage) {
        certificateGenerator.addExtension(X509Extensions.KeyUsage, true, keyUsage);
    }

    X509Certificate certificate;
    certificate = certificateGenerator.generate(issuerPrivateKey);

    /*
     * Next certificate factory trick is needed to make sure that the
     * certificate delivered to the caller is provided by the default
     * security provider instead of BouncyCastle. If we don't do this trick
     * we might run into trouble when trying to use the CertPath validator.
     */
    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
    certificate = (X509Certificate) certificateFactory
            .generateCertificate(new ByteArrayInputStream(certificate.getEncoded()));
    return certificate;
}

---

From source file:test.unit.be.fedict.trust.TrustTestUtils.java

License:Open Source License

@SuppressWarnings("deprecation")
public static X509Certificate generateCertificate(PublicKey subjectPublicKey, String subjectDn,
        DateTime notBefore, DateTime notAfter, X509Certificate issuerCertificate, PrivateKey issuerPrivateKey,
        boolean caFlag, int pathLength, String crlUri, String ocspUri, KeyUsage keyUsage,
        String signatureAlgorithm, boolean tsa, boolean includeSKID, boolean includeAKID,
        PublicKey akidPublicKey, String certificatePolicy, Boolean qcCompliance, boolean ocspResponder)
        throws IOException, InvalidKeyException, IllegalStateException, NoSuchAlgorithmException,
        SignatureException, CertificateException {

    X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
    certificateGenerator.reset();/*w w w .j av  a  2s  .c o  m*/
    certificateGenerator.setPublicKey(subjectPublicKey);
    certificateGenerator.setSignatureAlgorithm(signatureAlgorithm);
    certificateGenerator.setNotBefore(notBefore.toDate());
    certificateGenerator.setNotAfter(notAfter.toDate());
    X509Principal issuerDN;
    if (null != issuerCertificate) {
        issuerDN = new X509Principal(issuerCertificate.getSubjectX500Principal().toString());
    } else {
        issuerDN = new X509Principal(subjectDn);
    }
    certificateGenerator.setIssuerDN(issuerDN);
    certificateGenerator.setSubjectDN(new X509Principal(subjectDn));
    certificateGenerator.setSerialNumber(new BigInteger(128, new SecureRandom()));

    if (includeSKID) {
        certificateGenerator.addExtension(X509Extensions.SubjectKeyIdentifier, false,
                createSubjectKeyId(subjectPublicKey));
    }

    if (includeAKID) {
        PublicKey issuerPublicKey;
        if (null != akidPublicKey) {
            issuerPublicKey = akidPublicKey;
        } else if (null != issuerCertificate) {
            issuerPublicKey = issuerCertificate.getPublicKey();
        } else {
            issuerPublicKey = subjectPublicKey;
        }
        certificateGenerator.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
                createAuthorityKeyId(issuerPublicKey));
    }

    if (caFlag) {
        if (-1 == pathLength) {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(true));
        } else {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(pathLength));
        }
    }

    if (null != crlUri) {
        GeneralName gn = new GeneralName(GeneralName.uniformResourceIdentifier, new DERIA5String(crlUri));
        GeneralNames gns = new GeneralNames(gn);
        DistributionPointName dpn = new DistributionPointName(0, gns);
        DistributionPoint distp = new DistributionPoint(dpn, null, null);
        certificateGenerator.addExtension(X509Extensions.CRLDistributionPoints, false, new DERSequence(distp));
    }

    if (null != ocspUri) {
        GeneralName ocspName = new GeneralName(GeneralName.uniformResourceIdentifier, ocspUri);
        AuthorityInformationAccess authorityInformationAccess = new AuthorityInformationAccess(
                X509ObjectIdentifiers.ocspAccessMethod, ocspName);
        certificateGenerator.addExtension(X509Extensions.AuthorityInfoAccess.getId(), false,
                authorityInformationAccess);
    }

    if (null != keyUsage) {
        certificateGenerator.addExtension(X509Extensions.KeyUsage, true, keyUsage);
    }

    if (null != qcCompliance) {
        ASN1EncodableVector vec = new ASN1EncodableVector();
        if (qcCompliance) {
            vec.add(new QCStatement(QCStatement.id_etsi_qcs_QcCompliance));
        } else {
            vec.add(new QCStatement(QCStatement.id_etsi_qcs_RetentionPeriod));
        }
        certificateGenerator.addExtension(X509Extensions.QCStatements, true, new DERSequence(vec));

    }

    if (tsa) {
        certificateGenerator.addExtension(X509Extensions.ExtendedKeyUsage, true,
                new ExtendedKeyUsage(KeyPurposeId.id_kp_timeStamping));
    }

    if (ocspResponder) {
        certificateGenerator.addExtension(OCSPObjectIdentifiers.id_pkix_ocsp_nocheck, false, new DERNull());

        certificateGenerator.addExtension(X509Extensions.ExtendedKeyUsage, true,
                new ExtendedKeyUsage(KeyPurposeId.id_kp_OCSPSigning));
    }

    X509Certificate certificate;
    certificate = certificateGenerator.generate(issuerPrivateKey);

    /*
     * Next certificate factory trick is needed to make sure that the
     * certificate delivered to the caller is provided by the default
     * security provider instead of BouncyCastle. If we don't do this trick
     * we might run into trouble when trying to use the CertPath validator.
     */
    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
    certificate = (X509Certificate) certificateFactory
            .generateCertificate(new ByteArrayInputStream(certificate.getEncoded()));
    return certificate;
}

---

From source file:test.unit.test.be.fedict.eid.applet.model.XmlSignatureServiceBeanTest.java

License:Open Source License

private X509Certificate generateCertificate(PublicKey subjectPublicKey, String subjectDn, DateTime notBefore,
        DateTime notAfter, X509Certificate issuerCertificate, PrivateKey issuerPrivateKey, boolean caFlag,
        int pathLength, String ocspUri, KeyUsage keyUsage) throws IOException, InvalidKeyException,
        IllegalStateException, NoSuchAlgorithmException, SignatureException, CertificateException {
    String signatureAlgorithm = "SHA1withRSA";
    X509V3CertificateGenerator certificateGenerator = new X509V3CertificateGenerator();
    certificateGenerator.reset();/*from   w ww  .  j  a  v a  2s  .co  m*/
    certificateGenerator.setPublicKey(subjectPublicKey);
    certificateGenerator.setSignatureAlgorithm(signatureAlgorithm);
    certificateGenerator.setNotBefore(notBefore.toDate());
    certificateGenerator.setNotAfter(notAfter.toDate());
    X509Principal issuerDN;
    if (null != issuerCertificate) {
        issuerDN = new X509Principal(issuerCertificate.getSubjectX500Principal().toString());
    } else {
        issuerDN = new X509Principal(subjectDn);
    }
    certificateGenerator.setIssuerDN(issuerDN);
    certificateGenerator.setSubjectDN(new X509Principal(subjectDn));
    certificateGenerator.setSerialNumber(new BigInteger(128, new SecureRandom()));

    certificateGenerator.addExtension(X509Extensions.SubjectKeyIdentifier, false,
            createSubjectKeyId(subjectPublicKey));
    PublicKey issuerPublicKey;
    issuerPublicKey = subjectPublicKey;
    certificateGenerator.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            createAuthorityKeyId(issuerPublicKey));

    if (caFlag) {
        if (-1 == pathLength) {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(true));
        } else {
            certificateGenerator.addExtension(X509Extensions.BasicConstraints, false,
                    new BasicConstraints(pathLength));
        }
    }

    if (null != ocspUri) {
        GeneralName ocspName = new GeneralName(GeneralName.uniformResourceIdentifier, ocspUri);
        AuthorityInformationAccess authorityInformationAccess = new AuthorityInformationAccess(
                X509ObjectIdentifiers.ocspAccessMethod, ocspName);
        certificateGenerator.addExtension(X509Extensions.AuthorityInfoAccess.getId(), false,
                authorityInformationAccess);
    }

    if (null != keyUsage) {
        certificateGenerator.addExtension(X509Extensions.KeyUsage, true, keyUsage);
    }

    X509Certificate certificate;
    certificate = certificateGenerator.generate(issuerPrivateKey);

    /*
     * Next certificate factory trick is needed to make sure that the
     * certificate delivered to the caller is provided by the default
     * security provider instead of BouncyCastle. If we don't do this trick
     * we might run into trouble when trying to use the CertPath validator.
     */
    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
    certificate = (X509Certificate) certificateFactory
            .generateCertificate(new ByteArrayInputStream(certificate.getEncoded()));
    return certificate;
}

---

From source file:TorJava.PrivateKeyHandler.java

License:Open Source License

public java.security.cert.X509Certificate[] getCertificateChain(String alias) {
    try {//  w w  w  .j  av a2  s  . c o  m
        org.bouncycastle.x509.X509V3CertificateGenerator generator = new org.bouncycastle.x509.X509V3CertificateGenerator();
        generator.reset();
        generator.setSerialNumber(BigInteger.valueOf(42));
        generator.setNotBefore(new Date(System.currentTimeMillis() - 24L * 3600 * 1000));
        generator.setNotAfter(new Date(System.currentTimeMillis() + 365L * 24 * 3600 * 1000));
        /*generator.setIssuerDN(new org.bouncycastle.asn1.x509.X509Name( "CN=TorJava, O=TOR"));
        generator.setSubjectDN(new org.bouncycastle.asn1.x509.X509Name( "CN=TorJava, O=TOR"));*/
        generator.setIssuerDN(new org.bouncycastle.asn1.x509.X509Name("CN=TorJava"));
        generator.setSubjectDN(new org.bouncycastle.asn1.x509.X509Name("CN=TorJava"));
        generator.setPublicKey(keypair.getPublic());
        generator.setSignatureAlgorithm("SHA1WITHRSA");
        java.security.cert.X509Certificate x509 = generator.generateX509Certificate(keypair.getPrivate());
        java.security.cert.X509Certificate[] x509s = new java.security.cert.X509Certificate[2];
        // send the same certificate twice works fine with the default implementation of tor!
        x509s[0] = x509; // myself
        x509s[1] = x509; // a certificate for myself
        return x509s;
    } catch (Exception e) {
        Logger.logTLS(Logger.ERROR, "Caught exception: " + e.getMessage());
    }
    return null;
}

---

From source file:util.X509Helper.java

private X509Certificate generateCertificate(KeyPair keyPair, boolean selfSigned, Principal issuerDN) {
    try {/*from w w w .  j  a v  a  2  s.c  om*/
        X500Principal x500Principal = new X500Principal("C=" + Constants.access.getSubjectCountry() + ",ST="
                + Constants.access.getSubjectState() + ",L=" + Constants.access.getSubjectLocality() + ",O="
                + Constants.access.getSubjectOrganization() + ",OU="
                + Constants.access.getSubjectOrganizationUnit() + ",CN="
                + Constants.access.getSubjectCommonName());

        X509V3CertificateGenerator certGen = new X509V3CertificateGenerator();
        certGen.setSerialNumber(new BigInteger(Constants.access.getSerialNumber()));
        certGen.setIssuerDN(selfSigned ? x500Principal : new X500Principal(issuerDN.toString()));
        certGen.setNotBefore(Constants.access.getNotBefore());
        certGen.setNotAfter(Constants.access.getNotAfter());
        certGen.setSubjectDN(x500Principal);
        certGen.setPublicKey(keyPair.getPublic());
        certGen.setSignatureAlgorithm(Constants.access.getPublicKeySignatureAlgorithm());

        //TODO:SET EXTENSIONS

        //        certGen.addExtension(X509Extensions.BasicConstraints, uiParams.isExtensionBasicConstraintsIsCritical(), basicConstraint);

        return certGen.generateX509Certificate(keyPair.getPrivate(), "BC");
    } catch (Exception ex) {
        Logger.getLogger(X509Helper.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
}

---

From source file:utils.Tools.java

License:Apache License

/**
 * Generate a sample V3 certificate to use as an intermediate CA certificate
 * @author David Hook/*from  w  w w  .j  av  a2  s  .  c  o m*/
 */
public static X509Certificate generateIntermediateCert(PublicKey intKey, PrivateKey caKey,
        X509Certificate caCert) throws Exception {
    X509V3CertificateGenerator certGen = new X509V3CertificateGenerator();

    certGen.setSerialNumber(BigInteger.valueOf(1));
    certGen.setIssuerDN(new X509Name(caCert.getSubjectX500Principal().getName()));
    certGen.setNotBefore(new Date(System.currentTimeMillis()));
    certGen.setNotAfter(new Date(System.currentTimeMillis() + VALIDITY_PERIOD));
    certGen.setSubjectDN(new X509Name(new X500Principal("CN=Test Intermediate Certificate").getName()));
    certGen.setPublicKey(intKey);
    certGen.setSignatureAlgorithm("SHA1WithRSAEncryption");

    certGen.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            new AuthorityKeyIdentifierStructure(caCert));
    certGen.addExtension(X509Extensions.SubjectKeyIdentifier, false, new SubjectKeyIdentifierStructure(intKey));
    certGen.addExtension(X509Extensions.BasicConstraints, true, new BasicConstraints(0));
    certGen.addExtension(X509Extensions.KeyUsage, true,
            new KeyUsage(KeyUsage.digitalSignature | KeyUsage.keyCertSign | KeyUsage.cRLSign));

    return certGen.generate(caKey, "BC");
}

---

From source file:utils.Tools.java

License:Apache License

/**
 * Generate a sample V3 certificate to use as an end entity certificate
 * @author David Hook/*from   w ww  .j ava  2 s.  c  om*/
 */
public static X509Certificate generateEndEntityCert(PublicKey entityKey, PrivateKey caKey,
        X509Certificate caCert) throws Exception {
    X509V3CertificateGenerator certGen = new X509V3CertificateGenerator();

    certGen.setSerialNumber(BigInteger.valueOf(1));
    certGen.setIssuerDN(new X509Name(caCert.getSubjectX500Principal().getName()));
    certGen.setNotBefore(new Date(System.currentTimeMillis()));
    certGen.setNotAfter(new Date(System.currentTimeMillis() + VALIDITY_PERIOD));
    certGen.setSubjectDN(new X509Name(new X500Principal("CN=Test End Certificate").getName()));
    certGen.setPublicKey(entityKey);
    certGen.setSignatureAlgorithm("SHA1WithRSAEncryption");

    certGen.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            new AuthorityKeyIdentifierStructure(caCert));
    certGen.addExtension(X509Extensions.SubjectKeyIdentifier, false,
            new SubjectKeyIdentifierStructure(entityKey));
    certGen.addExtension(X509Extensions.BasicConstraints, true, new BasicConstraints(false));
    certGen.addExtension(X509Extensions.KeyUsage, true,
            new KeyUsage(KeyUsage.digitalSignature | KeyUsage.keyEncipherment));

    return certGen.generate(caKey, "BC");
}

---

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