Example usage for org.bouncycastle.pkcs.jcajce JcaPKCS10CertificationRequest getAttributes

Introduction

In this page you can find the example usage for org.bouncycastle.pkcs.jcajce JcaPKCS10CertificationRequest getAttributes.

Prototype

public Attribute[] getAttributes(ASN1ObjectIdentifier type) 

Source Link

Document

Return an array of attributes matching the passed in type OID.

Usage

From source file:com.yahoo.athenz.auth.util.Crypto.java

License:Apache License

public static X509Certificate generateX509Certificate(PKCS10CertificationRequest certReq,
        PrivateKey caPrivateKey, X500Name issuer, int validityTimeout, boolean basicConstraints) {

    // set validity for the given number of minutes from now

    Date notBefore = new Date();
    Calendar cal = Calendar.getInstance();
    cal.setTime(notBefore);//w w  w.j ava  2  s.  co  m
    cal.add(Calendar.MINUTE, validityTimeout);
    Date notAfter = cal.getTime();

    // Generate self-signed certificate

    X509Certificate cert = null;
    try {
        JcaPKCS10CertificationRequest jcaPKCS10CertificationRequest = new JcaPKCS10CertificationRequest(
                certReq);
        PublicKey publicKey = jcaPKCS10CertificationRequest.getPublicKey();

        X509v3CertificateBuilder caBuilder = new JcaX509v3CertificateBuilder(issuer,
                BigInteger.valueOf(System.currentTimeMillis()), notBefore, notAfter, certReq.getSubject(),
                publicKey)
                        .addExtension(Extension.basicConstraints, false, new BasicConstraints(basicConstraints))
                        .addExtension(Extension.keyUsage, true,
                                new X509KeyUsage(X509KeyUsage.digitalSignature | X509KeyUsage.keyEncipherment))
                        .addExtension(Extension.extendedKeyUsage, true,
                                new ExtendedKeyUsage(new KeyPurposeId[] { KeyPurposeId.id_kp_clientAuth,
                                        KeyPurposeId.id_kp_serverAuth }));

        // see if we have the dns/rfc822/ip address extensions specified in the csr

        ArrayList<GeneralName> altNames = new ArrayList<>();
        Attribute[] certAttributes = jcaPKCS10CertificationRequest
                .getAttributes(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest);
        if (certAttributes != null && certAttributes.length > 0) {
            for (Attribute attribute : certAttributes) {
                Extensions extensions = Extensions.getInstance(attribute.getAttrValues().getObjectAt(0));
                GeneralNames gns = GeneralNames.fromExtensions(extensions, Extension.subjectAlternativeName);
                if (gns == null) {
                    continue;
                }
                GeneralName[] names = gns.getNames();
                for (int i = 0; i < names.length; i++) {
                    switch (names[i].getTagNo()) {
                    case GeneralName.dNSName:
                    case GeneralName.iPAddress:
                    case GeneralName.rfc822Name:
                        altNames.add(names[i]);
                        break;
                    }
                }
            }
            if (!altNames.isEmpty()) {
                caBuilder.addExtension(Extension.subjectAlternativeName, false,
                        new GeneralNames(altNames.toArray(new GeneralName[altNames.size()])));
            }
        }

        String signatureAlgorithm = getSignatureAlgorithm(caPrivateKey.getAlgorithm(), SHA256);
        ContentSigner caSigner = new JcaContentSignerBuilder(signatureAlgorithm).setProvider(BC_PROVIDER)
                .build(caPrivateKey);

        JcaX509CertificateConverter converter = new JcaX509CertificateConverter().setProvider(BC_PROVIDER);
        cert = converter.getCertificate(caBuilder.build(caSigner));

    } catch (CertificateException ex) {
        LOG.error("generateX509Certificate: Caught CertificateException when generating certificate: "
                + ex.getMessage());
        throw new CryptoException(ex);
    } catch (OperatorCreationException ex) {
        LOG.error(
                "generateX509Certificate: Caught OperatorCreationException when creating JcaContentSignerBuilder: "
                        + ex.getMessage());
        throw new CryptoException(ex);
    } catch (InvalidKeyException ex) {
        LOG.error("generateX509Certificate: Caught InvalidKeySpecException, invalid key spec is being used: "
                + ex.getMessage());
        throw new CryptoException(ex);
    } catch (NoSuchAlgorithmException ex) {
        LOG.error(
                "generateX509Certificate: Caught NoSuchAlgorithmException, check to make sure the algorithm is supported by the provider: "
                        + ex.getMessage());
        throw new CryptoException(ex);
    } catch (Exception ex) {
        LOG.error("generateX509Certificate: unable to generate X509 Certificate: " + ex.getMessage());
        throw new CryptoException("Unable to generate X509 Certificate");
    }

    return cert;
}

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From source file:org.apache.nifi.registry.security.util.CertificateUtils.java

License:Apache License

/**
 * Extract extensions from CSR object//from ww  w  .  j a va  2  s  . c  o m
 */
public static Extensions getExtensionsFromCSR(JcaPKCS10CertificationRequest csr) {
    Attribute[] attributess = csr.getAttributes(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest);
    for (Attribute attribute : attributess) {
        ASN1Set attValue = attribute.getAttrValues();
        if (attValue != null) {
            ASN1Encodable extension = attValue.getObjectAt(0);
            if (extension instanceof Extensions) {
                return (Extensions) extension;
            } else if (extension instanceof DERSequence) {
                return Extensions.getInstance(extension);
            }
        }
    }
    return null;
}

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