Examples with CertificationRequestInfo org.bouncycastle.asn1.pkcs.CertificationRequestInfo used on opensource projects

Example 1 with CertificationRequestInfo

use of org.bouncycastle.asn1.pkcs.CertificationRequestInfo in project nhin-d by DirectProject.

the class CertGenerator method createCertFromCSR.

public static X509Certificate createCertFromCSR(PKCS10CertificationRequest certReq, CertCreateFields signerCert) throws Exception {
    certReq.verify();
    final CertificationRequestInfo reqInfo = certReq.getCertificationRequestInfo();
    final X509V3CertificateGenerator v1CertGen = new X509V3CertificateGenerator();
    final Calendar start = Calendar.getInstance();
    final Calendar end = Calendar.getInstance();
    end.add(Calendar.YEAR, 3);
    v1CertGen.setSerialNumber(BigInteger.valueOf(generatePositiveRandom()));
    // issuer is the parent cert
    v1CertGen.setIssuerDN(signerCert.getSignerCert().getSubjectX500Principal());
    v1CertGen.setNotBefore(start.getTime());
    v1CertGen.setNotAfter(end.getTime());
    v1CertGen.setSubjectDN(new X509Principal(reqInfo.getSubject().toString()));
    v1CertGen.setPublicKey(certReq.getPublicKey());
    v1CertGen.setSignatureAlgorithm("SHA256WithRSAEncryption");
    final ASN1Set attributesAsn1Set = reqInfo.getAttributes();
    X509Extensions certificateRequestExtensions = null;
    for (int i = 0; i < attributesAsn1Set.size(); ++i) {
        // There should be only only one attribute in the set. (that is, only
        // the `Extension Request`, but loop through to find it properly)
        final DEREncodable derEncodable = attributesAsn1Set.getObjectAt(i);
        if (derEncodable instanceof DERSequence) {
            final Attribute attribute = new Attribute((DERSequence) attributesAsn1Set.getObjectAt(i));
            if (attribute.getAttrType().equals(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest)) {
                // The `Extension Request` attribute is present.
                final ASN1Set attributeValues = attribute.getAttrValues();
                // Assume that it is the first value of the set.
                if (attributeValues.size() >= 1) {
                    certificateRequestExtensions = new X509Extensions((ASN1Sequence) attributeValues.getObjectAt(0));
                // No need to search any more.
                //break;
                }
            }
        }
    }
    @SuppressWarnings("unchecked") Enumeration<DERObjectIdentifier> oids = certificateRequestExtensions.oids();
    while (oids.hasMoreElements()) {
        DERObjectIdentifier oid = oids.nextElement();
        X509Extension ex = certificateRequestExtensions.getExtension(oid);
        v1CertGen.addExtension(oid, ex.isCritical(), X509Extension.convertValueToObject(ex));
    }
    return v1CertGen.generate((PrivateKey) signerCert.getSignerKey(), CryptoExtensions.getJCEProviderName());
}