Examples with X509v2AttributeCertificateBuilder org.bouncycastle.cert.X509v2AttributeCertificateBuilder used on opensource projects

Example 1 with X509v2AttributeCertificateBuilder

use of org.bouncycastle.cert.X509v2AttributeCertificateBuilder in project OpenAttestation by OpenAttestation.

the class X509AttrBuilder method build.

public byte[] build() {
    if (notBefore == null || notAfter == null) {
        // 1 day default
        expires(1, TimeUnit.DAYS);
    }
    if (serialNumber == null) {
        dateSerial();
    }
    if (subjectName == null) {
        fault("Subject name is missing");
    }
    if (issuerName == null) {
        fault("Issuer name is missing");
    }
    if (issuerPrivateKey == null) {
        fault("Issuer private key is missing");
    }
    if (attributes.isEmpty()) {
        fault("No attributes selected");
    }
    try {
        if (getFaults().isEmpty()) {
            AlgorithmIdentifier sigAlgId = new DefaultSignatureAlgorithmIdentifierFinder().find("SHA256withRSA");
            AlgorithmIdentifier digAlgId = new DefaultDigestAlgorithmIdentifierFinder().find(sigAlgId);
            ContentSigner authority = null;
            if (issuerPrivateKey != null)
                // create a bouncy castle content signer convert using our existing private key
                authority = new BcRSAContentSignerBuilder(sigAlgId, digAlgId).build(PrivateKeyFactory.createKey(issuerPrivateKey.getEncoded()));
            // second, prepare the attribute certificate
            // which is expected to be a UUID  like this: 33766a63-5c55-4461-8a84-5936577df450
            AttributeCertificateHolder holder = new AttributeCertificateHolder(subjectName);
            AttributeCertificateIssuer issuer = new AttributeCertificateIssuer(issuerName);
            X509v2AttributeCertificateBuilder builder = new X509v2AttributeCertificateBuilder(holder, issuer, serialNumber, notBefore, notAfter);
            for (Attribute attribute : attributes) {
                builder.addAttribute(attribute.oid, attribute.value);
            }
            // fourth, sign the attribute certificate
            if (authority != null) {
                X509AttributeCertificateHolder cert;
                cert = builder.build(authority);
                //X509AttributeCertificate.valueOf(cert.getEncoded());            
                return cert.getEncoded();
            }
        }
        return null;
    } catch (IOException | OperatorCreationException e) {
        fault(e, "cannot sign certificate");
        return null;
    } finally {
        done();
    }
}