Example usage for org.bouncycastle.jce.provider X509CertificateObject getEncoded

Introduction

In this page you can find the example usage for org.bouncycastle.jce.provider X509CertificateObject getEncoded.

Prototype

public byte[] getEncoded() throws CertificateEncodingException 

Source Link

Usage

From source file:org.italiangrid.voms.asn1.VOMSACUtils.java

License:Apache License

/**
 * Deserializes the VOMS ACCerts extension
 * //from  w  w w.  j av  a  2  s  .  c  o m
 * @param ac
 *          the VOMS {@link X509AttributeCertificateHolder}
 * @return the parsed array of {@link X509Certificate}
 */
private static X509Certificate[] deserializeACCerts(X509AttributeCertificateHolder ac) {

    List<X509Certificate> certs = new ArrayList<X509Certificate>();

    X509Extension e = ac.getExtension(VOMS_CERTS_OID);

    if (e == null)
        return null;

    ASN1Sequence certSeq = (ASN1Sequence) e.getParsedValue();
    if (certSeq.size() != 1)
        raiseACNonConformantError("unsupported accerts format.");

    // Down one level
    certSeq = (ASN1Sequence) certSeq.getObjectAt(0);

    @SuppressWarnings("unchecked")
    Enumeration<DERSequence> encodedCerts = certSeq.getObjects();

    CertificateFactory cf = null;

    try {
        cf = CertificateFactory.getInstance("X.509", BouncyCastleProvider.PROVIDER_NAME);
    } catch (Exception ex) {
        throw new VOMSError("Certificate factory creation error: " + ex.getMessage(), ex);
    }

    while (encodedCerts.hasMoreElements()) {

        DERSequence s = encodedCerts.nextElement();
        X509CertificateObject certObj = null;
        byte[] certData = null;
        X509Certificate theCert = null;

        try {

            certObj = new X509CertificateObject(
                    X509CertificateStructure.getInstance(ASN1Sequence.getInstance(s)));
            certData = certObj.getEncoded();
            theCert = (X509Certificate) cf.generateCertificate(new ByteArrayInputStream(certData));

        } catch (CertificateParsingException ex) {
            throw new VOMSError("Certificate parsing error: " + ex.getMessage(), ex);
        } catch (CertificateEncodingException ex) {
            throw new VOMSError("Certificate encoding error: " + ex.getMessage(), ex);
        } catch (CertificateException ex) {
            throw new VOMSError("Error generating certificate from parsed data: " + ex.getMessage(), ex);
        }

        certs.add(theCert);
    }

    return certs.toArray(new X509Certificate[certs.size()]);
}

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From source file:org.jmrtd.lds.SignedDataUtil.java

License:Open Source License

public static X509Certificate getDocSigningCertificate(SignedData signedData) throws CertificateException {
    byte[] certSpec = null;
    ASN1Set certs = signedData.getCertificates();
    if (certs == null || certs.size() <= 0) {
        return null;
    }/*from   w  ww . ja va 2 s.  com*/
    if (certs.size() != 1) {
        LOGGER.warning("Found " + certs.size() + " certificates");
    }
    X509CertificateObject certObject = null;
    for (int i = 0; i < certs.size(); i++) {
        org.bouncycastle.asn1.x509.Certificate certAsASN1Object = org.bouncycastle.asn1.x509.Certificate
                .getInstance((ASN1Sequence) certs.getObjectAt(i));
        certObject = new X509CertificateObject(certAsASN1Object); // NOTE: >= BC 1.48
        //      certObject = new X509CertificateObject(X509CertificateStructure.getInstance(certAsASN1Object)); // NOTE: <= BC 1.47
        certSpec = certObject.getEncoded();
    }

    /*
     * NOTE: we could have just returned that X509CertificateObject here,
     * but by reconstructing it using the client's default provider we hide
     * the fact that we're using BC.
     */
    try {
        CertificateFactory factory = CertificateFactory.getInstance("X.509");
        X509Certificate cert = (X509Certificate) factory
                .generateCertificate(new ByteArrayInputStream(certSpec));
        return cert;
    } catch (Exception e) {
        /* NOTE: Reconstructing using preferred provider didn't work?!?! */
        return certObject;
    }
}

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