Example usage for org.bouncycastle.cert X509AttributeCertificateHolder getSignature

Introduction

In this page you can find the example usage for org.bouncycastle.cert X509AttributeCertificateHolder getSignature.

Prototype

public byte[] getSignature() 

Source Link

Document

Return the bytes making up the signature associated with this attribute certificate.

Usage

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

License:Apache License

/**
 * Deserializes the information in a VOMS attribute certificate.
 * //from w  w w  . j a  v a 2  s. co  m
 * @param ac
 *          a VOMS {@link AttributeCertificate}
 * @return a {@link VOMSAttribute} object which provides more convenient
 *         access to the VOMS authorization information
 */
public static VOMSAttribute deserializeVOMSAttributes(AttributeCertificate ac) {

    VOMSAttributesImpl attrs = new VOMSAttributesImpl();

    X509AttributeCertificateHolder acHolder = new X509AttributeCertificateHolder(ac);
    Attribute[] asn1Attrs = acHolder.getAttributes(VOMS_FQANS_OID);

    for (Attribute a : asn1Attrs) {
        DERObject theVOMSDerObject = a.getAttributeValues()[0].getDERObject();
        IetfAttrSyntax attrSyntax = new IetfAttrSyntax(ASN1Sequence.getInstance(theVOMSDerObject));

        String policyAuthority = policyAuthoritySanityChecks(attrSyntax);

        // The policy authority string has the following format:
        // <vo name>://<hostname>:<port>

        attrs.setVO(policyAuthority.substring(0, policyAuthority.indexOf(POLICY_AUTHORITY_SEP)));
        attrs.setHost(policyAuthority.substring(policyAuthority.indexOf(POLICY_AUTHORITY_SEP) + 3,
                policyAuthority.lastIndexOf(":")));
        attrs.setPort(Integer.parseInt(policyAuthority.substring(policyAuthority.lastIndexOf(":") + 1)));

        attrs.setFQANs(deserializeFQANs(attrSyntax));

        attrs.setNotBefore(acHolder.getNotBefore());
        attrs.setNotAfter(acHolder.getNotAfter());
        attrs.setSignature(acHolder.getSignature());
        attrs.setGenericAttributes(deserializeGAs(acHolder));
        attrs.setAACertificates(deserializeACCerts(acHolder));
        attrs.setTargets(deserializeACTargets(acHolder));

        attrs.setVOMSAC(acHolder);

        try {

            attrs.setIssuer(new X500Principal(acHolder.getIssuer().getNames()[0].getEncoded()));
            attrs.setHolder(new X500Principal(acHolder.getHolder().getIssuer()[0].getEncoded()));
            attrs.setHolderSerialNumber(acHolder.getHolder().getSerialNumber());

        } catch (IOException e) {
            throw new VOMSError("Error parsing attribute certificate issuer  or holder name: " + e.getMessage(),
                    e);
        }
    }

    return attrs;
}

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