org.bouncycastle.its.ITSCertificate Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcpkix-fips Show documentation

The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified.

There is a newer version: 2.1.9

Show newest version

package org.bouncycastle.its;

import java.io.IOException;
import java.io.OutputStream;

import org.bouncycastle.its.operator.ECDSAEncoder;
import org.bouncycastle.its.operator.ITSContentVerifierProvider;
import org.bouncycastle.oer.OEREncoder;
import org.bouncycastle.oer.its.ieee1609dot2.CertificateBase;
import org.bouncycastle.oer.its.ieee1609dot2.IssuerIdentifier;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.PublicEncryptionKey;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.Signature;
import org.bouncycastle.oer.its.template.ieee1609dot2.IEEE1609dot2;
import org.bouncycastle.operator.ContentVerifier;
import org.bouncycastle.util.Encodable;

public class ITSCertificate
    implements Encodable
{
    private final CertificateBase certificate;

    public ITSCertificate(CertificateBase certificate)
    {
        this.certificate = certificate;
    }

    public IssuerIdentifier getIssuer()
    {
        return certificate.getIssuer();
    }

    public ITSValidityPeriod getValidityPeriod()
    {
        return new ITSValidityPeriod(certificate.getToBeSigned().getValidityPeriod());
    }

    /**
     * Return the certificate's public encryption key, if present.
     *
     * @return
     */
    public ITSPublicEncryptionKey getPublicEncryptionKey()
    {
        PublicEncryptionKey encryptionKey = certificate.getToBeSigned().getEncryptionKey();

        if (encryptionKey != null)
        {
            return new ITSPublicEncryptionKey(encryptionKey);
        }

        return null;
    }

    public boolean isSignatureValid(ITSContentVerifierProvider verifierProvider)
        throws Exception
    {
        ContentVerifier contentVerifier = verifierProvider.get(certificate.getSignature().getChoice());

        OutputStream verOut = contentVerifier.getOutputStream();


        verOut.write(
            OEREncoder.toByteArray(certificate.getToBeSigned(),
                IEEE1609dot2.ToBeSignedCertificate.build()));

        verOut.close();

        Signature sig = certificate.getSignature();

        return contentVerifier.verify(ECDSAEncoder.toX962(sig));
    }

    public CertificateBase toASN1Structure()
    {
        return certificate;
    }

    public byte[] getEncoded()
        throws IOException
    {
        return OEREncoder.toByteArray(certificate, IEEE1609dot2.CertificateBase.build());
    }
}