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-jdk15to18 Show documentation

The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

There is a newer version: 1.79

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());
    }
}