org.bouncycastle.cms.bc.BcRSASignerInfoVerifierBuilder Maven / Gradle / Ivy

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The Bouncy Castle Java CMS and S/MIME APIs for handling the CMS and S/MIME protocols. This jar contains CMS and S/MIME APIs for JDK 1.6. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs. If the S/MIME API is used, the JavaMail API and the Java activation framework will also be needed.

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package org.bouncycastle.cms.bc;

import java.security.cert.CertificateException;

import org.bouncycastle.cert.X509CertificateHolder;
import org.bouncycastle.cms.SignerInformationVerifier;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.operator.DigestAlgorithmIdentifierFinder;
import org.bouncycastle.operator.DigestCalculatorProvider;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.operator.bc.BcRSAContentVerifierProviderBuilder;

public class BcRSASignerInfoVerifierBuilder
{
    private BcRSAContentVerifierProviderBuilder contentVerifierProviderBuilder;
    private DigestCalculatorProvider digestCalculatorProvider;

    public BcRSASignerInfoVerifierBuilder(DigestAlgorithmIdentifierFinder digestAlgorithmFinder, DigestCalculatorProvider digestCalculatorProvider)
    {
        this.contentVerifierProviderBuilder = new BcRSAContentVerifierProviderBuilder(digestAlgorithmFinder);
        this.digestCalculatorProvider = digestCalculatorProvider;
    }

    public SignerInformationVerifier build(X509CertificateHolder certHolder)
        throws OperatorCreationException, CertificateException
    {
        return new SignerInformationVerifier(contentVerifierProviderBuilder.build(certHolder), digestCalculatorProvider);
    }

    public SignerInformationVerifier build(AsymmetricKeyParameter pubKey)
        throws OperatorCreationException
    {
        return new SignerInformationVerifier(contentVerifierProviderBuilder.build(pubKey), digestCalculatorProvider);
    }
}