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package org.spongycastle.cms;
import org.spongycastle.asn1.x509.AlgorithmIdentifier;
import org.spongycastle.cert.X509CertificateHolder;
import org.spongycastle.operator.ContentVerifier;
import org.spongycastle.operator.ContentVerifierProvider;
import org.spongycastle.operator.DigestCalculator;
import org.spongycastle.operator.DigestCalculatorProvider;
import org.spongycastle.operator.OperatorCreationException;
import org.spongycastle.operator.SignatureAlgorithmIdentifierFinder;
public class SignerInformationVerifier
{
private ContentVerifierProvider verifierProvider;
private DigestCalculatorProvider digestProvider;
private SignatureAlgorithmIdentifierFinder sigAlgorithmFinder;
private CMSSignatureAlgorithmNameGenerator sigNameGenerator;
public SignerInformationVerifier(CMSSignatureAlgorithmNameGenerator sigNameGenerator, SignatureAlgorithmIdentifierFinder sigAlgorithmFinder, ContentVerifierProvider verifierProvider, DigestCalculatorProvider digestProvider)
{
this.sigNameGenerator = sigNameGenerator;
this.sigAlgorithmFinder = sigAlgorithmFinder;
this.verifierProvider = verifierProvider;
this.digestProvider = digestProvider;
}
public boolean hasAssociatedCertificate()
{
return verifierProvider.hasAssociatedCertificate();
}
public X509CertificateHolder getAssociatedCertificate()
{
return verifierProvider.getAssociatedCertificate();
}
public ContentVerifier getContentVerifier(AlgorithmIdentifier signingAlgorithm, AlgorithmIdentifier digestAlgorithm)
throws OperatorCreationException
{
String signatureName = sigNameGenerator.getSignatureName(digestAlgorithm, signingAlgorithm);
return verifierProvider.get(sigAlgorithmFinder.find(signatureName));
}
public DigestCalculator getDigestCalculator(AlgorithmIdentifier algorithmIdentifier)
throws OperatorCreationException
{
return digestProvider.get(algorithmIdentifier);
}
}
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