org.bouncycastle.pkcs.bc.BcPKCS12PBMac1CalculatorBuilderProvider Maven / Gradle / Ivy

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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.

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package org.bouncycastle.pkcs.bc;

import org.bouncycastle.asn1.pkcs.PBMAC1Params;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.operator.MacCalculator;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.pkcs.PKCS12MacCalculatorBuilder;
import org.bouncycastle.pkcs.PKCS12MacCalculatorBuilderProvider;

import java.io.IOException;

public class BcPKCS12PBMac1CalculatorBuilderProvider
    implements PKCS12MacCalculatorBuilderProvider
{
    public PKCS12MacCalculatorBuilder get(final AlgorithmIdentifier algorithmIdentifier)
    {
        return new PKCS12MacCalculatorBuilder()
        {
            public MacCalculator build(final char[] password)
                throws OperatorCreationException
            {
                if (!PKCSObjectIdentifiers.id_PBMAC1.equals(algorithmIdentifier.getAlgorithm()))
                {
                    throw new OperatorCreationException("protection algorithm not PB mac based");
                }

                BcPKCS12PBMac1CalculatorBuilder bldr;
                try
                {
                    bldr = new BcPKCS12PBMac1CalculatorBuilder(PBMAC1Params.getInstance(algorithmIdentifier.getParameters()));
                }
                catch (IOException e)
                {
                    throw new OperatorCreationException("invalid parameters in protection algorithm: " + e.getMessage());
                }
                return bldr.build(password);
            }

            public AlgorithmIdentifier getDigestAlgorithmIdentifier()
            {
                return new AlgorithmIdentifier(algorithmIdentifier.getAlgorithm(), algorithmIdentifier.getParameters());
            }
        };
    }
}