org.bouncycastle.pkcs.bc.BcPKCS12PBMac1CalculatorBuilder 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.PBKDF2Params;
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 java.io.IOException;

public class BcPKCS12PBMac1CalculatorBuilder
    implements PKCS12MacCalculatorBuilder
{    
    private final PBMAC1Params pbmac1Params;
    private PBKDF2Params pbkdf2Params = null;

    public BcPKCS12PBMac1CalculatorBuilder(PBMAC1Params pbeMacParams) throws IOException
    {
        this.pbmac1Params = pbeMacParams;
        if (PKCSObjectIdentifiers.id_PBKDF2.equals(pbeMacParams.getKeyDerivationFunc().getAlgorithm()))
        {
            this.pbkdf2Params = PBKDF2Params.getInstance(pbeMacParams.getKeyDerivationFunc().getParameters());
            if (pbkdf2Params.getKeyLength() == null)
            {
                throw new IOException("Key length must be present when using PBMAC1.");
            }
        }
        // TODO handle other cases
    }

    @Override
    public AlgorithmIdentifier getDigestAlgorithmIdentifier()
    {
        return new AlgorithmIdentifier(PKCSObjectIdentifiers.id_PBMAC1, pbmac1Params);
    }

    public MacCalculator build(final char[] password) throws OperatorCreationException
    {
        return PKCS12PBEUtils.createPBMac1Calculator(pbmac1Params, pbkdf2Params, password);
    }
}