org.spongycastle.cms.RecipientOperator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of pkix Show documentation

Spongy Castle is a package-rename (org.bouncycastle.* to org.spongycastle.*) of Bouncy Castle intended for the Android platform. Android unfortunately ships with a stripped-down version of Bouncy Castle, which prevents easy upgrades - Spongy Castle overcomes this and provides a full, up-to-date version of the Bouncy Castle cryptographic libs.

There is a newer version: 1.54.0.0

Show newest version

package org.spongycastle.cms;

import java.io.InputStream;

import org.spongycastle.asn1.x509.AlgorithmIdentifier;
import org.spongycastle.operator.InputDecryptor;
import org.spongycastle.operator.MacCalculator;
import org.spongycastle.util.io.TeeInputStream;

public class RecipientOperator
{
    private final AlgorithmIdentifier algorithmIdentifier;
    private final Object operator;

    public RecipientOperator(InputDecryptor decryptor)
    {
        this.algorithmIdentifier = decryptor.getAlgorithmIdentifier();
        this.operator = decryptor;
    }

    public RecipientOperator(MacCalculator macCalculator)
    {
        this.algorithmIdentifier = macCalculator.getAlgorithmIdentifier();
        this.operator = macCalculator;
    }

    public InputStream getInputStream(InputStream dataIn)
    {
        if (operator instanceof InputDecryptor)
        {
            return ((InputDecryptor)operator).getInputStream(dataIn);
        }
        else
        {
            return new TeeInputStream(dataIn, ((MacCalculator)operator).getOutputStream());
        }
    }

    public boolean isMacBased()
    {
        return operator instanceof MacCalculator;
    }

    public byte[] getMac()
    {
        return ((MacCalculator)operator).getMac();
    }
}