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The Bouncy Castle Java APIs for the OpenPGP Protocol. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

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package org.bouncycastle.bcpg.sig;

import org.bouncycastle.bcpg.SignatureSubpacket;
import org.bouncycastle.bcpg.SignatureSubpacketTags;

/**
 * packet giving signature creation time.
 */
public class Exportable 
    extends SignatureSubpacket
{    
    private static byte[] booleanToByteArray(
        boolean    value)
    {
        byte[]    data = new byte[1];
        
        if (value)
        {
            data[0] = 1;
            return data;
        }
        else
        {
            return data;
        }
    }
    
    public Exportable(
        boolean    critical,
        boolean    isLongLength,
        byte[]     data)
    {
        super(SignatureSubpacketTags.EXPORTABLE, critical, isLongLength, data);
    }
    
    public Exportable(
        boolean    critical,
        boolean    isExportable)
    {
        super(SignatureSubpacketTags.EXPORTABLE, critical, false,  booleanToByteArray(isExportable));
    }
    
    public boolean isExportable()
    {
        return data[0] != 0;
    }
}