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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 and up.

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package org.bouncycastle.jcajce;

import java.io.OutputStream;
import java.security.KeyStore;
import java.security.KeyStore.LoadStoreParameter;
import java.security.KeyStore.ProtectionParameter;

/**
 * LoadStoreParameter to allow for additional config with PKCS12 files.
 * 
 * Note: if you want a straight DER encoding of a PKCS#12 file you should use this.
 * 
 */
public class PKCS12StoreParameter
    implements LoadStoreParameter
{
    private final OutputStream out;
    private final ProtectionParameter protectionParameter;
    private final boolean forDEREncoding;

    public PKCS12StoreParameter(OutputStream out, char[] password)
    {
        this(out, password, false);
    }

    public PKCS12StoreParameter(OutputStream out, ProtectionParameter protectionParameter)
    {
        this(out, protectionParameter, false);
    }

    public PKCS12StoreParameter(OutputStream out, char[] password, boolean forDEREncoding)
    {
        this(out, new KeyStore.PasswordProtection(password), forDEREncoding);
    }

    public PKCS12StoreParameter(OutputStream out, ProtectionParameter protectionParameter, boolean forDEREncoding)
    {
        this.out = out;
        this.protectionParameter = protectionParameter;
        this.forDEREncoding = forDEREncoding;
    }

    public OutputStream getOutputStream()
    {
        return out;
    }

    public ProtectionParameter getProtectionParameter()
    {
        return protectionParameter;
    }

    /**
     * Return whether the KeyStore used with this parameter should be DER encoded on saving.
     *
     * @return true for straight DER encoding, false otherwise,
     */
    public boolean isForDEREncoding()
    {
        return forDEREncoding;
    }
}