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package org.bouncycastle.jcajce.io;
import java.io.OutputStream;
import java.security.MessageDigest;
import java.security.Signature;
import javax.crypto.Mac;
/**
* Utility class for creating OutputStreams from different JCA/JCE operators.
*/
public class OutputStreamFactory
{
/**
* Create an OutputStream that wraps a signature.
*
* @param signature the signature to be updated as the stream is written to.
* @return an OutputStream.
*/
public static OutputStream createStream(Signature signature)
{
return new SignatureUpdatingOutputStream(signature);
}
/**
* Create an OutputStream that wraps a digest.
*
* @param digest the digest to be updated as the stream is written to.
* @return an OutputStream.
*/
public static OutputStream createStream(MessageDigest digest)
{
return new DigestUpdatingOutputStream(digest);
}
/**
* Create an OutputStream that wraps a mac.
*
* @param mac the signature to be updated as the stream is written to.
* @return an OutputStream.
*/
public static OutputStream createStream(Mac mac)
{
return new MacUpdatingOutputStream(mac);
}
}
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