package org.bouncycastle.crypto.io; import java.io.IOException; import java.io.OutputStream; import org.bouncycastle.crypto.Mac; public class MacOutputStream extends OutputStream { protected Mac mac; public MacOutputStream( Mac mac) { this.mac = mac; } public void write(int b) throws IOException { mac.update((byte)b); } public void write( byte[] b, int off, int len) throws IOException { mac.update(b, off, len); } public byte[] getMac() { byte[] res = new byte[mac.getMacSize()]; mac.doFinal(res, 0); return res; } }