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package org.spongycastle.crypto.io;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.spongycastle.crypto.Mac;
public class MacInputStream
extends FilterInputStream
{
protected Mac mac;
public MacInputStream(
InputStream stream,
Mac mac)
{
super(stream);
this.mac = mac;
}
public int read()
throws IOException
{
int b = in.read();
if (b >= 0)
{
mac.update((byte)b);
}
return b;
}
public int read(
byte[] b,
int off,
int len)
throws IOException
{
int n = in.read(b, off, len);
if (n >= 0)
{
mac.update(b, off, n);
}
return n;
}
public Mac getMac()
{
return mac;
}
}
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