Mac.java

package javax.crypto;

import javax.crypto.spec.SecretKeySpec;

public class Mac {

	public static Mac getInstance(String algo)
	{
		return null;
	}
	
	public void init(SecretKeySpec spec)
	{
		
	}
	
	public int getMacLength()
	{
		return -1;
	}
	
	public void update(byte[] b)
	{
		
	}
	
	public void doFinal(byte[] a, int i)
	{
		
	}
}