thinking in java4 src

				
				package ch.ethz.ssh2.crypto.digest;
				
				/**
				 * Digest.
				 * 
				 * @author Christian Plattner, plattner@inf.ethz.ch
				 * @version $Id: Digest.java,v 1.2 2005/08/11 12:47:29 cplattne Exp $
				 */
				public interface Digest
				{
					public int getDigestLength();
				
					public void update(byte b);
				
					public void update(byte[] b);
				
					public void update(byte b[], int off, int len);
				
					public void reset();
				
					public void digest(byte[] out);
				
					public void digest(byte[] out, int off);
				}