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diff --git a/libjava/java/security/AlgorithmParametersSpi.java b/libjava/java/security/AlgorithmParametersSpi.java
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+/* AlgorithmParametersSpi.java --- Algorithm Parameters SPI
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+package java.security;
+import java.security.spec.InvalidParameterSpecException;
+import java.security.spec.AlgorithmParameterSpec;
+import java.io.IOException;
+
+/**
+   AlgorithmParametersSpi is the Service Provider Interface
+   for the Algorithm Parameters class. This class is used
+   to manage the algorithm parameters.
+
+   @since JDK 1.2
+   @author Mark Benvenuto
+ */
+public abstract class AlgorithmParametersSpi
+{
+  /**
+     Creates a new instance of AlgorithmParametersSpi
+   */
+  public AlgorithmParametersSpi()
+  {
+  }
+
+  /**
+     Initializes the engine with the specified 
+     AlgorithmParameterSpec class.
+
+     @param paramSpec A AlgorithmParameterSpec to initialize with
+
+     @throws InvalidParameterSpecException For an inapporiate ParameterSpec class
+   */
+  protected abstract void engineInit(AlgorithmParameterSpec paramSpec) throws
+    InvalidParameterSpecException;
+
+  /**
+     Initializes the engine with the specified 
+     parameters stored in the byte array and decodes them
+     according to the ASN.1 specification. If the ASN.1
+     specification exists then it succeeds or else it throws
+     IOException.
+
+     @param params Parameters to initialize with
+
+     @throws IOException Decoding Error
+   */
+  protected abstract void engineInit(byte[]params) throws IOException;
+
+  /**
+     Initializes the engine with the specified 
+     parameters stored in the byte array and decodes them
+     according to the specified decoding specification. 
+     If format is null, then it is decoded using the ASN.1 
+     specification if it exists or else it throws
+     IOException.
+
+     @param params Parameters to initialize with
+     @param format Name of decoding format to use
+
+     @throws IOException Decoding Error
+   */
+  protected abstract void engineInit(byte[]params,
+				     String format) throws IOException;
+
+
+  /**
+     Returns a specification of this AlgorithmParameters object.
+     paramSpec identifies the class to return the AlgortihmParameters
+     in. 
+
+     @param paramSpec Class to return AlgorithmParameters in
+
+     @return the parameter specification
+
+     @throws InvalidParameterSpecException if the paramSpec is an invalid parameter class
+   */
+  protected abstract AlgorithmParameterSpec engineGetParameterSpec(Class
+								   paramSpec)
+    throws InvalidParameterSpecException;
+
+
+  /**
+     Returns the parameters in the default encoding format. 
+     The primary encoding format is ASN.1 format if it exists
+     for the specified type.
+
+     @return byte array representing the parameters
+   */
+  protected abstract byte[] engineGetEncoded() throws IOException;
+
+
+  /**
+     Returns the parameters in the specified encoding format. 
+     If <code>format</code> is <code>null</code> then the 
+     primary encoding format is used, the ASN.1 format, 
+     if it exists for the specified type.
+
+     @return byte array representing the parameters
+   */
+  protected abstract byte[] engineGetEncoded(String format) throws
+    IOException;
+
+  /**
+     Returns a string describing the parameters in the 
+     AlgorithmParametersSpi class.
+
+     @return A string representing the format of the parameters.
+   */
+  protected abstract String engineToString();
+}