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    1   /*
    2    * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   package java.security.spec;
   26   
   27   import java.math.BigInteger;
   28   import java.util.Arrays;
   29   
   30   /**
   31    * This interface represents an elliptic curve (EC) finite field.
   32    * All specialized EC fields must implements this interface.
   33    *
   34    * @see ECFieldFp
   35    * @see ECFieldF2m
   36    *
   37    * @author Valerie Peng
   38    *
   39    * @since 1.5
   40    */
   41   public interface ECField {
   42       /**
   43        * Returns the field size in bits. Note: For prime finite
   44        * field ECFieldFp, size of prime p in bits is returned.
   45        * For characteristic 2 finite field ECFieldF2m, m is returned.
   46        * @return the field size in bits.
   47        */
   48       int getFieldSize();
   49   }

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