1N/A * ***** BEGIN LICENSE BLOCK ***** 1N/A * Version: MPL 1.1/GPL 2.0/LGPL 2.1 1N/A * The contents of this file are subject to the Mozilla Public License Version 1N/A * 1.1 (the "License"); you may not use this file except in compliance with 1N/A * the License. You may obtain a copy of the License at 1N/A * Software distributed under the License is distributed on an "AS IS" basis, 1N/A * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 1N/A * for the specific language governing rights and limitations under the 1N/A * The Original Code is the elliptic curve math library. 1N/A * The Initial Developer of the Original Code is 1N/A * Sun Microsystems, Inc. 1N/A * Portions created by the Initial Developer are Copyright (C) 2003 1N/A * the Initial Developer. All Rights Reserved. 1N/A * Stephen Fung <fungstep@hotmail.com>, Sun Microsystems Laboratories 1N/A * Alternatively, the contents of this file may be used under the terms of 1N/A * either the GNU General Public License Version 2 or later (the "GPL"), or 1N/A * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 1N/A * in which case the provisions of the GPL or the LGPL are applicable instead 1N/A * of those above. If you wish to allow use of your version of this file only 1N/A * under the terms of either the GPL or the LGPL, and not to allow others to 1N/A * use your version of this file under the terms of the MPL, indicate your 1N/A * decision by deleting the provisions above and replace them with the notice 1N/A * and other provisions required by the GPL or the LGPL. If you do not delete 1N/A * the provisions above, a recipient may use your version of this file under 1N/A * the terms of any one of the MPL, the GPL or the LGPL. 1N/A * ***** END LICENSE BLOCK ***** */ 1N/A * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 1N/A * Use is subject to license terms. 1N/A * Sun elects to use this software under the MPL license. 1N/A#
pragma ident "%Z%%M% %I% %E% SMI" 1N/A/* Returns 2^e as an integer. This is meant to be used for small powers of 1N/A for (i = 0; i < e; i++) {
1N/A/* Computes the windowed non-adjacent-form (NAF) of a scalar. Out should 1N/A * be an array of signed char's to output to, bitsize should be the number 1N/A * of bits of out, in is the original scalar, and w is the window size. 1N/A * NAF is discussed in the paper: D. Hankerson, J. Hernandez and A. 1N/A * Menezes, "Software implementation of elliptic curve cryptography over 1N/A * binary fields", Proc. CHES 2000. */ 1N/A /* Compute wNAF form */ 1N/A /* Subtract off out[i]. Note mp_sub_d only works with 1N/A * unsigned digits */ 1N/A /* Zero out the remaining elements of the out array. */