 * MODP_B64 - High performance base64 encoder/decoder&#xA; * Version 1.3 -- 17-Mar-2006&#xA; * http://modp.com/release/base64&#xA; *&#xA; * Copyright (c) 2005, 2006  Nick Galbreath -- nickg [at] modp [dot] com&#xA; * All rights reserved.&#xA; *&#xA; * Redistribution and use in source and binary forms, with or without&#xA; * modification, are permitted provided that the following conditions are&#xA; * met:&#xA; *&#xA; *   Redistributions of source code must retain the above copyright&#xA; *   notice, this list of conditions and the following disclaimer.&#xA; *&#xA; *   Redistributions in binary form must reproduce the above copyright&#xA; *   notice, this list of conditions and the following disclaimer in the&#xA; *   documentation and/or other materials provided with the distribution.&#xA; *&#xA; *   Neither the name of the modp.com nor the names of its&#xA; *   contributors may be used to endorse or promote products derived from&#xA; *   this software without specific prior written permission.&#xA; *&#xA; * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS&#xA; * &#34;AS IS&#34; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT&#xA; * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR&#xA; * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT&#xA; * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,&#xA; * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT&#xA; * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,&#xA; * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY&#xA; * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT&#xA; * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE&#xA; * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&#xA;