| /* |
| * magic.h - PPP Magic Number definitions. |
| * |
| * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The name "Carnegie Mellon University" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For permission or any legal |
| * details, please contact |
| * Office of Technology Transfer |
| * Carnegie Mellon University |
| * 5000 Forbes Avenue |
| * Pittsburgh, PA 15213-3890 |
| * (412) 268-4387, fax: (412) 268-7395 |
| * tech-transfer@andrew.cmu.edu |
| * |
| * 4. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by Computing Services |
| * at Carnegie Mellon University (http://www.cmu.edu/computing/)." |
| * |
| * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
| * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE |
| * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
| * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
| * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| * |
| * $Id: magic.h,v 1.5 2003/06/11 23:56:26 paulus Exp $ |
| */ |
| /***************************************************************************** |
| * randm.h - Random number generator header file. |
| * |
| * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. |
| * Copyright (c) 1998 Global Election Systems Inc. |
| * |
| * The authors hereby grant permission to use, copy, modify, distribute, |
| * and license this software and its documentation for any purpose, provided |
| * that existing copyright notices are retained in all copies and that this |
| * notice and the following disclaimer are included verbatim in any |
| * distributions. No written agreement, license, or royalty fee is required |
| * for any of the authorized uses. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| ****************************************************************************** |
| * REVISION HISTORY |
| * |
| * 03-01-01 Marc Boucher <marc@mbsi.ca> |
| * Ported to lwIP. |
| * 98-05-29 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc. |
| * Extracted from avos. |
| *****************************************************************************/ |
| |
| #include "netif/ppp/ppp_opts.h" |
| #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
| |
| #ifndef MAGIC_H |
| #define MAGIC_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /*********************** |
| *** PUBLIC FUNCTIONS *** |
| ***********************/ |
| |
| /* |
| * Initialize the random number generator. |
| */ |
| void magic_init(void); |
| |
| /* |
| * Randomize our random seed value. To be called for truely random events |
| * such as user operations and network traffic. |
| */ |
| void magic_randomize(void); |
| |
| /* |
| * Return a new random number. |
| */ |
| u32_t magic(void); /* Returns the next magic number */ |
| |
| /* |
| * Fill buffer with random bytes |
| * |
| * Use the random pool to generate random data. This degrades to pseudo |
| * random when used faster than randomness is supplied using magic_churnrand(). |
| * Thus it's important to make sure that the results of this are not |
| * published directly because one could predict the next result to at |
| * least some degree. Also, it's important to get a good seed before |
| * the first use. |
| */ |
| void magic_random_bytes(unsigned char *buf, u32_t buf_len); |
| |
| /* |
| * Return a new random number between 0 and (2^pow)-1 included. |
| */ |
| u32_t magic_pow(u8_t pow); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* MAGIC_H */ |
| |
| #endif /* PPP_SUPPORT */ |
