[457] | 1 | /*
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| 2 | * magic.h - PPP Magic Number definitions.
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| 3 | *
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| 4 | * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in
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| 15 | * the documentation and/or other materials provided with the
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| 16 | * distribution.
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| 17 | *
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| 18 | * 3. The name "Carnegie Mellon University" must not be used to
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| 19 | * endorse or promote products derived from this software without
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| 20 | * prior written permission. For permission or any legal
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| 21 | * details, please contact
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| 22 | * Office of Technology Transfer
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| 23 | * Carnegie Mellon University
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| 24 | * 5000 Forbes Avenue
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| 25 | * Pittsburgh, PA 15213-3890
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| 26 | * (412) 268-4387, fax: (412) 268-7395
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| 27 | * tech-transfer@andrew.cmu.edu
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| 28 | *
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| 29 | * 4. Redistributions of any form whatsoever must retain the following
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| 30 | * acknowledgment:
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| 31 | * "This product includes software developed by Computing Services
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| 32 | * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
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| 33 | *
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| 34 | * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
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| 35 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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| 36 | * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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| 37 | * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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| 38 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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| 39 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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| 40 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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| 41 | *
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| 42 | * $Id$
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| 43 | */
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| 44 | /*****************************************************************************
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| 45 | * randm.h - Random number generator header file.
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| 46 | *
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| 47 | * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
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| 48 | * Copyright (c) 1998 Global Election Systems Inc.
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| 49 | *
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| 50 | * The authors hereby grant permission to use, copy, modify, distribute,
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| 51 | * and license this software and its documentation for any purpose, provided
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| 52 | * that existing copyright notices are retained in all copies and that this
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| 53 | * notice and the following disclaimer are included verbatim in any
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| 54 | * distributions. No written agreement, license, or royalty fee is required
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| 55 | * for any of the authorized uses.
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| 56 | *
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| 57 | * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
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| 58 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 59 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 60 | * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 61 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 62 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 63 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 64 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 65 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 66 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 67 | *
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| 68 | ******************************************************************************
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| 69 | * REVISION HISTORY
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| 70 | *
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| 71 | * 03-01-01 Marc Boucher <marc@mbsi.ca>
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| 72 | * Ported to lwIP.
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| 73 | * 98-05-29 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
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| 74 | * Extracted from avos.
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| 75 | *****************************************************************************/
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| 76 |
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| 77 | #include "netif/ppp/ppp_opts.h"
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| 78 | #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
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| 79 |
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| 80 | #ifndef MAGIC_H
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| 81 | #define MAGIC_H
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| 82 |
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| 83 | #ifdef __cplusplus
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| 84 | extern "C" {
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| 85 | #endif
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| 86 |
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| 87 | /***********************
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| 88 | *** PUBLIC FUNCTIONS ***
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| 89 | ***********************/
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| 90 |
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| 91 | /*
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| 92 | * Initialize the random number generator.
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| 93 | */
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| 94 | void magic_init(void);
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| 95 |
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| 96 | /*
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| 97 | * Randomize our random seed value. To be called for truely random events
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| 98 | * such as user operations and network traffic.
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| 99 | */
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| 100 | void magic_randomize(void);
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| 101 |
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| 102 | /*
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| 103 | * Return a new random number.
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| 104 | */
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| 105 | u32_t magic(void); /* Returns the next magic number */
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| 106 |
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| 107 | /*
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| 108 | * Fill buffer with random bytes
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| 109 | *
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| 110 | * Use the random pool to generate random data. This degrades to pseudo
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| 111 | * random when used faster than randomness is supplied using magic_churnrand().
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| 112 | * Thus it's important to make sure that the results of this are not
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| 113 | * published directly because one could predict the next result to at
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| 114 | * least some degree. Also, it's important to get a good seed before
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| 115 | * the first use.
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| 116 | */
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| 117 | void magic_random_bytes(unsigned char *buf, u32_t buf_len);
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| 118 |
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| 119 | /*
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| 120 | * Return a new random number between 0 and (2^pow)-1 included.
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| 121 | */
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| 122 | u32_t magic_pow(u8_t pow);
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| 123 |
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| 124 | #ifdef __cplusplus
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| 125 | }
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| 126 | #endif
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| 127 |
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| 128 | #endif /* MAGIC_H */
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| 129 |
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| 130 | #endif /* PPP_SUPPORT */
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