Simon Ford / NetServices

Version of http://mbed.org/cookbook/NetServicesTribute with setting set the same for LPC2368

Dependents:   UDPSocketExample 24LCxx_I2CApp WeatherPlatform_pachube HvZServerLib ... more

lwip/netif/ppp/randm.h@0:350011bf8be7, 2010-11-23 (annotated)

Committer:
simon
Date:
Tue Nov 23 14:15:36 2010 +0000
Revision:
0:350011bf8be7
Experimental version for testing UDP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon 0:350011bf8be7 1 /*****************************************************************************
simon 0:350011bf8be7 2 * randm.h - Random number generator header file.
simon 0:350011bf8be7 3 *
simon 0:350011bf8be7 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
simon 0:350011bf8be7 5 * Copyright (c) 1998 Global Election Systems Inc.
simon 0:350011bf8be7 6 *
simon 0:350011bf8be7 7 * The authors hereby grant permission to use, copy, modify, distribute,
simon 0:350011bf8be7 8 * and license this software and its documentation for any purpose, provided
simon 0:350011bf8be7 9 * that existing copyright notices are retained in all copies and that this
simon 0:350011bf8be7 10 * notice and the following disclaimer are included verbatim in any
simon 0:350011bf8be7 11 * distributions. No written agreement, license, or royalty fee is required
simon 0:350011bf8be7 12 * for any of the authorized uses.
simon 0:350011bf8be7 13 *
simon 0:350011bf8be7 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
simon 0:350011bf8be7 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
simon 0:350011bf8be7 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
simon 0:350011bf8be7 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
simon 0:350011bf8be7 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
simon 0:350011bf8be7 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
simon 0:350011bf8be7 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
simon 0:350011bf8be7 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
simon 0:350011bf8be7 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
simon 0:350011bf8be7 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
simon 0:350011bf8be7 24 *
simon 0:350011bf8be7 25 ******************************************************************************
simon 0:350011bf8be7 26 * REVISION HISTORY
simon 0:350011bf8be7 27 *
simon 0:350011bf8be7 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
simon 0:350011bf8be7 29 * Ported to lwIP.
simon 0:350011bf8be7 30 * 98-05-29 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
simon 0:350011bf8be7 31 * Extracted from avos.
simon 0:350011bf8be7 32 *****************************************************************************/
simon 0:350011bf8be7 33
simon 0:350011bf8be7 34 #ifndef RANDM_H
simon 0:350011bf8be7 35 #define RANDM_H
simon 0:350011bf8be7 36
simon 0:350011bf8be7 37 /***********************
simon 0:350011bf8be7 38 *** PUBLIC FUNCTIONS ***
simon 0:350011bf8be7 39 ***********************/
simon 0:350011bf8be7 40 /*
simon 0:350011bf8be7 41 * Initialize the random number generator.
simon 0:350011bf8be7 42 */
simon 0:350011bf8be7 43 void avRandomInit(void);
simon 0:350011bf8be7 44
simon 0:350011bf8be7 45 /*
simon 0:350011bf8be7 46 * Churn the randomness pool on a random event. Call this early and often
simon 0:350011bf8be7 47 * on random and semi-random system events to build randomness in time for
simon 0:350011bf8be7 48 * usage. For randomly timed events, pass a null pointer and a zero length
simon 0:350011bf8be7 49 * and this will use the system timer and other sources to add randomness.
simon 0:350011bf8be7 50 * If new random data is available, pass a pointer to that and it will be
simon 0:350011bf8be7 51 * included.
simon 0:350011bf8be7 52 */
simon 0:350011bf8be7 53 void avChurnRand(char *randData, u32_t randLen);
simon 0:350011bf8be7 54
simon 0:350011bf8be7 55 /*
simon 0:350011bf8be7 56 * Randomize our random seed value. To be called for truely random events
simon 0:350011bf8be7 57 * such as user operations and network traffic.
simon 0:350011bf8be7 58 */
simon 0:350011bf8be7 59 #if MD5_SUPPORT
simon 0:350011bf8be7 60 #define avRandomize() avChurnRand(NULL, 0)
simon 0:350011bf8be7 61 #else /* MD5_SUPPORT */
simon 0:350011bf8be7 62 void avRandomize(void);
simon 0:350011bf8be7 63 #endif /* MD5_SUPPORT */
simon 0:350011bf8be7 64
simon 0:350011bf8be7 65 /*
simon 0:350011bf8be7 66 * Use the random pool to generate random data. This degrades to pseudo
simon 0:350011bf8be7 67 * random when used faster than randomness is supplied using churnRand().
simon 0:350011bf8be7 68 * Thus it's important to make sure that the results of this are not
simon 0:350011bf8be7 69 * published directly because one could predict the next result to at
simon 0:350011bf8be7 70 * least some degree. Also, it's important to get a good seed before
simon 0:350011bf8be7 71 * the first use.
simon 0:350011bf8be7 72 */
simon 0:350011bf8be7 73 void avGenRand(char *buf, u32_t bufLen);
simon 0:350011bf8be7 74
simon 0:350011bf8be7 75 /*
simon 0:350011bf8be7 76 * Return a new random number.
simon 0:350011bf8be7 77 */
simon 0:350011bf8be7 78 u32_t avRandom(void);
simon 0:350011bf8be7 79
simon 0:350011bf8be7 80
simon 0:350011bf8be7 81 #endif /* RANDM_H */