Rahol Rajan / NetServices-Traffic

Used in Live Traffic Update Nokia LCD Display Project

Fork of NetServices by Segundo Equipo

lwip/netif/ppp/randm.h@8:92b57208ab99, 2013-03-06 (annotated)

Committer:
rrajan8
Date:
Wed Mar 06 19:07:23 2013 +0000
Revision:
8:92b57208ab99
Parent:
0:ac1725ba162c 
This project utilizes mbed's networking features to display live traffic updates on the Nokia LCD using the MapQuest API's Traffic Web Service.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
segundo 0:ac1725ba162c 1 /*****************************************************************************
segundo 0:ac1725ba162c 2 * randm.h - Random number generator header file.
segundo 0:ac1725ba162c 3 *
segundo 0:ac1725ba162c 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
segundo 0:ac1725ba162c 5 * Copyright (c) 1998 Global Election Systems Inc.
segundo 0:ac1725ba162c 6 *
segundo 0:ac1725ba162c 7 * The authors hereby grant permission to use, copy, modify, distribute,
segundo 0:ac1725ba162c 8 * and license this software and its documentation for any purpose, provided
segundo 0:ac1725ba162c 9 * that existing copyright notices are retained in all copies and that this
segundo 0:ac1725ba162c 10 * notice and the following disclaimer are included verbatim in any
segundo 0:ac1725ba162c 11 * distributions. No written agreement, license, or royalty fee is required
segundo 0:ac1725ba162c 12 * for any of the authorized uses.
segundo 0:ac1725ba162c 13 *
segundo 0:ac1725ba162c 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
segundo 0:ac1725ba162c 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
segundo 0:ac1725ba162c 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
segundo 0:ac1725ba162c 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
segundo 0:ac1725ba162c 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
segundo 0:ac1725ba162c 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
segundo 0:ac1725ba162c 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
segundo 0:ac1725ba162c 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
segundo 0:ac1725ba162c 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
segundo 0:ac1725ba162c 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
segundo 0:ac1725ba162c 24 *
segundo 0:ac1725ba162c 25 ******************************************************************************
segundo 0:ac1725ba162c 26 * REVISION HISTORY
segundo 0:ac1725ba162c 27 *
segundo 0:ac1725ba162c 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
segundo 0:ac1725ba162c 29 * Ported to lwIP.
segundo 0:ac1725ba162c 30 * 98-05-29 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
segundo 0:ac1725ba162c 31 * Extracted from avos.
segundo 0:ac1725ba162c 32 *****************************************************************************/
segundo 0:ac1725ba162c 33
segundo 0:ac1725ba162c 34 #ifndef RANDM_H
segundo 0:ac1725ba162c 35 #define RANDM_H
segundo 0:ac1725ba162c 36
segundo 0:ac1725ba162c 37 /***********************
segundo 0:ac1725ba162c 38 *** PUBLIC FUNCTIONS ***
segundo 0:ac1725ba162c 39 ***********************/
segundo 0:ac1725ba162c 40 /*
segundo 0:ac1725ba162c 41 * Initialize the random number generator.
segundo 0:ac1725ba162c 42 */
segundo 0:ac1725ba162c 43 void avRandomInit(void);
segundo 0:ac1725ba162c 44
segundo 0:ac1725ba162c 45 /*
segundo 0:ac1725ba162c 46 * Churn the randomness pool on a random event. Call this early and often
segundo 0:ac1725ba162c 47 * on random and semi-random system events to build randomness in time for
segundo 0:ac1725ba162c 48 * usage. For randomly timed events, pass a null pointer and a zero length
segundo 0:ac1725ba162c 49 * and this will use the system timer and other sources to add randomness.
segundo 0:ac1725ba162c 50 * If new random data is available, pass a pointer to that and it will be
segundo 0:ac1725ba162c 51 * included.
segundo 0:ac1725ba162c 52 */
segundo 0:ac1725ba162c 53 void avChurnRand(char *randData, u32_t randLen);
segundo 0:ac1725ba162c 54
segundo 0:ac1725ba162c 55 /*
segundo 0:ac1725ba162c 56 * Randomize our random seed value. To be called for truely random events
segundo 0:ac1725ba162c 57 * such as user operations and network traffic.
segundo 0:ac1725ba162c 58 */
segundo 0:ac1725ba162c 59 #if MD5_SUPPORT
segundo 0:ac1725ba162c 60 #define avRandomize() avChurnRand(NULL, 0)
segundo 0:ac1725ba162c 61 #else /* MD5_SUPPORT */
segundo 0:ac1725ba162c 62 void avRandomize(void);
segundo 0:ac1725ba162c 63 #endif /* MD5_SUPPORT */
segundo 0:ac1725ba162c 64
segundo 0:ac1725ba162c 65 /*
segundo 0:ac1725ba162c 66 * Use the random pool to generate random data. This degrades to pseudo
segundo 0:ac1725ba162c 67 * random when used faster than randomness is supplied using churnRand().
segundo 0:ac1725ba162c 68 * Thus it's important to make sure that the results of this are not
segundo 0:ac1725ba162c 69 * published directly because one could predict the next result to at
segundo 0:ac1725ba162c 70 * least some degree. Also, it's important to get a good seed before
segundo 0:ac1725ba162c 71 * the first use.
segundo 0:ac1725ba162c 72 */
segundo 0:ac1725ba162c 73 void avGenRand(char *buf, u32_t bufLen);
segundo 0:ac1725ba162c 74
segundo 0:ac1725ba162c 75 /*
segundo 0:ac1725ba162c 76 * Return a new random number.
segundo 0:ac1725ba162c 77 */
segundo 0:ac1725ba162c 78 u32_t avRandom(void);
segundo 0:ac1725ba162c 79
segundo 0:ac1725ba162c 80
segundo 0:ac1725ba162c 81 #endif /* RANDM_H */