Lorcan Smith / Mbed 2 deprecated Enet_SPI

SNMP agent attached to SPI slave

Dependencies:   mbed

lwip/netif/ppp/randm.h@0:2a53a4c3238c, 2012-08-13 (annotated)

Committer:
lorcansmith
Date:
Mon Aug 13 15:07:40 2012 +0000
Revision:
0:2a53a4c3238c
v1.1 release includes ioAlarm traps

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lorcansmith 0:2a53a4c3238c 1 /*****************************************************************************
lorcansmith 0:2a53a4c3238c 2 * randm.h - Random number generator header file.
lorcansmith 0:2a53a4c3238c 3 *
lorcansmith 0:2a53a4c3238c 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
lorcansmith 0:2a53a4c3238c 5 * Copyright (c) 1998 Global Election Systems Inc.
lorcansmith 0:2a53a4c3238c 6 *
lorcansmith 0:2a53a4c3238c 7 * The authors hereby grant permission to use, copy, modify, distribute,
lorcansmith 0:2a53a4c3238c 8 * and license this software and its documentation for any purpose, provided
lorcansmith 0:2a53a4c3238c 9 * that existing copyright notices are retained in all copies and that this
lorcansmith 0:2a53a4c3238c 10 * notice and the following disclaimer are included verbatim in any
lorcansmith 0:2a53a4c3238c 11 * distributions. No written agreement, license, or royalty fee is required
lorcansmith 0:2a53a4c3238c 12 * for any of the authorized uses.
lorcansmith 0:2a53a4c3238c 13 *
lorcansmith 0:2a53a4c3238c 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
lorcansmith 0:2a53a4c3238c 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
lorcansmith 0:2a53a4c3238c 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
lorcansmith 0:2a53a4c3238c 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
lorcansmith 0:2a53a4c3238c 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
lorcansmith 0:2a53a4c3238c 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
lorcansmith 0:2a53a4c3238c 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
lorcansmith 0:2a53a4c3238c 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
lorcansmith 0:2a53a4c3238c 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
lorcansmith 0:2a53a4c3238c 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
lorcansmith 0:2a53a4c3238c 24 *
lorcansmith 0:2a53a4c3238c 25 ******************************************************************************
lorcansmith 0:2a53a4c3238c 26 * REVISION HISTORY
lorcansmith 0:2a53a4c3238c 27 *
lorcansmith 0:2a53a4c3238c 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
lorcansmith 0:2a53a4c3238c 29 * Ported to lwIP.
lorcansmith 0:2a53a4c3238c 30 * 98-05-29 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
lorcansmith 0:2a53a4c3238c 31 * Extracted from avos.
lorcansmith 0:2a53a4c3238c 32 *****************************************************************************/
lorcansmith 0:2a53a4c3238c 33
lorcansmith 0:2a53a4c3238c 34 #ifndef RANDM_H
lorcansmith 0:2a53a4c3238c 35 #define RANDM_H
lorcansmith 0:2a53a4c3238c 36
lorcansmith 0:2a53a4c3238c 37 /***********************
lorcansmith 0:2a53a4c3238c 38 *** PUBLIC FUNCTIONS ***
lorcansmith 0:2a53a4c3238c 39 ***********************/
lorcansmith 0:2a53a4c3238c 40 /*
lorcansmith 0:2a53a4c3238c 41 * Initialize the random number generator.
lorcansmith 0:2a53a4c3238c 42 */
lorcansmith 0:2a53a4c3238c 43 void avRandomInit(void);
lorcansmith 0:2a53a4c3238c 44
lorcansmith 0:2a53a4c3238c 45 /*
lorcansmith 0:2a53a4c3238c 46 * Churn the randomness pool on a random event. Call this early and often
lorcansmith 0:2a53a4c3238c 47 * on random and semi-random system events to build randomness in time for
lorcansmith 0:2a53a4c3238c 48 * usage. For randomly timed events, pass a null pointer and a zero length
lorcansmith 0:2a53a4c3238c 49 * and this will use the system timer and other sources to add randomness.
lorcansmith 0:2a53a4c3238c 50 * If new random data is available, pass a pointer to that and it will be
lorcansmith 0:2a53a4c3238c 51 * included.
lorcansmith 0:2a53a4c3238c 52 */
lorcansmith 0:2a53a4c3238c 53 void avChurnRand(char *randData, u32_t randLen);
lorcansmith 0:2a53a4c3238c 54
lorcansmith 0:2a53a4c3238c 55 /*
lorcansmith 0:2a53a4c3238c 56 * Randomize our random seed value. To be called for truely random events
lorcansmith 0:2a53a4c3238c 57 * such as user operations and network traffic.
lorcansmith 0:2a53a4c3238c 58 */
lorcansmith 0:2a53a4c3238c 59 #if MD5_SUPPORT
lorcansmith 0:2a53a4c3238c 60 #define avRandomize() avChurnRand(NULL, 0)
lorcansmith 0:2a53a4c3238c 61 #else /* MD5_SUPPORT */
lorcansmith 0:2a53a4c3238c 62 void avRandomize(void);
lorcansmith 0:2a53a4c3238c 63 #endif /* MD5_SUPPORT */
lorcansmith 0:2a53a4c3238c 64
lorcansmith 0:2a53a4c3238c 65 /*
lorcansmith 0:2a53a4c3238c 66 * Use the random pool to generate random data. This degrades to pseudo
lorcansmith 0:2a53a4c3238c 67 * random when used faster than randomness is supplied using churnRand().
lorcansmith 0:2a53a4c3238c 68 * Thus it's important to make sure that the results of this are not
lorcansmith 0:2a53a4c3238c 69 * published directly because one could predict the next result to at
lorcansmith 0:2a53a4c3238c 70 * least some degree. Also, it's important to get a good seed before
lorcansmith 0:2a53a4c3238c 71 * the first use.
lorcansmith 0:2a53a4c3238c 72 */
lorcansmith 0:2a53a4c3238c 73 void avGenRand(char *buf, u32_t bufLen);
lorcansmith 0:2a53a4c3238c 74
lorcansmith 0:2a53a4c3238c 75 /*
lorcansmith 0:2a53a4c3238c 76 * Return a new random number.
lorcansmith 0:2a53a4c3238c 77 */
lorcansmith 0:2a53a4c3238c 78 u32_t avRandom(void);
lorcansmith 0:2a53a4c3238c 79
lorcansmith 0:2a53a4c3238c 80
lorcansmith 0:2a53a4c3238c 81 #endif /* RANDM_H */