package/px5g/src/polarssl/havege.h

   1 /**
   2  * \file havege.h
   3  *
   4  *  Based on XySSL: Copyright (C) 2006-2008  Christophe Devine
   5  *
   6  *  Copyright (C) 2009  Paul Bakker <polarssl_maintainer at polarssl dot org>
   7  *
   8  *  All rights reserved.
   9  *
  10  *  Redistribution and use in source and binary forms, with or without
  11  *  modification, are permitted provided that the following conditions
  12  *  are met:
  13  *
  14  *    * Redistributions of source code must retain the above copyright
  15  *      notice, this list of conditions and the following disclaimer.
  16  *    * Redistributions in binary form must reproduce the above copyright
  17  *      notice, this list of conditions and the following disclaimer in the
  18  *      documentation and/or other materials provided with the distribution.
  19  *    * Neither the names of PolarSSL or XySSL nor the names of its contributors
  20  *      may be used to endorse or promote products derived from this software
  21  *      without specific prior written permission.
  22  *
  23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  26  *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  29  *  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  30  *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  31  *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  32  *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  33  *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35 #ifndef POLARSSL_HAVEGE_H
  36 #define POLARSSL_HAVEGE_H
  37
  38 #define COLLECT_SIZE 1024
  39
  40 /**
  41  * \brief          HAVEGE state structure
  42  */
  43 typedef struct
  44 {
  45     int PT1, PT2, offset[2];
  46     int pool[COLLECT_SIZE];
  47     int WALK[8192];
  48 }
  49 havege_state;
  50
  51 #ifdef __cplusplus
  52 extern "C" {
  53 #endif
  54
  55 /**
  56  * \brief          HAVEGE initialization
  57  *
  58  * \param hs       HAVEGE state to be initialized
  59  */
  60 void havege_init( havege_state *hs );
  61
  62 /**
  63  * \brief          HAVEGE rand function
  64  *
  65  * \param rng_st   points to an HAVEGE state
  66  *
  67  * \return         A random int
  68  */
  69 int havege_rand( void *p_rng );
  70
  71 #ifdef __cplusplus
  72 }
  73 #endif
  74
  75 #endif /* havege.h */