1 /*

     2 Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

     3 

     4 Redistribution and use in source and binary forms, with or without 

     5 modification, are permitted provided that the following conditions are met:

     6 

     7 * Redistributions of source code must retain the above copyright notice, this 

     8   list of conditions and the following disclaimer.

     9 * Redistributions in binary form must reproduce the above copyright notice, 

    10   this list of conditions and the following disclaimer in the documentation 

    11   and/or other materials provided with the distribution.

    12 * Neither the name of Nokia Corporation nor the names of its contributors 

    13   may be used to endorse or promote products derived from this software 

    14   without specific prior written permission.

    15 

    16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 

    17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 

    18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 

    19 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 

    20 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 

    21 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 

    22 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 

    23 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 

    24 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 

    25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    26 

    27 Description:

    28 */

    29 

    30 #include <stdio.h>

    31 

    32 #define USE_SOCKETS

    33 #include "e_os.h"

    34 #include "cryptlib.h"

    35 #include <openssl/rand.h>

    36 #include "rand_lcl.h"

    37 

    38 #include <sys/types.h>

    39 #include <sys/time.h>

    40 #include <sys/stat.h>

    41 #include <fcntl.h>

    42 #include <unistd.h>

    43 #include <time.h>

    44 

    45 

    46 EXPORT_C int RAND_poll(void)

    47 {

    48 	u_int32_t rnd = 0, i;

    49 	unsigned char buf[ENTROPY_NEEDED];

    50 

    51 	for (i = 0; i < sizeof(buf); i++) {

    52 		if (i % 4 == 0)

    53 			rnd = rand();

    54 		buf[i] = rnd;

    55 		rnd >>= 8;

    56 	}

    57 	RAND_add(buf, sizeof(buf), ENTROPY_NEEDED);

    58 	memset(buf, 0, sizeof(buf));

    59 

    60 	return 1;

    61 }