OSX/libsecurity_cryptkit/lib/feeRandom.c

   1 /* Copyright (c) 1998,2011,2014 Apple Inc.  All Rights Reserved.
   2  *
   3  * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
   4  * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
   5  * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
   6  * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
   7  * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
   8  * EXPOSE YOU TO LIABILITY.
   9  ***************************************************************************
  10  *
  11  * FeeRandom.c - generic, portable random number generator object
  12  *
  13  * Revision History
  14  * ----------------
  15  * 10/06/98             ap
  16  *      Changed to compile with C++.
  17  * 19 Jun 97 at Apple
  18  *      Eliminated predictability of bytes 4 thru 15 of random data
  19  * 18 Jun 97 at Apple
  20  *      Reduced size of per-instance giants from 128 to 32 shorts
  21  * 23 Aug 96 at NeXT
  22  *      Created, based on Blaine Garst's NSRandomNumberGenerator class
  23  */
  24
  25 #include "feeRandom.h"
  26 #include "platform.h"
  27 #include <Security/SecRandom.h>
  28
  29 feeRand feeRandAllocWithSeed(__attribute__((unused)) unsigned seed)
  30 {
  31     return NULL;
  32 }
  33
  34 feeRand feeRandAlloc(void)
  35 {
  36         return NULL;
  37 }
  38
  39 void feeRandFree(__attribute__((unused)) feeRand frand)
  40 {
  41
  42 }
  43
  44 unsigned feeRandNextNum(feeRand frand)
  45 {
  46     unsigned rand;
  47
  48     feeRandBytes(frand, &rand, sizeof(rand));
  49
  50         return rand;
  51 }
  52
  53 void feeRandBytes(__attribute__((unused)) feeRand frand, void *bytes, unsigned numBytes)
  54 {
  55     int err;
  56
  57     err = SecRandomCopyBytes(kSecRandomDefault, numBytes, bytes);
  58     if (err != errSecSuccess) {
  59         CKRaise("feeRandBytes");
  60     }
  61 }
  62
  63 /* new function, 5 March 1999 - dmitch */
  64 void feeRandAddEntropy(__attribute__((unused)) feeRand frand, __attribute__((unused)) unsigned entropy)
  65 {
  66
  67 }
  68