CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c

   1 /** @file
   2   C Run-Time Libraries (CRT) Time Management Routines Wrapper Implementation
   3   for OpenSSL-based Cryptographic Library.
   4
   5   This C file implements constant time value for time() and NULL for gmtime()
   6   thus should not be used in library instances which require functionality
   7   of following APIs which need system time support:
   8   1)  RsaGenerateKey
   9   2)  RsaCheckKey
  10   3)  RsaPkcs1Sign
  11   4)  Pkcs7Sign
  12   5)  DhGenerateParameter
  13   6)  DhGenerateKey
  14
  15 Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
  16 SPDX-License-Identifier: BSD-2-Clause-Patent
  17
  18 **/
  19
  20 #include <CrtLibSupport.h>
  21
  22 //
  23 // -- Time Management Routines --
  24 //
  25
  26 time_t
  27 time (
  28   time_t  *timer
  29   )
  30 {
  31   if (timer != NULL) {
  32     *timer = 0;
  33   }
  34
  35   return 0;
  36 }
  37
  38 struct tm *
  39 gmtime (
  40   const time_t  *timer
  41   )
  42 {
  43   return NULL;
  44 }