1 files changed, 75 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/ConstantTimeClock.c b/CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/ConstantTimeClock.c
new file mode 100644
index 0000000000..2ec13ef9d0
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+++ b/CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/ConstantTimeClock.c
@@ -0,0 +1,75 @@
+/** @file
+  C Run-Time Libraries (CRT) Time Management Routines Wrapper Implementation
+  for MbedTLS-based Cryptographic Library.
+
+  This C file implements constant time value for time() and NULL for gmtime()
+  thus should not be used in library instances which require functionality
+  of following APIs which need system time support:
+  1)  RsaGenerateKey
+  2)  RsaCheckKey
+  3)  RsaPkcs1Sign
+  4)  Pkcs7Sign
+  5)  DhGenerateParameter
+  6)  DhGenerateKey
+
+Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Library/BaseMemoryLib.h>
+
+typedef int time_t;
+
+//
+// Structures Definitions
+//
+struct tm {
+  int     tm_sec;    /* seconds after the minute [0-60] */
+  int     tm_min;    /* minutes after the hour [0-59] */
+  int     tm_hour;   /* hours since midnight [0-23] */
+  int     tm_mday;   /* day of the month [1-31] */
+  int     tm_mon;    /* months since January [0-11] */
+  int     tm_year;   /* years since 1900 */
+  int     tm_wday;   /* days since Sunday [0-6] */
+  int     tm_yday;   /* days since January 1 [0-365] */
+  int     tm_isdst;  /* Daylight Savings Time flag */
+  long    tm_gmtoff; /* offset from CUT in seconds */
+  char    *tm_zone;  /* timezone abbreviation */
+};
+
+//
+// -- Time Management Routines --
+//
+
+/**time function. **/
+time_t
+time (
+  time_t  *timer
+  )
+{
+  if (timer != NULL) {
+    *timer = 0;
+  }
+
+  return 0;
+}
+
+/**gmtime function. **/
+struct tm *
+gmtime (
+  const time_t  *timer
+  )
+{
+  return NULL;
+}
+
+/**_time64 function. **/
+time_t
+_time64 (
+  time_t  *t
+  )
+{
+  return time (t);
+}