1 files changed, 37 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c b/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c
new file mode 100644
index 00000000..bf6b4136
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c
@@ -0,0 +1,37 @@
+/** @file
+  C Run-Time Libraries (CRT) Time Management Routines Wrapper Implementation
+  for OpenSSL-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) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <CrtLibSupport.h>
+
+//
+// -- Time Management Routines --
+//
+
+time_t time (time_t *timer)
+{
+  if (timer != NULL) {
+    *timer = 0;
+  }
+  return 0;
+}
+
+struct tm * gmtime (const time_t *timer)
+{
+  return NULL;
+}