[edk2-devel] [PATCH v6 1/9] MdeModulePkg: Duplicate BaseRngLibTimerLib to MdeModulePkg
PierreGondois
pierre.gondois at arm.com
Fri Aug 11 14:33:02 UTC 2023
From: Pierre Gondois <pierre.gondois at arm.com>
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4504
The BaseRngLibTimerLib allows to generate number based on a timer.
This mechanism allows to have a basic non-secure implementation
for non-production platforms.
To bind and identify Random Number Generators implementations with
a GUID, an unsafe GUID should be added. This GUID cannot be added
to the MdePkg unless it is also added to a specification.
To keep the MdePkg self-contained, copy the BaseRngLibTimerLib to
the MdeModulePkg. This will allow to define an unsafe Rng GUID
in a later patch in the MdeModulePkg.
The MdePkg implementation will be removed later. This allows to give
some time to platform owners to switch to the MdeModulePkg
implementation.
Signed-off-by: Pierre Gondois <pierre.gondois at arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar at arm.com>
Tested-by: Kun Qin <kun.qin at microsoft.com>
---
ArmVirtPkg/ArmVirt.dsc.inc | 2 +-
EmulatorPkg/EmulatorPkg.dsc | 2 +-
.../BaseRngLibTimerLib/BaseRngLibTimerLib.inf | 36 ++++
.../BaseRngLibTimerLib/BaseRngLibTimerLib.uni | 15 ++
.../Library/BaseRngLibTimerLib/RngLibTimer.c | 192 ++++++++++++++++++
MdeModulePkg/MdeModulePkg.dsc | 1 +
NetworkPkg/NetworkPkg.dsc | 4 +-
OvmfPkg/AmdSev/AmdSevX64.dsc | 2 +-
OvmfPkg/Bhyve/BhyveX64.dsc | 2 +-
OvmfPkg/CloudHv/CloudHvX64.dsc | 2 +-
OvmfPkg/IntelTdx/IntelTdxX64.dsc | 2 +-
OvmfPkg/Microvm/MicrovmX64.dsc | 2 +-
OvmfPkg/OvmfPkgIa32.dsc | 2 +-
OvmfPkg/OvmfPkgIa32X64.dsc | 2 +-
OvmfPkg/OvmfPkgX64.dsc | 2 +-
OvmfPkg/OvmfXen.dsc | 2 +-
OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc | 2 +-
SecurityPkg/SecurityPkg.dsc | 4 +-
SignedCapsulePkg/SignedCapsulePkg.dsc | 4 +-
19 files changed, 262 insertions(+), 18 deletions(-)
create mode 100644 MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
create mode 100644 MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.uni
create mode 100644 MdeModulePkg/Library/BaseRngLibTimerLib/RngLibTimer.c
diff --git a/ArmVirtPkg/ArmVirt.dsc.inc b/ArmVirtPkg/ArmVirt.dsc.inc
index 2443e8351c99..3f7bac6bf33a 100644
--- a/ArmVirtPkg/ArmVirt.dsc.inc
+++ b/ArmVirtPkg/ArmVirt.dsc.inc
@@ -154,7 +154,7 @@ [LibraryClasses.common]
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
BaseCryptLib|CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
#
# Secure Boot dependencies
diff --git a/EmulatorPkg/EmulatorPkg.dsc b/EmulatorPkg/EmulatorPkg.dsc
index b44435d7e6ee..b14654739b54 100644
--- a/EmulatorPkg/EmulatorPkg.dsc
+++ b/EmulatorPkg/EmulatorPkg.dsc
@@ -128,7 +128,7 @@ [LibraryClasses]
FileHandleLib|MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
IntrinsicLib|CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
PlatformSecureLib|SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.inf
diff --git a/MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf b/MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
new file mode 100644
index 000000000000..f857290e823b
--- /dev/null
+++ b/MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
@@ -0,0 +1,36 @@
+## @file
+# Instance of RNG (Random Number Generator) Library.
+#
+# BaseRng Library that uses the TimerLib to provide reasonably random numbers.
+# Do NOT use this on a production system as this uses the system performance
+# counter rather than a true source of random in addition to having a weak
+# random algorithm. This is provided primarily as a source of entropy for
+# OpenSSL for platforms that do not have a good built in RngLib as this
+# emulates what was done before (though it isn't perfect).
+#
+# Copyright (c) Microsoft Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#
+##
+
+[Defines]
+ INF_VERSION = 1.27
+ BASE_NAME = BaseRngLibTimerLib
+ MODULE_UNI_FILE = BaseRngLibTimerLib.uni
+ FILE_GUID = 74950C45-10FC-4AB5-B114-49C87C17409B
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = RngLib
+
+[Sources]
+ RngLibTimer.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ TimerLib
diff --git a/MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.uni b/MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.uni
new file mode 100644
index 000000000000..fde24b9f0107
--- /dev/null
+++ b/MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.uni
@@ -0,0 +1,15 @@
+// @file
+// Instance of RNG (Random Number Generator) Library.
+//
+// RngLib that uses TimerLib's performance counter to provide random numbers.
+//
+// Copyright (c) Microsoft Corporation.
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+
+
+#string STR_MODULE_ABSTRACT #language en-US "Instance of RNG Library"
+
+#string STR_MODULE_DESCRIPTION #language en-US "BaseRng Library that uses the TimerLib to provide low-entropy random numbers"
+
diff --git a/MdeModulePkg/Library/BaseRngLibTimerLib/RngLibTimer.c b/MdeModulePkg/Library/BaseRngLibTimerLib/RngLibTimer.c
new file mode 100644
index 000000000000..980854d67b72
--- /dev/null
+++ b/MdeModulePkg/Library/BaseRngLibTimerLib/RngLibTimer.c
@@ -0,0 +1,192 @@
+/** @file
+ BaseRng Library that uses the TimerLib to provide reasonably random numbers.
+ Do not use this on a production system.
+
+ Copyright (c) Microsoft Corporation.
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Base.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/TimerLib.h>
+
+#define DEFAULT_DELAY_TIME_IN_MICROSECONDS 10
+
+/**
+ Using the TimerLib GetPerformanceCounterProperties() we delay
+ for enough time for the PerformanceCounter to increment.
+
+ If the return value from GetPerformanceCounterProperties (TimerLib)
+ is zero, this function will return 10 and attempt to assert.
+ **/
+STATIC
+UINT32
+CalculateMinimumDecentDelayInMicroseconds (
+ VOID
+ )
+{
+ UINT64 CounterHz;
+
+ // Get the counter properties
+ CounterHz = GetPerformanceCounterProperties (NULL, NULL);
+ // Make sure we won't divide by zero
+ if (CounterHz == 0) {
+ ASSERT (CounterHz != 0); // Assert so the developer knows something is wrong
+ return DEFAULT_DELAY_TIME_IN_MICROSECONDS;
+ }
+
+ // Calculate the minimum delay based on 1.5 microseconds divided by the hertz.
+ // We calculate the length of a cycle (1/CounterHz) and multiply it by 1.5 microseconds
+ // This ensures that the performance counter has increased by at least one
+ return (UINT32)(MAX (DivU64x64Remainder (1500000, CounterHz, NULL), 1));
+}
+
+/**
+ Generates a 16-bit random number.
+
+ if Rand is NULL, then ASSERT().
+
+ @param[out] Rand Buffer pointer to store the 16-bit random value.
+
+ @retval TRUE Random number generated successfully.
+ @retval FALSE Failed to generate the random number.
+
+**/
+BOOLEAN
+EFIAPI
+GetRandomNumber16 (
+ OUT UINT16 *Rand
+ )
+{
+ UINT32 Index;
+ UINT8 *RandPtr;
+ UINT32 DelayInMicroSeconds;
+
+ ASSERT (Rand != NULL);
+
+ if (Rand == NULL) {
+ return FALSE;
+ }
+
+ DelayInMicroSeconds = CalculateMinimumDecentDelayInMicroseconds ();
+ RandPtr = (UINT8 *)Rand;
+ // Get 2 bytes of random ish data
+ for (Index = 0; Index < sizeof (UINT16); Index++) {
+ *RandPtr = (UINT8)(GetPerformanceCounter () & 0xFF);
+ // Delay to give the performance counter a chance to change
+ MicroSecondDelay (DelayInMicroSeconds);
+ RandPtr++;
+ }
+
+ return TRUE;
+}
+
+/**
+ Generates a 32-bit random number.
+
+ if Rand is NULL, then ASSERT().
+
+ @param[out] Rand Buffer pointer to store the 32-bit random value.
+
+ @retval TRUE Random number generated successfully.
+ @retval FALSE Failed to generate the random number.
+
+**/
+BOOLEAN
+EFIAPI
+GetRandomNumber32 (
+ OUT UINT32 *Rand
+ )
+{
+ UINT32 Index;
+ UINT8 *RandPtr;
+ UINT32 DelayInMicroSeconds;
+
+ ASSERT (Rand != NULL);
+
+ if (NULL == Rand) {
+ return FALSE;
+ }
+
+ RandPtr = (UINT8 *)Rand;
+ DelayInMicroSeconds = CalculateMinimumDecentDelayInMicroseconds ();
+ // Get 4 bytes of random ish data
+ for (Index = 0; Index < sizeof (UINT32); Index++) {
+ *RandPtr = (UINT8)(GetPerformanceCounter () & 0xFF);
+ // Delay to give the performance counter a chance to change
+ MicroSecondDelay (DelayInMicroSeconds);
+ RandPtr++;
+ }
+
+ return TRUE;
+}
+
+/**
+ Generates a 64-bit random number.
+
+ if Rand is NULL, then ASSERT().
+
+ @param[out] Rand Buffer pointer to store the 64-bit random value.
+
+ @retval TRUE Random number generated successfully.
+ @retval FALSE Failed to generate the random number.
+
+**/
+BOOLEAN
+EFIAPI
+GetRandomNumber64 (
+ OUT UINT64 *Rand
+ )
+{
+ UINT32 Index;
+ UINT8 *RandPtr;
+ UINT32 DelayInMicroSeconds;
+
+ ASSERT (Rand != NULL);
+
+ if (NULL == Rand) {
+ return FALSE;
+ }
+
+ RandPtr = (UINT8 *)Rand;
+ DelayInMicroSeconds = CalculateMinimumDecentDelayInMicroseconds ();
+ // Get 8 bytes of random ish data
+ for (Index = 0; Index < sizeof (UINT64); Index++) {
+ *RandPtr = (UINT8)(GetPerformanceCounter () & 0xFF);
+ // Delay to give the performance counter a chance to change
+ MicroSecondDelay (DelayInMicroSeconds);
+ RandPtr++;
+ }
+
+ return TRUE;
+}
+
+/**
+ Generates a 128-bit random number.
+
+ if Rand is NULL, then ASSERT().
+
+ @param[out] Rand Buffer pointer to store the 128-bit random value.
+
+ @retval TRUE Random number generated successfully.
+ @retval FALSE Failed to generate the random number.
+
+**/
+BOOLEAN
+EFIAPI
+GetRandomNumber128 (
+ OUT UINT64 *Rand
+ )
+{
+ ASSERT (Rand != NULL);
+ // This should take around 80ms
+
+ // Read first 64 bits
+ if (!GetRandomNumber64 (Rand)) {
+ return FALSE;
+ }
+
+ // Read second 64 bits
+ return GetRandomNumber64 (++Rand);
+}
diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
index db3b5af53795..c7af921782ee 100644
--- a/MdeModulePkg/MdeModulePkg.dsc
+++ b/MdeModulePkg/MdeModulePkg.dsc
@@ -345,6 +345,7 @@ [Components]
MdeModulePkg/Library/BaseBmpSupportLib/BaseBmpSupportLib.inf
MdeModulePkg/Library/DisplayUpdateProgressLibGraphics/DisplayUpdateProgressLibGraphics.inf
MdeModulePkg/Library/DisplayUpdateProgressLibText/DisplayUpdateProgressLibText.inf
+ MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
MdeModulePkg/Application/BootManagerMenuApp/BootManagerMenuApp.inf
diff --git a/NetworkPkg/NetworkPkg.dsc b/NetworkPkg/NetworkPkg.dsc
index 6c231c97b544..808c6bffce2c 100644
--- a/NetworkPkg/NetworkPkg.dsc
+++ b/NetworkPkg/NetworkPkg.dsc
@@ -82,10 +82,10 @@ [LibraryClasses.ARM, LibraryClasses.AARCH64]
ArmSoftFloatLib|ArmPkg/Library/ArmSoftFloatLib/ArmSoftFloatLib.inf
[LibraryClasses.ARM]
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
[LibraryClasses.RISCV64]
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
[PcdsFeatureFlag]
gEfiMdePkgTokenSpaceGuid.PcdComponentName2Disable|TRUE
diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index 2c6ed7c9745f..022104dfdce6 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -185,7 +185,7 @@ [LibraryClasses]
IntrinsicLib|CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
AuthVariableLib|MdeModulePkg/Library/AuthVariableLibNull/AuthVariableLibNull.inf
VarCheckLib|MdeModulePkg/Library/VarCheckLib/VarCheckLib.inf
diff --git a/OvmfPkg/Bhyve/BhyveX64.dsc b/OvmfPkg/Bhyve/BhyveX64.dsc
index 82c60ace1bbd..6693342c5f6e 100644
--- a/OvmfPkg/Bhyve/BhyveX64.dsc
+++ b/OvmfPkg/Bhyve/BhyveX64.dsc
@@ -196,7 +196,7 @@ [LibraryClasses]
!else
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
PlatformSecureLib|OvmfPkg/Library/PlatformSecureLib/PlatformSecureLib.inf
diff --git a/OvmfPkg/CloudHv/CloudHvX64.dsc b/OvmfPkg/CloudHv/CloudHvX64.dsc
index e000deed9e4d..35942e02df93 100644
--- a/OvmfPkg/CloudHv/CloudHvX64.dsc
+++ b/OvmfPkg/CloudHv/CloudHvX64.dsc
@@ -206,7 +206,7 @@ [LibraryClasses]
!else
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
PlatformSecureLib|OvmfPkg/Library/PlatformSecureLib/PlatformSecureLib.inf
diff --git a/OvmfPkg/IntelTdx/IntelTdxX64.dsc b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
index 193657ff2d61..bbf218488127 100644
--- a/OvmfPkg/IntelTdx/IntelTdxX64.dsc
+++ b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
@@ -184,7 +184,7 @@ [LibraryClasses]
IntrinsicLib|CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
PlatformSecureLib|OvmfPkg/Library/PlatformSecureLib/PlatformSecureLib.inf
diff --git a/OvmfPkg/Microvm/MicrovmX64.dsc b/OvmfPkg/Microvm/MicrovmX64.dsc
index 2f7585639374..d5c1a2fe3a91 100644
--- a/OvmfPkg/Microvm/MicrovmX64.dsc
+++ b/OvmfPkg/Microvm/MicrovmX64.dsc
@@ -203,7 +203,7 @@ [LibraryClasses]
!else
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
PlatformSecureLib|OvmfPkg/Library/PlatformSecureLib/PlatformSecureLib.inf
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index ed36935770f3..c1f1733a483d 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -210,7 +210,7 @@ [LibraryClasses]
!else
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
PlatformSecureLib|OvmfPkg/Library/PlatformSecureLib/PlatformSecureLib.inf
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 919315e4cb33..bdd6c3bc96ae 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -215,7 +215,7 @@ [LibraryClasses]
!else
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
PlatformSecureLib|OvmfPkg/Library/PlatformSecureLib/PlatformSecureLib.inf
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 823de0d0f9e0..a54e17dd087d 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -231,7 +231,7 @@ [LibraryClasses]
!else
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
PlatformSecureLib|OvmfPkg/Library/PlatformSecureLib/PlatformSecureLib.inf
diff --git a/OvmfPkg/OvmfXen.dsc b/OvmfPkg/OvmfXen.dsc
index 210578c1d74d..26d2a6963de5 100644
--- a/OvmfPkg/OvmfXen.dsc
+++ b/OvmfPkg/OvmfXen.dsc
@@ -194,7 +194,7 @@ [LibraryClasses]
!else
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
AuthVariableLib|MdeModulePkg/Library/AuthVariableLibNull/AuthVariableLibNull.inf
VarCheckLib|MdeModulePkg/Library/VarCheckLib/VarCheckLib.inf
diff --git a/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc b/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc
index bc204ba5fe52..fe320525153f 100644
--- a/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc
+++ b/OvmfPkg/RiscVVirt/RiscVVirt.dsc.inc
@@ -118,7 +118,7 @@ [LibraryClasses.common]
OpensslLib|CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf
!endif
BaseCryptLib|CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
#
# Secure Boot dependencies
diff --git a/SecurityPkg/SecurityPkg.dsc b/SecurityPkg/SecurityPkg.dsc
index 3c62205162ce..7682066cd9fe 100644
--- a/SecurityPkg/SecurityPkg.dsc
+++ b/SecurityPkg/SecurityPkg.dsc
@@ -92,10 +92,10 @@ [LibraryClasses.ARM, LibraryClasses.AARCH64]
ArmTrngLib|MdePkg/Library/BaseArmTrngLibNull/BaseArmTrngLibNull.inf
[LibraryClasses.ARM]
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
[LibraryClasses.RISCV64]
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
[LibraryClasses.X64.SEC]
HashLib|SecurityPkg/Library/HashLibTdx/HashLibTdx.inf
diff --git a/SignedCapsulePkg/SignedCapsulePkg.dsc b/SignedCapsulePkg/SignedCapsulePkg.dsc
index 8a27207a6f20..4c656666e981 100644
--- a/SignedCapsulePkg/SignedCapsulePkg.dsc
+++ b/SignedCapsulePkg/SignedCapsulePkg.dsc
@@ -110,10 +110,10 @@ [LibraryClasses.AARCH64, LibraryClasses.ARM]
NULL|MdePkg/Library/BaseStackCheckLib/BaseStackCheckLib.inf
[LibraryClasses.ARM]
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
[LibraryClasses.RISCV64]
- RngLib|MdePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
+ RngLib|MdeModulePkg/Library/BaseRngLibTimerLib/BaseRngLibTimerLib.inf
[LibraryClasses.common.PEI_CORE]
HobLib|MdePkg/Library/PeiHobLib/PeiHobLib.inf
--
2.25.1
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