From: Pierre Gondois <pierre.gond...@arm.com> v3: - As the unsafe algorithm GUID will not be added to the UEFI specification, rename: - gEfiRngAlgorithmUnSafe to gEdkiiRngAlgorithmUnSafe - EFI_RNG_ALGORITHM_UNSAFE to EDKII_RNG_ALGORITHM_UNSAFE
v2: [1/8] MdePkg/ArmTrngLib: Remove ASSERTs in Null implementation - Dropped [2/8] MdePkg/MdePkg.dec: Move PcdCpuRngSupportedAlgorithm to MdePkg - Change gEfiMdePkgTokenSpaceGuid.PcdCpuRngSupportedAlgorithm token number - Rename to SecurityPkg/SecurityPkg.dec: Move PcdCpuRngSupportedAlgorithm to MdePkg [5/8] MdePkg/Rng: Add GetRngGuid() to RngLib - Remove gEfiRngAlgorithmUnSafe from inf file - Split Guids definitions in arch specific sections [6/8] SecurityPkg/RngDxe: Use GetRngGuid() when probing RngLib - Remove RngFindDefaultAlgo() and change logic accordingly. [7/8] SecurityPkg/RngDxe: Select safe default Rng algorithm - Dropped due to changes in [6/8] This patch also requires the following patch on top of the serie: - https://edk2.groups.io/g/devel/message/106546 This patchset follows the 'code first' approach and relates to [1]. This patchset follows the thread at [3] that aims to solve [2]. [1] and [2] are bound and this patchset aims to solve both. In this patchset: a- The RngDxe can rely on the RngLib. However the RngLib has no interface allowing to describe which Rng algorithm is implemented. The RngDxe must advertise the algorithm that are available through the RngGetInfo() callback. Add a GetRngGuid() for interface to the RngLib. b- The Arm Architecture states the RNDR that the DRBG algorithm should be compliant with NIST SP800-90A, while not mandating a particular algorithm, so as to be inclusive of different geographies. The RngLib can rely on this Arm RNDR instruction. In order to accurately describe the implementation using the RNDR instruction, add a EFI_RNG_ALGORITHM_ARM_RNDR GUID [1]. c- For the same reason as a/b, add a GUID describing unsafe RNG algorithms, allowing to accurately describe the BaseRngLibTimerLib. d- Use a/b/c mechanisms/GUIDs to select a safe Rng algorithm in the Arm implementation of the RngDxe. [1] BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4441 [2] BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4151 [3] https://edk2.groups.io/g/devel/message/100806 Pierre Gondois (6): SecurityPkg/SecurityPkg.dec: Move PcdCpuRngSupportedAlgorithm to MdePkg MdePkg/DxeRngLib: Request raw algorithm instead of default MdePkg/Rng: Add GUIDs to describe Rng algorithms MdePkg/Rng: Add GetRngGuid() to RngLib SecurityPkg/RngDxe: Use GetRngGuid() when probing RngLib SecurityPkg/RngDxe: Simplify Rng algorithm selection for Arm MdePkg/Include/Library/RngLib.h | 17 ++++++ MdePkg/Include/Protocol/Rng.h | 20 +++++++ MdePkg/Library/BaseRngLib/AArch64/Rndr.c | 42 +++++++++++++++ MdePkg/Library/BaseRngLib/BaseRngLib.inf | 10 ++++ MdePkg/Library/BaseRngLib/Rand/RdRand.c | 26 +++++++++ .../Library/BaseRngLibNull/BaseRngLibNull.c | 22 ++++++++ .../BaseRngLibTimerLib/BaseRngLibTimerLib.inf | 3 ++ .../Library/BaseRngLibTimerLib/RngLibTimer.c | 28 ++++++++++ MdePkg/Library/DxeRngLib/DxeRngLib.c | 36 ++++++++++++- MdePkg/MdePkg.dec | 7 +++ .../RngDxe/AArch64/AArch64Algo.c | 54 +++++++++++++------ .../RandomNumberGenerator/RngDxe/ArmRngDxe.c | 23 ++++---- .../RandomNumberGenerator/RngDxe/RngDxe.inf | 5 +- SecurityPkg/SecurityPkg.dec | 2 - 14 files changed, 258 insertions(+), 37 deletions(-) -- 2.25.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#106685): https://edk2.groups.io/g/devel/message/106685 Mute This Topic: https://groups.io/mt/99981851/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
