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| author | Pierre Gondois <pierre.gondois@arm.com> | 2023-08-11 16:33:06 +0200 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-09-08 09:48:55 +0000 |
| commit | cf07238e5fa4f8b1138ac1c9e80530b4d4e59f1c (patch) | |
| tree | 6b3de570f5c4fc28b0b6b89cd46729177cb1bc08 /MdePkg/Include | |
| parent | bd1f0eecc1dfe51ba20161bef8860d12392006bd (diff) | |
| download | edk2-cf07238e5fa4f8b1138ac1c9e80530b4d4e59f1c.tar.gz edk2-cf07238e5fa4f8b1138ac1c9e80530b4d4e59f1c.tar.bz2 edk2-cf07238e5fa4f8b1138ac1c9e80530b4d4e59f1c.zip | |
MdePkg/Rng: Add GUID to describe Arm Rndr Rng algorithms
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4441
The EFI_RNG_PROTOCOL can rely on the RngLib. The RngLib has multiple
implementations, some of them are unsafe (e.g. BaseRngLibTimerLib).
To allow the RngDxe to detect when such implementation is used,
a GetRngGuid() function is added in a following patch.
Prepare GetRngGuid() return values and add a gEfiRngAlgorithmArmRndr
to describe a Rng algorithm accessed through Arm's RNDR instruction.
[1] states that the implementation of this algorithm should be
compliant to NIST SP900-80. The compliance is not guaranteed.
[1] Arm Architecture Reference Manual Armv8, for A-profile architecture
sK12.1 'Properties of the generated random number'
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Kun Qin <kun.qin@microsoft.com>
Diffstat (limited to 'MdePkg/Include')
| -rw-r--r-- | MdePkg/Include/Protocol/Rng.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/MdePkg/Include/Protocol/Rng.h b/MdePkg/Include/Protocol/Rng.h index baf425587b..38bde53240 100644 --- a/MdePkg/Include/Protocol/Rng.h +++ b/MdePkg/Include/Protocol/Rng.h @@ -67,6 +67,15 @@ typedef EFI_GUID EFI_RNG_ALGORITHM; { \
0xe43176d7, 0xb6e8, 0x4827, {0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61 } \
}
+///
+/// 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.
+///
+#define EFI_RNG_ALGORITHM_ARM_RNDR \
+ { \
+ 0x43d2fde3, 0x9d4e, 0x4d79, {0x02, 0x96, 0xa8, 0x9b, 0xca, 0x78, 0x08, 0x41} \
+ }
/**
Returns information about the random number generation implementation.
@@ -146,5 +155,6 @@ extern EFI_GUID gEfiRngAlgorithmSp80090Ctr256Guid; extern EFI_GUID gEfiRngAlgorithmX9313DesGuid;
extern EFI_GUID gEfiRngAlgorithmX931AesGuid;
extern EFI_GUID gEfiRngAlgorithmRaw;
+extern EFI_GUID gEfiRngAlgorithmArmRndr;
#endif
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