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MdePkg: add null version of RngLib

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Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1871

This is null version of RngLib which should be used with modules that
inherit an (indirect) dependency on the RngLib class, but never actually
call RngLib APIs for consuming randomness.

To be more specific, if following components or functionalities are used
in a platform, the BaseRngLibNull should *not* be used. Instead, a non-Null
version of RngLib must be used (like BaseRngLib for IA32/X64, or future
DxeRngLibRngProtocol for all ARCHs).

- HddPasswordDxe.inf
- AES, TLS (TlsDxe.inf, TlsLib.inf), RSA_OAEP, RSA_PK1
- (If BaseRngLibNull interface ASSERTed at boot time)

Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Jian J Wang
2019-11-12 16:45:48 +08:00
committed by mergify[bot]
parent c801f33d81
commit c9af866cdd
4 changed files with 139 additions and 0 deletions
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MdePkg/MdePkg.dsc
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@@ -61,6 +61,7 @@
MdePkg/Library/BaseUefiDecompressLib/BaseUefiTianoCustomDecompressLib.inf
MdePkg/Library/BaseSmbusLibNull/BaseSmbusLibNull.inf
MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
MdePkg/Library/BaseRngLibNull/BaseRngLibNull.inf
MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf
MdePkg/Library/DxeCoreHobLib/DxeCoreHobLib.inf