Michael Brown 471599dc77 [efi] Split out EFI_RNG_PROTOCOL as a separate entropy source
Commit 7ca801d ("[efi] Use the EFI_RNG_PROTOCOL as an entropy source
if available") added EFI_RNG_PROTOCOL as an alternative entropy source
via an ad-hoc mechanism specific to efi_entropy.c.

Split out EFI_RNG_PROTOCOL to a separate entropy source, and allow the
entropy core to handle the selection of RDRAND, EFI_RNG_PROTOCOL, or
timer ticks as the active source.

The fault detection logic added in commit a87537d ("[efi] Detect and
disable seriously broken EFI_RNG_PROTOCOL implementations") may be
removed completely, since the failure will already be detected by the
generic ANS X9.82-mandated repetition count test and will now be
handled gracefully by the entropy core.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2023-02-20 14:53:10 +00:00
2015-02-26 17:59:53 +00:00
2010-05-28 00:03:47 +01:00

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