Re: [PATCH v8 06/15] x86: Add early SHA support for Secure Launch early measurements

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 23/02/2024 5:54 pm, Eric Biggers wrote:
> On Fri, Feb 23, 2024 at 04:42:11PM +0000, Andrew Cooper wrote:
>> Yes, and I agree.  We're not looking to try and force this in with
>> underhand tactics.
>>
>> But a blind "nack to any SHA-1" is similarly damaging in the opposite
>> direction.
>>
> Well, reviewers have said they'd prefer that SHA-1 not be included and given
> some thoughtful reasons for that.  But also they've given suggestions on how to
> make the SHA-1 support more palatable, such as splitting it into a separate
> patch and giving it a proper justification.
>
> All suggestions have been ignored.

The public record demonstrates otherwise.

But are you saying that you'd be happy if the commit message read
something more like:

---8<---
For better or worse, Secure Launch needs SHA-1 and SHA-256.

The choice of hashes used lie with the platform firmware, not with
software, and is often outside of the users control.

Even if we'd prefer to use SHA-256-only, if firmware elected to start us
with the SHA-1 and SHA-256 backs active, we still need SHA-1 to parse
the TPM event log thus far, and deliberately cap the SHA-1 PCRs in order
to safely use SHA-256 for everything else.
---

?

~Andrew

_______________________________________________
kexec mailing list
kexec@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/kexec




[Index of Archives]     [LM Sensors]     [Linux Sound]     [ALSA Users]     [ALSA Devel]     [Linux Audio Users]     [Linux Media]     [Kernel]     [Gimp]     [Yosemite News]     [Linux Media]

  Powered by Linux