Hi,

> On 10. Jun 2024, at 20:16, Richard W.M. Jones <rjo...@redhat.com> wrote:
> 
> On Mon, Jun 10, 2024 at 01:43:57PM +0200, Vít Ondruch wrote:
>> I wish this proposal included some examples of what might get broken
>> and what will keep working. I guess I am not the only one who have
>> very vague understanding what is difference between "signatures" and
>> "hashing" or other purposes SHA1 can be used for.
> 
> SSH and HTTPS to old machines (even old versions of Fedora & RHEL) and
> to old network equipment and the like will not be possible.
> 
> I'm annoyed that this is not just put behind the LEGACY policy, since
> if that's not what "legacy" is for, what _is_ it for?

I’m pretty sure Alex was planning to keep SHA-1 signatures working in the 
LEGACY policy, or even DEFAULT:SHA-1 (as it currently is on RHEL 9).

It isn’t explicitly spelled out in the proposal. What the proposal does say, 
though, is that you can use FEDORA40 as policy.


> As an aside, it'd be very nice if policies could be set per-process.
> That would greatly enhance security by allowing specific programs to
> connect to the legacy machines, while maintaining general system
> security.

See this text in the proposal (emphasis mine):

Users that need the previous behaviour and don't mind the security implications 
will be able to revert to the old behavior system-wide (update-crypto-policies 
--set FEDORA40) or ***per-process (runcp FEDORA40 command args, requires a 
copr-packaged tool)***.


-- 
Clemens Lang
RHEL Crypto Team
Red Hat


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