Re: F38 proposal: Strong crypto settings: phase 3, forewarning 2/2 (System-Wide Change proposal)

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On Mon, Aug 29, 2022 at 02:30:44PM -0400, Ben Cotton wrote:
> https://fedoraproject.org/wiki/Changes/StrongCryptoSettings3Forewarning2
> 
> == Summary ==
> 
> Cryptographic policies will be tightened in Fedora ''38''-39,
> SHA-1 signatures will no longer be trusted by default.
> Fedora ''38'' will do a "jump scare", introducing the change but then
> reverting it in time for Beta.
> Test your setup with TEST-FEDORA39 today and file bugs in advance so
> you won't get bit by Fedora ''38''-39.

This breaks a bunch of V2V use cases where we want to examine old
guests which have RPM databases using SHA1.  Also we want to ssh to
remote machines running RHEL 5-era sshd.

> The flagship change this time will be distrusting SHA-1 signatures
> on the cryptographic library level, affecting more than just TLS.
>
> OpenSSL will start blocking signature creation and verification by default,
> with the fallout anticipated to be wide enough
> for us to roll out the change across multiple cycles
> with multiple forewarnings
> to give developers and maintainers ample time to react:

The openssl change was a bad idea in RHEL 9, and it's going to be a
bad idea in Fedora too.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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