Re: F41 Change Proposal: Make OpenSSL distrust SHA-1 signatures by default (system-wide)

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

 



Hi Vitaly,

> On 9. Jun 2024, at 09:15, Vitaly Zaitsev via devel <devel@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
> 
> On 08/06/2024 00:43, Aoife Moloney wrote:
>> OpenSSL will no longer trust cryptographic signatures using SHA-1 by
>> default, starting from Fedora 41.
> 
> What about Git? AFAIK, AFAIK, Git heavily uses both SHA-1 and SHA-2 to validate objects and commits.

Just to make sure: This proposed change does *not* disallow the use of SHA-1 for hashing (which is what git does).

It only prevents the use of SHA-1 for signing and signature verification. Git’s signature support [1] uses the OpenPGP packet format, which can (and in practice likely does) contain a different hash of the signed content, over which it creates a signature, so even commits with a SHA-1 commit ID can be signed in a fashion that will continue to validate with this change.


-- 
Clemens Lang
RHEL Crypto Team
Red Hat


--
_______________________________________________
devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Fedora Announce]     [Fedora Users]     [Fedora Kernel]     [Fedora Testing]     [Fedora Formulas]     [Fedora PHP Devel]     [Kernel Development]     [Fedora Legacy]     [Fedora Maintainers]     [Fedora Desktop]     [PAM]     [Red Hat Development]     [Gimp]     [Yosemite News]

  Powered by Linux