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OpenSSL 3.0.0 in RHEL-9 does not support SHA-1 for signature creation and verification by default (SHA-1 KDFs and HMACs are still supported). However, to support backwards compatibility with RHEL-8 systems that still use SHA-1 for signatures, a new configuration option - ‘rh-allow-sha1-signatures’ is introduced in RHEL-9. This config option, if enabled in the ‘alg_section’ of openssl.cnf, additionally permits the creation and verification of SHA-1 signatures.

We would like this option would be automatically set if the LEGACY policy is set via crypto-policies. 

Exact name of the config option - rh-allow-sha1-signatures could vary. It will be implemented as part of https://bugzilla.redhat.com/show_bug.cgi?id=2031742

Can we get https://kojihub.stream.centos.org/koji/buildinfo?buildID=16754 pushed to mirrors? The package is not available yet there and it will simplify setting openssl for supporting COPR and CentOS SIGs rpms installation

(In reply to Sandro Bonazzola from comment #7)
> Can we get https://kojihub.stream.centos.org/koji/buildinfo?buildID=16754
> pushed to mirrors? The package is not available yet there and it will
> simplify setting openssl for supporting COPR and CentOS SIGs rpms
> installation

There's other work that needs to land before this can be made available.  It will be tagged in as soon as possible.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (new packages: crypto-policies), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:3953

The needinfo request[s] on this closed bug have been removed as they have been unresolved for 365 days