Re: The authenticity of pkgs.fedoraproject.org

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On Fri, Jan 08, 2021 at 05:03:34AM -0700, Brad Bell wrote:
> 1. Does this mean that 38.145.60.17 is the correct host address and I do not
> have to worry adding it to ~/.ssh/known_hosts ?
> 
Yes.

> 2. If I add the contents of
>     https://admin.fedoraproject.org/ssh_known_hosts
> starting with a new line and at the end of my ~/.ssh/known_hosts and try 'fedpkg push` I get:
> 
> cppad>fedpkg push
> check_host_cert: certificate signature algorithm ssh-rsa: signature algorithm not supported
> The authenticity of host 'pkgs.fedoraproject.org (38.145.60.17)' can't be established.
> RSA key fingerprint is SHA256:Q12OTyTeOHWlS54dTzy2BNu7wB8UKNf18+7WHIDsORc.
> Are you sure you want to continue connecting (yes/no/[fingerprint])?
> 
It seems the certificate is signed with ssh-rsa SSH alghoritm which uses SHA-1
underneath and

> 3. If I execute `dnf info openssh' I get
> 
> Name         : openssh
> Version      : 8.4p1
> Release      : 4.fc33
> 
which is not supported by openssh-8.4p1 and Fedora 33 system-wide
cryptopolicy.

I believe Fedora infrastrucure maintainers should create a new certificate
with SHA-2 instead of SHA-1.

-- Petr

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