Hi,

On 25/03/2021 20:29, Matthias Andree wrote:
> I find the reasons you present to withdraw the symmetric non-TLS mode
> too weak to justify its deprecation or removal. Yes, TLS-based
> configurations may be more feature-rich, but those are not mandatory and
> we should not paternalize the users here. Is there a considerable
> technical debt to keeping the --secret option?  WireGuard seems to be
> becoming quite popular and it provides low-ceremony setups - just as
> openvpn --secret does. 
> 

The new --peer-fingerprint option offers a similar "quick setup" feature
that old users of --secret may want to switch to.

> And to make a blunt point, it's not useless just because it's old, else
> we should nuke DNS and SMTP.

It's not about being old. It's about being insecure.

With --secret (i.e. PSK encryption) there is no key renegotiation/rotation.
This means IVs will be eventually re-used, which translates to
encryption losing part of its strength.

This is unacceptable and users should be prevented from hitting this
situation.

Regards,

-- 
Antonio Quartulli


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