TLS Observer with openssl

Matt Caswell matt at openssl.org
Mon Jun 13 14:20:57 UTC 2022



On 13/06/2022 14:56, Kreissl, Jochen wrote:
> Hi everyone,
> 
> currently looking into setting up a TLS Observer, which can decrypt a 
> TLS message sequence.
> 
> Imagine a scenario where a GUI wants to inspect recorded TLS traffic, 
> between backend and some peer (and the GUI does/should not have access 
> to the backend context).
> 
> I have access to the Master Key (or pre-master secret), obtained for 
> example via the set_key_log_callback.
> 
> So far so good, but I struggle to find a way to set up a SSL context 
> from the master secret.
> 
> Is there a way to do this?
> 

No. That's not currently possible.

Matt


> Cheers & thanks for the help
> 
> Jochen
> 


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