[openssl-users] May I ask you about the master-key in openssl s_client command result?
stiju.easo at gmail.com
Thu Sep 27 05:01:39 UTC 2018
Just an Info, may not be relevant.
If extended master secret is enabled,(by default on all browsers now a
the computation of master secret is different.
On Thu, Sep 27, 2018 at 7:25 AM Viktor Dukhovni <openssl-users at dukhovni.org>
> > On Sep 26, 2018, at 9:19 PM, 이영주 <shinejaekal at naver.com> wrote:
> > I wonder why master-key is revealed in plaintext in the results below.
> > (used command : Openssl s_client -connect host:port)
> Because s_client is a debugging tool, and a source of example code
> that demonstrates many elaborate features of the API from which you
> can pic and chose the functions that are useful to you. The s_client
> command is NOT designed to be used for any non-diagnostic purposes.
> > Does it matter if the master key is exposed in plaintext?
> That's a feature. You can check when using s_server that both computed
> the same key.
> > And I wonder what role this master key plays.
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