Hi Alex,

our device is unattended, not always on, and in some cases in only semi-secured locations. Besides preventing root access, we also need to protect against the hacking of a stolen device (or disk).

Human interaction is not practical (other than in exceptional situations).

Roger


> On Nov 15, 2018, at 2:41 PM, Alex Samad <alex@samad.com.au> wrote:
>
> HI
>
> isn't this a bit futile, if they can get onto the box that has nginx they can get either the private key or secret to get the private key.
>
> safer would be to make it that you need human interact to start nginx.
>
> But till a memory dump of the app would get you the private key.
>
>
>
>
> On Fri, 16 Nov 2018 at 00:03, Maxim Dounin <mdounin@mdounin.ru <mailto:mdounin@mdounin.ru>> wrote:
> Hello!
>
> On Wed, Nov 14, 2018 at 12:17:57PM -0800, Roger Fischer wrote:
>
> > Hello,
> >
> > does NGINX support any mechanisms to securely access the private
> > key of server certificates?
> >
> > Specifically, could NGINX make a request to a key store, rather
> > than reading from a local file?
> >
> > Are there any best practices for keeping private keys secure?
> >
> > I understand the basics. The key file should only be readable by
> > root. I cannot protect the key with a pass-phrase, as NGINX
> > needs to start and restart autonomously.
>
> You actually can protect the key using a passphrase, see
> http://nginx.org/r/ssl_password_file http://nginx.org/r/ssl_password_file. Though this might not be
> the best idea due to basically the same security provided, while
> involving higher complexity.
>
> Also, you can use "engine:..." syntax to load keys via OpenSSL
> engines. This allows using various complex key stores, including
> hardware tokens, to access keys, though may not be trivial to
> configure.
>
> --
> Maxim Dounin
> http://mdounin.ru/ http://mdounin.ru/
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