From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikos Mavrogiannopoulos Subject: Re: [patch] getrandom.2, random.4: Consolidate and improve discussion on usage of randomness Date: Fri, 11 Nov 2016 18:02:12 +0100 Message-ID: <1478883732.21107.3.camel@redhat.com> References: <55B65DAC.6010906@lgeorget.eu> <2fc34759-5d2b-4192-9611-b499e23efdf8@gmail.com> <1478767372.2642.15.camel@redhat.com> <1478788558.3579.47.camel@redhat.com> <66494ef9-80d1-e437-252a-4a15e1f497db@lgeorget.eu> <02c2fa67-ce72-010b-e1ac-ae52c1bc6cf2@gmail.com> <1478850099.2484.7.camel@redhat.com> <48e730fc-4eeb-189e-92b4-eaa2720d3eda@supelec.fr> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Laurent Georget , mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Cc: Carl =?ISO-8859-1?Q?Winb=E4ck?= , linux-man , Stephan Mueller , George Spelvin , Theodore T'so , Matt Mackall , Ivan Babrou , matt-6J8q6J5oQjkQrrorzV6ljw@public.gmane.org, Luke Bratch , Onkar Mahajan List-Id: linux-man@vger.kernel.org On Fri, 2016-11-11 at 13:08 +0100, Laurent Georget wrote: > +.I /dev/urandom > +T} T{ > +Cryptographically-secure Random Number Generator (CRNG) output > +T} T{ > +Does not block once the CRNG is ready > +T} T{ > +Returns output from uninitialized CRNG (possibly low entropy and not > suitable for cryptography) I'd make that specific, and mention early boot explicitly, otherwise it implies that this always returns from an uninitialized CRNG. This is a limitation that applies only for applications started on early boot; for the majority of applications this is not applicable. regards, Nikos -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html