Date: Tue, 20 Aug 2013 08:14:32 +0100 From: Mark R V Murray <mark@grondar.org> To: Tim Kientzle <tim@kientzle.com> Cc: =?iso-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no>, secteam@freebsd.org, FreeBSD-arch Arch <freebsd-arch@freebsd.org> Subject: Re: random(4) plugin infrastructure for mulitple RNG in a modular fashion Message-ID: <FAF7D9AA-77A4-4DE7-828C-4DAC6AF71C5D@grondar.org> In-Reply-To: <B88139AA-B134-4E11-BE4D-B139A311D45F@kientzle.com> References: <20130807183112.GA79319@dragon.NUXI.org> <86pptfnu33.fsf@nine.des.no> <20130815231713.GD76666@x96.org> <20130816002625.GE76666@x96.org> <9B274F48-0C88-4117-BEAC-1A555772A3C5@grondar.org> <86a9kf733d.fsf@nine.des.no> <0C97B866-A169-4141-8368-AA7F5B5382F4@grondar.org> <861u5r71zi.fsf@nine.des.no> <892B11BD-396D-4F82-B97C-753F72CA494D@grondar.org> <86r4dr5j3p.fsf@nine.des.no> <4C1BD77C-8C6B-4044-9285-5978A3BC4B70@kientzle.com> <537622E1-F785-4BFA-B829-09DCDB484606@grondar.org> <932AB5CA-778E-438D-8FD3-8C0F29F3D117@kientzle.com> <F908BF80-538B-4363-ACCC-3D860CBEE359@grondar.org> <71A92486-2213-421E-B3D2-E55816C18924@bsdimp.com> <D218D7B1-AB8B-4A80-A822-A8F0AB1EF43C@grondar.org> <551C488B-D56A-4E9F-8617-17B96D3E7677@bsdimp.com> <B88139AA-B134-4E11-BE4D-B139A311D45F@kientzle.com>
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--Apple-Mail=_6ACAF6A4-0C52-4CB0-B00A-E1953DB22B11 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 On 20 Aug 2013, at 04:12, Tim Kientzle <tim@kientzle.com> wrote: >=20 > I've not heard anyone asking for a run-time switch in > GENERIC. des@ is the main one, and its what we have right now in CURRENT. > I would suggest making that a longer-term option > and having the choice of mixer/conditioner > (Yarrow, Fortuna, or HW passthrough) be > a compile-time choice for now. Too late. :-) Questions needing answering now include "should Yarrow/Fortuna be = run-time choosable?", "there are more than two hardware RNGs (Ivy, = Nehemiah) in the system, how do we best make them available?", "if more = than one HW RNG is present, do we mix them, and how?", "if the requested = configuration does not give you a random number supply, does the system = block or panic?". >>>> I'd go so far as to say that if you have random in your kernel, = then you need to specify some "filter" or you get a compile-time error. = Specifying yarrow via DEFAULTS or std.foo is fine by me, since both of = those can be overriden fairly easily.... I'd also think we'd want to = FAIL_PANIC or FAIL_BLOCKING, and have that choice hard wired at some = level too, to be explicit about things. But maybe that's gilding things = a bit too much and a tunable would suffice=85 >>>=20 >>> Won't sell. Folks are saying they want the choice of the raw output. = In GENERIC. >=20 > I've not heard anyone asking for raw output in GENERIC. There have been a couple. Again des@ is the one I remember most clearly = off the top of my head. M --=20 Mark R V Murray --Apple-Mail=_6ACAF6A4-0C52-4CB0-B00A-E1953DB22B11 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.20 (Darwin) Comment: GPGTools - http://gpgtools.org iQCVAwUBUhMXXt58vKOKE6LNAQpnVgP/SpHWG57QnGkwzVlIHAMIRPamtG5EUfn9 Cxyd9t8oIe/Wgmut7IIdBJhCc8TiuiP5fMR9W8qDeQaU4uKuW2GjQXaHnBRwDKE7 jxIx6nzkaOFDtfCRKRESbOO80Zv+4LteRZ1xvGwqEaigtZzVu2ZsevW2JCJ8OWOj VyIidYtffnU= =N0gm -----END PGP SIGNATURE----- --Apple-Mail=_6ACAF6A4-0C52-4CB0-B00A-E1953DB22B11--
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