Date: Tue, 7 Jun 2016 16:36:43 +1000 From: Peter Jeremy <peter@rulingia.com> To: Jia-Shiun Li <jiashiun@gmail.com> Cc: freebsd-arm@freebsd.org Subject: Re: Random number generator on rpi Message-ID: <20160607063643.GE85345@server.rulingia.com> In-Reply-To: <CAHNYxxOEPzoijb0A%2BioOj3aSSVAvbrZVzFtFeuiC69sRyn7R9A@mail.gmail.com> References: <CAHNYxxP8fqEdXsL2Jwu-=P4g9_w5P2pnJ-yOvtU1ssEP4ZpqCQ@mail.gmail.com> <20160606120302.bea809ad2b9b89d66c34ebfe@ulrich-grey.de> <20160606123146.532e0bc3862047107f2c10e2@ulrich-grey.de> <CAHNYxxOEPzoijb0A%2BioOj3aSSVAvbrZVzFtFeuiC69sRyn7R9A@mail.gmail.com>
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--24zk1gE8NUlDmwG9 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2016-Jun-07 12:25:26 +0800, Jia-Shiun Li <jiashiun@gmail.com> wrote: >Yes, that's Linux specific. And my problem is there seems no other ways to >tell rng quality on FreeBSD. FreeBSD doesn't expose hardware RNGs directly to userspace - they are used solely as entropy inputs to Yarrow, which drives /dev/random. If you want to test how random the ARM RNG is, then you will need to adapt the driver to also expose a device interface to the raw RNG data that can be read, and then find a suitable RNG test suite. If you're just concerned about the quality of /dev/random then you should read random(4). --=20 Peter Jeremy --24zk1gE8NUlDmwG9 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJXVmt7XxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRFRUIyOTg2QzMwNjcxRTc0RTY1QzIyN0Ux NkE1OTdBMEU0QTIwQjM0AAoJEBall6Dkogs0CfwP/RAt5ED0ZXsZifP3ETHmcey/ xPKSQ7Bqhimmv+Kf5c38Rja8ihHhgXxrGBvPwJqSw54+3UUZvnphhmAgh4PRagnj KOqt/d4l0nmCcP2OYZJBeaGAkYbJBsTL5zYGvBRkDlVdSVCis0keb57XR3U2BLKk g2jVj6nJrZyM2U67gvyTcOpq33NYBKWEAiSUyDM+hNN9jPSUIsGQL4D519qS6W6f 7u+PpiBr7Znh9qy8vocTuX2Use2mMN+Fmce4/FwMY6B8vDOmmPWkrEVFww9oNs16 YLL5zpCBug6VWkKqTWT56mKNwOR0p9V9QxCUOhOc1NmD6Ythvhw0CDTNVqnJhXgL cPyqIv4xYcClIzY39bA0J3bo9366TBSHm6WF/22QX1ZK9zTr2RTh9a7WSvQWYfU4 HQLBtLXj25alMgeszxStO6aCtAyNKoYQA/wLiUAk3Eauk/8T+U5dyWOgkbX2b9w0 2Aewhi+3JYMA3utVzZEs7qdNHa7lsKGo3mAyaBV7FQx1ndTPEQ2lSCBHdkR1apQh MNDiXadgicRWQfjA0J3D6OPnZdpwptoo5906fRppP9I6BUHs4XObMVAAB5VFNmCv 4EdieV/s1SDQSuF8fB0IdY+Q+QzIZYjiZJqOvsQq4RY75RDnvKn1onKwrOCBqdjW rdlFEMBWq9sle0DJxqLf =8hit -----END PGP SIGNATURE----- --24zk1gE8NUlDmwG9--
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