Date: Tue, 03 Sep 2019 14:07:07 -0000 From: Ian Lepore <ian@freebsd.org> To: cem@freebsd.org, Warner Losh <imp@bsdimp.com> Cc: src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, svn-src-head <svn-src-head@freebsd.org> Subject: Re: svn commit: r346250 - in head: share/man/man4 share/man/man9 sys/dev/random sys/kern sys/libkern sys/sys Message-ID: <0aedf8b8c91c2f9f76249c0a13e971fbb9aac16a.camel@freebsd.org> In-Reply-To: <CAG6CVpW2RSBGVZFZota4j4nDDVzKUzOKXhaJtFNO9xx1js6NrA@mail.gmail.com> References: <201904151840.x3FIeaEQ009242@repo.freebsd.org> <CAPyFy2D9NQQKwVx5MhCfasQ82x7C9s6mj5kXuDE1oogrQeoJ5A@mail.gmail.com> <CAHSQbTAfwYcLenBxg4ZB13P03S%2BTYEM1-xy3BYsSWJ49hBWLZA@mail.gmail.com> <CAG6CVpXwOhSpmCT1SShvEOZAdjbQSk5xSzk%2BLk8c5fMpnhSKQw@mail.gmail.com> <CAG6CVpUqy75_iEU-OwC21LOQFrXTO7rMz3B4iHi7GBTfsqK_5w@mail.gmail.com> <20190416150352.c604a280368ccb2992a861e8@bidouilliste.com> <CANCZdfqwfdPnr3HBAw6=YdPW_0yLsS4OpJMhiqFxWSM6BVJ-Zw@mail.gmail.com> <310a420ee0b9e12249979d89dc4fa0d4cac5a8dc.camel@freebsd.org> <CANCZdfrNsBMqKrnqVzTNVNwCcHj5ZYrKhjss_%2Bp6i=rKqwYFNA@mail.gmail.com> <CAG6CVpW_Tjz_mPmMPForKAO3gLhES63TtdNyZcg0pTkb3z%2BTRw@mail.gmail.com> <CANCZdfqsY0RAJv7fKj9Fyb34wmxCULFCFi4Ph8s2bYPWtVP6fA@mail.gmail.com> <CAG6CVpW2RSBGVZFZota4j4nDDVzKUzOKXhaJtFNO9xx1js6NrA@mail.gmail.com>
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On Tue, 2019-04-16 at 09:58 -0700, Conrad Meyer wrote: > Systems lacking both an NV store and an entropy source available > during mi_startup (i.e., not interrupts...) cannot safely provide > entropy in early boot. On those systems, we must disable random > consumption during early boot. Or you could remember that one of the core unix philosphies is "tools, not policy" and leave it to embedded systems developers to decide for themselves what's "safe" or not. Not every application needs cryptographic strength entropy, especially for things like retrying after a short random delay or generating a random MAC address or whatever. -- Ian
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