From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id CC6353858C52; Sat, 6 Aug 2022 13:54:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CC6353858C52 From: "crrodriguez at opensuse dot org" To: glibc-bugs@sourceware.org Subject: [Bug libc/29437] arc4random is too slow Date: Sat, 06 Aug 2022 13:54:17 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: libc X-Bugzilla-Version: 2.36 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: crrodriguez at opensuse dot org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: security- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: glibc-bugs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Glibc-bugs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Aug 2022 13:54:18 -0000 https://sourceware.org/bugzilla/show_bug.cgi?id=3D29437 --- Comment #4 from Cristian Rodr=C3=ADguez --- (In reply to Miroslav Lichvar from comment #0) > This can be fixed easily in the chrony source code, but I thought it might > be a good example of a real-world application impacted by this change and > there could be others. You need a PRNG, seeded by a single call to arc4random_buf.. (xoroshiro128+= ?) People are unfortunately rejecting your usecase as invalid because this does not require a csprng. :-( (to me that sums up everything that is wrong, you known you don't need one, but notmal averege joe programmer has no idea of = all the subtleties ans is stuck with using random() ..) --=20 You are receiving this mail because: You are on the CC list for the bug.=