Date: Sat, 20 Oct 2018 20:12:58 +0000 (UTC) From: Conrad Meyer <cem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r339480 - head/sys/dev/random Message-ID: <201810202012.w9KKCwOc097426@repo.freebsd.org>
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Author: cem Date: Sat Oct 20 20:12:57 2018 New Revision: 339480 URL: https://svnweb.freebsd.org/changeset/base/339480 Log: Fortuna: Add trivial assert to match FS&K definition FS&K GenerateBlocks function asserts C (counter) != 0. This should also be true in our implementation. Reviewed by: delphij, markm Approved by: secteam (delphij) Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D16936 Modified: head/sys/dev/random/fortuna.c Modified: head/sys/dev/random/fortuna.c ============================================================================== --- head/sys/dev/random/fortuna.c Sat Oct 20 19:44:59 2018 (r339479) +++ head/sys/dev/random/fortuna.c Sat Oct 20 20:12:57 2018 (r339480) @@ -310,6 +310,8 @@ random_fortuna_genblocks(uint8_t *buf, u_int blockcoun u_int i; RANDOM_RESEED_ASSERT_LOCK_OWNED(); + KASSERT(!uint128_is_zero(fortuna_state.fs_counter), ("FS&K: C != 0")); + for (i = 0; i < blockcount; i++) { /*- * FS&K - r = r|E(K,C)
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