Date: Fri, 6 Sep 2013 17:51:53 +0000 (UTC) From: Mark Murray <markm@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r255319 - in projects/random_number_generator/sys: dev/glxsb dev/hifn dev/rndtest dev/safe dev/ubsec mips/cavium Message-ID: <201309061751.r86HpruL066305@svn.freebsd.org>
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Author: markm Date: Fri Sep 6 17:51:52 2013 New Revision: 255319 URL: http://svnweb.freebsd.org/changeset/base/255319 Log: Yarrow wants entropy estimations to be conservative; the usual idea is that if you are certain you have N bits of entropy, you declare N/2. Modified: projects/random_number_generator/sys/dev/glxsb/glxsb.c projects/random_number_generator/sys/dev/hifn/hifn7751.c projects/random_number_generator/sys/dev/rndtest/rndtest.c projects/random_number_generator/sys/dev/safe/safe.c projects/random_number_generator/sys/dev/ubsec/ubsec.c projects/random_number_generator/sys/mips/cavium/octeon_rnd.c Modified: projects/random_number_generator/sys/dev/glxsb/glxsb.c ============================================================================== --- projects/random_number_generator/sys/dev/glxsb/glxsb.c Fri Sep 6 17:44:13 2013 (r255318) +++ projects/random_number_generator/sys/dev/glxsb/glxsb.c Fri Sep 6 17:51:52 2013 (r255319) @@ -476,7 +476,7 @@ glxsb_rnd(void *v) if (status & SB_RNS_TRNG_VALID) { value = bus_read_4(sc->sc_sr, SB_RANDOM_NUM); /* feed with one uint32 */ - random_harvest(&value, 4, 32, 0, RANDOM_PURE); + random_harvest(&value, 4, 32/2, 0, RANDOM_PURE); } callout_reset(&sc->sc_rngco, sc->sc_rnghz, glxsb_rnd, sc); Modified: projects/random_number_generator/sys/dev/hifn/hifn7751.c ============================================================================== --- projects/random_number_generator/sys/dev/hifn/hifn7751.c Fri Sep 6 17:44:13 2013 (r255318) +++ projects/random_number_generator/sys/dev/hifn/hifn7751.c Fri Sep 6 17:51:52 2013 (r255319) @@ -258,7 +258,7 @@ hifn_partname(struct hifn_softc *sc) static void default_harvest(struct rndtest_state *rsp, void *buf, u_int count) { - random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE); + random_harvest(buf, count, count*NBBY/2, 0, RANDOM_PURE); } static u_int Modified: projects/random_number_generator/sys/dev/rndtest/rndtest.c ============================================================================== --- projects/random_number_generator/sys/dev/rndtest/rndtest.c Fri Sep 6 17:44:13 2013 (r255318) +++ projects/random_number_generator/sys/dev/rndtest/rndtest.c Fri Sep 6 17:51:52 2013 (r255319) @@ -152,7 +152,7 @@ rndtest_harvest(struct rndtest_state *rs for (len /= sizeof (u_int32_t); len; len--) add_true_randomness(*p++); #else - random_harvest(buf, len, len*NBBY, 0, RANDOM_PURE); + random_harvest(buf, len, len*NBBY/2, 0, RANDOM_PURE); #endif } } Modified: projects/random_number_generator/sys/dev/safe/safe.c ============================================================================== --- projects/random_number_generator/sys/dev/safe/safe.c Fri Sep 6 17:44:13 2013 (r255318) +++ projects/random_number_generator/sys/dev/safe/safe.c Fri Sep 6 17:51:52 2013 (r255319) @@ -211,7 +211,7 @@ safe_partname(struct safe_softc *sc) static void default_harvest(struct rndtest_state *rsp, void *buf, u_int count) { - random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE); + random_harvest(buf, count, count*NBBY/2, 0, RANDOM_PURE); } #endif /* SAFE_NO_RNG */ Modified: projects/random_number_generator/sys/dev/ubsec/ubsec.c ============================================================================== --- projects/random_number_generator/sys/dev/ubsec/ubsec.c Fri Sep 6 17:44:13 2013 (r255318) +++ projects/random_number_generator/sys/dev/ubsec/ubsec.c Fri Sep 6 17:51:52 2013 (r255319) @@ -259,7 +259,7 @@ ubsec_partname(struct ubsec_softc *sc) static void default_harvest(struct rndtest_state *rsp, void *buf, u_int count) { - random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE); + random_harvest(buf, count, count*NBBY/2, 0, RANDOM_PURE); } static int Modified: projects/random_number_generator/sys/mips/cavium/octeon_rnd.c ============================================================================== --- projects/random_number_generator/sys/mips/cavium/octeon_rnd.c Fri Sep 6 17:44:13 2013 (r255318) +++ projects/random_number_generator/sys/mips/cavium/octeon_rnd.c Fri Sep 6 17:51:52 2013 (r255319) @@ -131,7 +131,7 @@ octeon_rnd_harvest(void *arg) for (i = 0; i < OCTEON_RND_WORDS; i++) sc->sc_entropy[i] = cvmx_rng_get_random64(); random_harvest(sc->sc_entropy, sizeof sc->sc_entropy, - sizeof sc->sc_entropy * 8, 0, RANDOM_PURE); + (sizeof(sc->sc_entropy)*8)/2, 0, RANDOM_PURE); callout_reset(&sc->sc_callout, hz * 5, octeon_rnd_harvest, sc); }
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