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Diffstat (limited to 'share/man/man4/random.4')
| -rw-r--r-- | share/man/man4/random.4 | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/share/man/man4/random.4 b/share/man/man4/random.4 index 840bc0c3234b..04d46e4d32aa 100644 --- a/share/man/man4/random.4 +++ b/share/man/man4/random.4 @@ -21,7 +21,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd April 19, 2019 +.Dd August 28, 2025 .Dt RANDOM 4 .Os .Sh NAME @@ -132,6 +132,17 @@ are listed in square brackets. See .Xr random_harvest 9 for more on the harvesting of entropy. +.Pp +The +.Va kern.random.nist_healthtest_enabled +tunable can be used to enable the entropy source health tests outlined +in section 4 of NIST Special Publication 800-90B. +When enabled, all entropy sources will be subject to the repetition +count and adaptive proportion tests described in that document. +If one of the tests fails, the source will be disabled, i.e., all +subsequent entropy samples from that source will be discarded. +The implementation performs startup testing, during which entropy +sources are discarded. .Sh FILES .Bl -tag -width ".Pa /dev/urandom" .It Pa /dev/random |