• Neil Horman's avatar
    random: Add optional continuous repetition test to entropy store based rngs · 5b739ef8
    Neil Horman authored
    FIPS-140 requires that all random number generators implement continuous self
    tests in which each extracted block of data is compared against the last block
    for repetition.  The ansi_cprng implements such a test, but it would be nice if
    the hw rng's did the same thing.  Obviously its not something thats always
    needed, but it seems like it would be a nice feature to have on occasion. I've
    written the below patch which allows individual entropy stores to be flagged as
    desiring a continuous test to be run on them as is extracted.  By default this
    option is off, but is enabled in the event that fips mode is selected during
    bootup.
    Signed-off-by: 's avatarNeil Horman <nhorman@tuxdriver.com>
    Acked-by: 's avatarMatt Mackall <mpm@selenic.com>
    Signed-off-by: 's avatarHerbert Xu <herbert@gondor.apana.org.au>
    5b739ef8
fips.h 128 Bytes