On Thu, Nov 13, 2008 at 01:44:31PM -0500, Neil Horman wrote: > On Thu, Nov 13, 2008 at 11:36:11AM -0500, Jarod Wilson wrote: > > The ANSI X9.31 PRNG docs aren't particularly clear on how to increment DT, > > but empirical testing shows we're incrementing from the wrong end. A 10,000 > > iteration Monte Carlo RNG test currently winds up not getting the expected > > result. > > > > From http://csrc.nist.gov/groups/STM/cavp/documents/rng/RNGVS.pdf : > > > > # CAVS 4.3 > > # ANSI931 MCT > > [X9.31] > > [AES 128-Key] > > > > COUNT = 0 > > Key = 9f5b51200bf334b5d82be8c37255c848 > > DT = 6376bbe52902ba3b67c925fa701f11ac > > V = 572c8e76872647977e74fbddc49501d1 > > R = 48e9bd0d06ee18fbe45790d5c3fc9b73 > > > > Currently, we get 0dd08496c4f7178bfa70a2161a79459a after 10000 loops. > > > > Inverting the DT increment routine results in us obtaining the expected result > > of 48e9bd0d06ee18fbe45790d5c3fc9b73. Verified on both x86_64 and ppc64. > > > > Signed-off-by: Jarod Wilson <jarod@xxxxxxxxxx> Patch applied. Thanks! -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
