On Sun, Jun 01, 2008 at 03:44:23AM +0200, Adrian-Ken Rueegsegger wrote: > Neil Horman wrote: > > On Sat, May 31, 2008 at 08:46:22AM +1000, Herbert Xu wrote: > >> On Fri, May 30, 2008 at 07:26:38PM +0200, Adrian-Ken Rüegsegger wrote: > >>> I was wondering why you created your own test vectors. Wouldn't standardized test vectors by NIST or ANSI be preferable? > >> If you could post a patch with those that would be very much > >> appreciated. Thanks! > > I am putting together a patch using the test vectors found at [3] and the ones I gathered from ANSI X9.52 and ISO/IEC FDIS 10116:2005. Strange enough the ANSI and ISO test vectors pass while the ones from NIST do not yield the expected results. I have not yet identified the specific differences between the various test vector sets. It is not clearly stated if/which padding was employed so that might be the reason... > I thought that TDES input/output vectors had to be an even multiple of the key length. As such if the vectors aren't an even multiple, doesn't padding have to be employed? > > For future reference, do you have a link where NIST standard test vectors can be > > obtained? > > A good place to start is [1]. More specifically for TDES: [2] and [3]. Note that the tests described in [2] will not work with the current DES3 implementation since the employed keys will be identified as weak keys and the setkey operation would fail. > > By the way: when explicitly trying to set a weak key for DES3 I got the following warning: > > setkey() failed flags=0 > > Shouldn't the flags be set to CRYPTO_TFM_RES_BAD_KEY_SCHED at that point (see crypto/des_generic.c, line 873)? I ran into this too when I wrote my vector. I'm not sure why this is happening, as it appears the *flags->crt_flags | FLAGS statements should set these. I'm looking into why Neil > > Thanks, > Adrian > __________ > > [1] - http://csrc.nist.gov/groups/STM/cavp/standards.html > [2] - http://csrc.nist.gov/publications/nistpubs/800-20/800-20.pdf > [3] - http://csrc.nist.gov/groups/STM/cavp/documents/des/tripledes-vectors.zip -- 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
