Re: [PATCH] add self-tests for rfc4309(ccm(aes))

2009-04-09 Thread Jarod Wilson
On Thursday 09 April 2009 14:52:04 Neil Horman wrote:
 On Thu, Apr 09, 2009 at 02:34:59PM -0400, Jarod Wilson wrote:
  Patch is against current cryptodev-2.6 tree, successfully tested via
  'modprobe tcrypt type=45'. The number of test vectors might be a bit
  excessive, but I tried to hit a wide range of combinations of varying
  key sizes, associate data lengths, input lengths and pass/fail.
  
  Signed-off-by: Jarod Wilson ja...@redhat.com
  
   
 snip
 
  +/*
  + * rfc4309 says section 8 contains test vectors, only, it doesn't, and NIST
  + * Special Publication 800-38C's test vectors use nonce lengths our rfc4309
  + * implementation doesn't support. The following are taken from fips cavs
  + * fax files on hand at Red Hat.
  + *
  + * nb: actual key lengths are (klen - 3), the last 3 bytes are actually
  + * part of the nonce which combine w/the iv, but need to be input this way.
  + */
 
 RFC4309 section 8 actually says the test vectors you can use are here:
 http://www.ietf.org/rfc/rfc3610.txt
 in RFC3610 section 8.

Oh, I'm dense, didn't correctly parse that 4309 was referring back to 3610
for the actual test vectors. I'll see what I can do with those...

 I don't think theres anything wrong with the vectors
 your're using below, but you may want to add the vectors from 3610 just to
 imrpove the testing.

I think I'd drop some of the ones in the initial patch in favor of adding
some from 3610, rather than simply adding more. The coverage is already
pretty good, increasing the number of vectors shouldn't really be necessary,
but it would definitely be nice to have vectors that are already publicly
published and verified.

-- 
Jarod Wilson
ja...@redhat.com
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Re: [PATCH] add self-tests for rfc4309(ccm(aes))

2009-04-09 Thread Neil Horman
On Thu, Apr 09, 2009 at 03:16:53PM -0400, Jarod Wilson wrote:
 On Thursday 09 April 2009 14:52:04 Neil Horman wrote:
  On Thu, Apr 09, 2009 at 02:34:59PM -0400, Jarod Wilson wrote:
   Patch is against current cryptodev-2.6 tree, successfully tested via
   'modprobe tcrypt type=45'. The number of test vectors might be a bit
   excessive, but I tried to hit a wide range of combinations of varying
   key sizes, associate data lengths, input lengths and pass/fail.
   
   Signed-off-by: Jarod Wilson ja...@redhat.com
   

  snip
  
   +/*
   + * rfc4309 says section 8 contains test vectors, only, it doesn't, and 
   NIST
   + * Special Publication 800-38C's test vectors use nonce lengths our 
   rfc4309
   + * implementation doesn't support. The following are taken from fips cavs
   + * fax files on hand at Red Hat.
   + *
   + * nb: actual key lengths are (klen - 3), the last 3 bytes are actually
   + * part of the nonce which combine w/the iv, but need to be input this 
   way.
   + */
  
  RFC4309 section 8 actually says the test vectors you can use are here:
  http://www.ietf.org/rfc/rfc3610.txt
  in RFC3610 section 8.
 
 Oh, I'm dense, didn't correctly parse that 4309 was referring back to 3610
 for the actual test vectors. I'll see what I can do with those...
 
Its easy to miss.  It referrs to the RFC in an endnote by reference.

  I don't think theres anything wrong with the vectors
  your're using below, but you may want to add the vectors from 3610 just to
  imrpove the testing.
 
 I think I'd drop some of the ones in the initial patch in favor of adding
 some from 3610, rather than simply adding more. The coverage is already
 pretty good, increasing the number of vectors shouldn't really be necessary,
 but it would definitely be nice to have vectors that are already publicly
 published and verified.
 
ACK to that.

 
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