Re: RNG using AES CTR as encryption algorithm

2009-09-14 Thread Damien Miller
On Wed, 9 Sep 2009, Peter Gutmann wrote: I was just going to reply with a variation of this, if you're implementing a full protocol that uses AES-CTR (or any algorithm/mode for that matter), find other implementations that do it too and make sure that you can talk to them. In theory everyone

Re: RNG using AES CTR as encryption algorithm

2009-09-14 Thread Peter Gutmann
Damien Miller d...@mindrot.org writes: The seems unlikely, since we don't use OpenSSL for AES-CTR in OpenSSH. I don't think OpenSSL even supports a CTR mode through its EVP API. I first saw it reported on the Putty bugs list [0], a good place to track interop problems with implementations since

Re: RNG using AES CTR as encryption algorithm

2009-09-14 Thread Damien Miller
On Mon, 14 Sep 2009, Peter Gutmann wrote: Damien Miller d...@mindrot.org writes: The seems unlikely, since we don't use OpenSSL for AES-CTR in OpenSSH. I don't think OpenSSL even supports a CTR mode through its EVP API. I first saw it reported on the Putty bugs list [0], a good place to

Re: RNG using AES CTR as encryption algorithm

2009-09-09 Thread Peter Gutmann
David Johnston d...@deadhat.com writes: Convincing yourself that you have implemented AES-CTR correctly usually involves first checking that your AES-ECB is correct, then putting the output of you counter construction into some other known good AES-CTR implementation and comparing the results

Re: RNG using AES CTR as encryption algorithm

2009-09-09 Thread Matt Ball
On Tue, Sep 1, 2009 at 11:28 PM, priya yelgar wrote: I have implemented RNG using AES algorithm in CTR mode. To test my implementation I needed some test vectors. How ever I searched on the CSRC site, but found the test vectors for AES_CBC not for AES CTR. Please  can any one tell me

Re: RNG using AES CTR as encryption algorithm

2009-09-09 Thread Zooko Wilcox-O'Hearn
And while you are at it, please implement these test vectors and report to Niels Ferguson: http://blogs.msdn.com/si_team/archive/2006/05/19/aes-test-vectors.aspx Regards, Zooko - The Cryptography Mailing List Unsubscribe by

Re: RNG using AES CTR as encryption algorithm

2009-09-08 Thread Jack Lloyd
On Wed, Sep 02, 2009 at 10:58:03AM +0530, priya yelgar wrote: Hi all, I have implemented RNG using AES algorithm in CTR mode. To test my implementation I needed some test vectors. How ever I searched on the CSRC site, but found the test vectors for AES_CBC not for AES CTR. Please?

Re: RNG using AES CTR as encryption algorithm

2009-09-08 Thread David Johnston
NIST doesn't provide specific KAT vectors for AES-CTR because the results depend on your specific counter construction. When you interact with a FIPS test lab, you will provide them with your counter construction, they will provide you with the KATs and you will then test to those KATs. This

RNG using AES CTR as encryption algorithm

2009-09-04 Thread priya yelgar
Hi all, I have implemented RNG using AES algorithm in CTR mode. To test my implementation I needed some test vectors. How ever I searched on the CSRC site, but found the test vectors for AES_CBC not for AES CTR. Please  can any one tell me where to look for the test vectors to test RNG using