Re: Warning! New cryptographic modes!

2009-05-22 Thread james hughes
I believe that mode has been renamed EME2 because people were having a fit over the *. On May 14, 2009, at 12:37 AM, Jon Callas wrote: I'd use a tweakable mode like EME-star (also EME*) that is designed for something like this. It would also work with 512-byte blocks.

End-of-chapter questions for Practical Cryptography?

2009-05-22 Thread Paul Hoffman
Greetings again. I'm helping someone new to the field learn cryptography. He's a book-learner, and is starting with Ferguson Schneier Practical Cryptography. I would love to give him some things to think about after each chapter to make sure he's thinking about the big picture. Has anyone on

security fail (from failblog)

2009-05-22 Thread mhey...@gmail.com
See http://failblog.org/2009/05/22/security-fail-5. -Michael Heyman - The Cryptography Mailing List Unsubscribe by sending unsubscribe cryptography to majord...@metzdowd.com

Re: End-of-chapter questions for Practical Cryptography?

2009-05-22 Thread Perry E. Metzger
Paul Hoffman paul.hoff...@vpnc.org writes: Greetings again. I'm helping someone new to the field learn cryptography. He's a book-learner, and is starting with Ferguson Schneier Practical Cryptography. I would love to give him some things to think about after each chapter to make sure he's

Distinguisher and Related-Key Attack on the Full AES-256

2009-05-22 Thread Jack Lloyd
Alex Biryukov, Dmitry Khovratovich, and Ivica Nikolic gave a talk at the Eurocrypt rump session, 'Distinguisher and Related-Key Attack on the Full AES-256', with the full paper accepted to Crypto. Slides from Eurocrypt are here:

Re: End-of-chapter questions for Practical Cryptography?

2009-05-22 Thread Jonathan Katz
On Fri, 22 May 2009, Perry E. Metzger wrote: The field really needs a new, thorough textbook suitable for a one year course, or maybe an up to date one semester intro text and an up to date one semester textbook on modern cryptanalysis. Let me humbly suggest my own book: Introduction to

Re: Warning! New cryptographic modes!

2009-05-22 Thread Zooko Wilcox-O'Hearn
For what it is worth, in the Tahoe-LAFS project [1] we simply use CTR mode and a unique key for each file. Details: [2] Tahoe-LAFS itself doesn't do any deltas, compression, etc., but there are two projects layered atop Tahoe to add such features -- a plugin for duplicity [3] and a new