Watermarking...

2010-04-20 Thread Massimiliano Pala
Hi all, I was wondering if any of you have some pointers on the security of watermarking. In particular I am interested in public-key or asymmetric watermarking algorithms. Also, do you know of any free-to-use (opensource/etc.) implementation that can be used for research-test purposes ? --

Re: Watermarking...

2010-04-20 Thread Alfonso De Gregorio
On Tue, Apr 20, 2010 at 12:29 AM, Massimiliano Pala p...@cs.dartmouth.edu wrote: Hi all, I was wondering if any of you have some pointers on the security of watermarking. In particular I am interested in public-key or asymmetric watermarking algorithms. Ciao Massimiliano, You might be

New protocol for cryptographically strong, accountable anonymous messaging

2010-04-20 Thread Bryan Ford
A student and I here at Yale have recently been developing an experimental protocol for cryptographically strong anonymous messaging within a small online group or virtual organization. We believe the protocol is (provably) resistant to both traffic analysis and anonymous denial-of-service or

Quantum Key Distribution: the bad idea that won't die...

2010-04-20 Thread Perry E. Metzger
Via /., I saw the following article on ever higher speed QKD: http://www.wired.co.uk/news/archive/2010-04/19/super-secure-data-encryption-gets-faster.aspx Very interesting physics, but quite useless in the real world. I wonder why it is that, in spite of almost universal disinterest in the

Re: Watermarking...

2010-04-20 Thread Massimiliano Pala
[Moderator's note: Please no top posting. --Perry] Hello Sandy, all, basically what I need is a library that will allow me to check for a watermark into an image/video/etc. It could be different algorithms for different media type - my work is not related to the algorithms themselves. The

Re: Quantum Key Distribution: the bad idea that won't die...

2010-04-20 Thread Paul Hoffman
At 11:31 AM -0400 4/20/10, Perry E. Metzger wrote: I wonder why it is that, in spite of almost universal disinterest in the security community, quantum key distribution continues to be a subject of active technological development. You hit it: almost. As long as a few researchers are interested,

Re: What's the state of the art in factorization?

2010-04-20 Thread Samuel Neves
The state of the art in factorization is the same as for, e.g., the factorization of RSA-768 [1] --- there haven't been many advances in the number field sieve algorithm itself. The current effort, as Bernstein puts it, is in speeding up smoothness detection, as part of the relation collection

Re: Watermarking...

2010-04-20 Thread Dirk-Willem van Gulik
On 19 Apr 2010, at 23:29, Massimiliano Pala wrote: Hi all, I was wondering if any of you have some pointers on the security of watermarking. In particular I am interested in public-key or asymmetric watermarking algorithms. Also, do you know of any free-to-use (opensource/etc.)

Re: What's the state of the art in factorization?

2010-04-20 Thread Thierry Moreau
Perry E. Metzger wrote: I was alerted to some slides from a talk that Dan Bernstein gave a few days ago at the University of Montreal on what tools will be needed to factor 1024 bit numbers: http://cr.yp.to/talks/2010.04.16/slides.pdf I had the opportunity to listen to Prof. Dan Bernstein