why q|(p-1) in DLP protocols

1999-12-14 Thread Arrianto Mukti Wibowo
Hi professors... I'm a student studying cryptography and e-cash. I've been wondering, why many cryptographic protocols based on discrete log problem such as Schnorr, Brand's e-cash, Chaum Pedersen's DLP blind signature, etc, we must choose a prime q p where q divides (p-1)? q is the

Encryption Rules Change Delayed.

1999-12-14 Thread Martin Minow
In its Tuesday edition, the New York Times reports that the new encryption rules will not be released this week, as originally planned. http://www.nytimes.com/library/tech/99/12/cyber/capital/14capital.html "The delay gives officials another month to address the widespread criticism that

Re: sci fi (was Re: Onhand, clapping? (was Re: NTK now, 1999-12-10))

1999-12-14 Thread Bill Stewart
At 12:25 PM 12/13/1999 -0800, David Honig wrote: Has anyone extrapolated from the fact that the more you carry a device with you, the less physically subvertible it is? Your home machine may be more robust against that attack than your office machine, e.g., if some friendly or yourself occupies

Re: Ten Risks of PKI

1999-12-14 Thread Jaap-Henk Hoepman
On 13 Dec 1999 18:40:02 - lcs Mixmaster Remailer [EMAIL PROTECTED] writes: While this is true, keep in mind that there is more to mounting a successful cryptographic attack than adding root keys and fake certificates. It is also necessary to intercept the messages which might

Re: PGP Granted Worldwide Export License

1999-12-14 Thread Vin McLellan
Unless I missed something big in D.C., I presume this is simply the announcement of a pro-forma bulk export license for PGP (and the repackaged PGP Enterprise Security Suite?) for Business. And, although it is difficult to discert amid all the self-congratulatory hoopla, I

Re: sci fi (was Re: Onhand, clapping? (was Re: NTK now, 1999-12-10))

1999-12-14 Thread David Honig
At 10:46 PM 12/13/99 -0800, Bill Stewart wrote: Yes and no. My laptop is much more likely to get stolen than my home PC (though less likely to get blackbagged.) If a laptop is stolen, the loss should be financial, not information leakage. But the issue here is subversion, not loss; as you

Siemens Card Hacked?

1999-12-14 Thread R. A. Hettinga
Fire at will, people... Cheers, RAH (Yes, you'd helping him write his story. For free. So, what else is new? :-)) --- begin forwarded text From: "Davis, Don" [EMAIL PROTECTED] To: "'[EMAIL PROTECTED]'" [EMAIL PROTECTED], "'[EMAIL PROTECTED]'" [EMAIL PROTECTED], "'[EMAIL PROTECTED]'"

Re: Debit card fraud in Canada

1999-12-14 Thread Eugene Leitl
Arrianto Mukti Wibowo writes: About Mondex, probably you are right. No information is available about the internals of Mondex, and is kept secret, unlike CAFE which the specification The fact that Mondex keeps its VM specs secret does not forebode well for its security. Apparently, the VM

RE: PGP Granted Worldwide Export License

1999-12-14 Thread Salzman, Noah
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello, I suppose I shouldn't get into a "ADK features are not Key Escrow" debate as I am sure everyone's opinions are already set in stone... However, I would like to address the perception (below) that the ADK feature has been "locked-open" as