Re: Why the poor uptake of encrypted email?

2008-12-09 Thread ji

Alec Muffett wrote:



Naq bs pbhefr lbh unir gb nepuvir pbcvrf bs gur ybofgre, abg gur fbhc.


If we still had finger-plans, this would have made its way into mine. 
What a great quote!


/ji

PS: For the rot13-impaired, it reads "And of course you have to archive 
copies of the lobster, not the soup."


-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]


Re: Dutch Transport Card Broken

2008-01-25 Thread ji
The per-card cost need not be such a big problem.  Singapore has a 
proximity-card-based system.  They use the same card both for the 
long-term cards and for the single-use cards.  There is a S$ 2 (IIRC) 
deposit on the card, which is refunded after the card is used.  Waste 
not want not!


/ji

-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]


Re: DRM for batteries

2008-01-04 Thread ji
Inkjet cartidges and laserprinter cartridges already have this kind of 
functionality.  Rumor has had it for a long time that Dell has been 
doing this with their batteries.


In any case, the strength of the crypto is irrelevant.  What's relevant 
is the strength of the lawyers arguing that clone makers are violating 
the DMCA.


/ji

-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]


Re: Intercepting Microsoft wireless keyboard communications

2007-12-11 Thread ji
How many bits (not just data, also preamble/postamble, sync bits, etc.) 
is the keyboard sending for each keystroke anyway?


Cheers,

/ji

-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]


Re: Trillian Secure IM

2007-10-10 Thread ji

[EMAIL PROTECTED] wrote:


Why bother with all this? There is OTP for gaim, and it works just fine 
(not to mention it comes from a definitely clueful source).


/ji



I meant, of course, OTR (off-the-record).  And to think that I was using 
it in another window as I was typing this!


Thanks to Scott G. Kelly for pointing this out.

/ji

-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]


Re: Trillian Secure IM

2007-10-10 Thread ji


Why bother with all this? There is OTP for gaim, and it works just fine 
(not to mention it comes from a definitely clueful source).


/ji

-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]


Re: Seagate announces hardware FDE for laptop and desktop machines

2007-09-10 Thread ji

Dave Korn wrote:

On 07 September 2007 21:28, Leichter, Jerry wrote:


Grow up.  *If* the drive vendor keeps the mechanism secret, you have
cause for complaint.  But can you name a drive vendor who's done
anything like that in years?  


  All DVD drive manufacturers.  That's why nobody could write a driver for
Linux until CSS was cracked, remember?



It wasn't the mechanism that was secret so much as the key.  CSS was 
supposed to protect someone else's data.  You wouldn't give the key to 
*your* drive away, would you?


/ji

-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]


Re: Seagate announces hardware FDE for laptop and desktop machines

2007-09-07 Thread ji

Ivan Krsti? wrote:

On Sep 6, 2007, at 6:14 PM, Jacob Appelbaum wrote:


other known good implementations of AES128 (CBC? I'm not
sure...).


Plain AES-CBC is not a great choice for FDE. You can do whatever you'd 
like to the bits of a given block at the cost of garbling the previous 
block, which makes binaries a plausible target. Given the size of modern 
OSes, it might even be an easy one.




That's not the threat model; the main use of FDE is to protect the data 
in a lost/stolen laptop.


FWIW, a couple of days ago I got yet another of those letters where a 
former employer is informing me that they lost my personal data; this 
time it was AT&T telling me that a laptop with employee benefits on it 
got stolen.


/ji

-
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]