Re: presentations about encrypted storage

2008-03-30 Thread Ivan Krstić
On Mar 28, 2008, at 5:48 PM, [EMAIL PROTECTED] wrote: I've got two presentations I've given on encrypted storage technologies On a similar note, list readers might enjoy the detailed writeup of Tahoe, the secure distributed erasure-coded filesystem built by Zooko and the folks at

Re: [p2p-hackers] convergent encryption reconsidered

2008-03-30 Thread Ivan Krstić
On Mar 20, 2008, at 3:42 PM, zooko wrote: They extended the confirmation-of-a-file attack into the learn-partial-information attack. In this new attack, the attacker learns some information from the file. This is done by trying possible values for unknown parts of a file and then

Re: [p2p-hackers] convergent encryption reconsidered

2008-03-30 Thread Leichter, Jerry
| They extended the confirmation-of-a-file attack into the | learn-partial-information attack. In this new attack, the | attacker learns some information from the file. This is done by | trying possible values for unknown parts of a file and then | checking whether the result

Hagelin cipher machine for sale on Ebay

2008-03-30 Thread Steven M. Bellovin
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemih=005viewitem=item=150231089624rd=1 --Steve Bellovin, http://www.cs.columbia.edu/~smb - The Cryptography Mailing List Unsubscribe by sending unsubscribe cryptography

Re: [p2p-hackers] convergent encryption reconsidered

2008-03-30 Thread Ivan Krstić
On Mar 30, 2008, at 3:12 PM, Leichter, Jerry wrote: How would that help? Unless I'm misunderstanding Zooko's writeup, he's worried about an attacker going from a partially-known plaintext (e.g. a form bank letter) to a completely-known plaintext by repeating the following process: 1.