[tahoe-dev] [tahoe-lafs] #217: DSA-based mutable files -- small URLs, fast file creation

tahoe-lafs trac at allmydata.org
Wed Jan 6 21:13:34 UTC 2010

#217: DSA-based mutable files -- small URLs, fast file creation
 Reporter:  zooko                   |           Owner:  zooko     
     Type:  enhancement             |          Status:  assigned  
 Priority:  major                   |       Milestone:  eventually
Component:  code-mutable            |         Version:  0.7.0     
 Keywords:  mutable crypto newcaps  |   Launchpad_bug:            

Comment(by warner):

 Zooko: interesting! A spam filter that keys off the length of URL! I
 if the assumption is that it takes a human being to come up with short
 and that robots are only capable of coming up with long random ones? That
 seems to be the thinking behind some other comments you've transcribed,
 humans saying they distrust the tahoe URLs because they "smell spammy".

 David-Sarah: I was mainly thinking of speed: ECDSA (and other schemes for
 which key generation does not involve the creation of new prime numbers)
 be way faster than our current RSA approach. I'm also assuming that we'll
 up using the simplest approaches we've discussed so far, which mostly
 ECDSA (with or without semi-private keys). There are schemes we can use
 reduce cap length without improving generation speed, but I'd rather make
 incompatible change for two simultaneous benefits than make two separate
 incompatible changes for one benefit each. (but I'll take this as
 to review and comment upon the latest Elk Point designs you've done, and I
 look forward to hearing more about its successor).

 Also, I've been hounding Zooko (usually offline) to finish ECDSA for
 since there are lots of other projects that have been waiting on it. So
 take any opportunity to encourage him that I can get :).

Ticket URL: <http://allmydata.org/trac/tahoe/ticket/217#comment:62>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid

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