Re: [tor-dev] Implications of switching to a single guard node: some conclusions

2014-03-26 Thread Nicholas Hopper
On Tue, Mar 25, 2014 at 3:41 PM, Mike Perry wrote: > For control, it would be nice to know what we would be giving up if we > used that same T=2000 cutoff with three guards and compare that to > T=2000 with just one guard. Is it easy for you to rerun just that > comparison (since you seem to be su

Re: [tor-dev] [RFC] Proposal draft: The move to a single guard node

2014-03-26 Thread Roger Dingledine
On Wed, Mar 26, 2014 at 11:57:08AM -0500, Nicholas Hopper wrote: > >We can try to mitigate this phenomenon by giving higher priority to > >young guards to be picked as guards: > > I'm pretty sure this section has it backwards from what was the intent > of the discussion of "guard age" at t

Re: [tor-dev] Using the HS protocol for unlinkability only

2014-03-26 Thread Ximin Luo
On 26/03/14 16:54, Michael Rogers wrote: > Hi all, > > (Please let me know if this belongs on tor-talk instead of here.) > > I'm working on a messaging app that uses Tor hidden services to > provide unlinkability (from the point of view of a network observer) > between users and their contacts. U

[tor-dev] Using the HS protocol for unlinkability only

2014-03-26 Thread Michael Rogers
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Hi all, (Please let me know if this belongs on tor-talk instead of here.) I'm working on a messaging app that uses Tor hidden services to provide unlinkability (from the point of view of a network observer) between users and their contacts. Users k

Re: [tor-dev] [RFC] Proposal draft: The move to a single guard node

2014-03-26 Thread Nicholas Hopper
I think I'll have more to say later, but... On Wed, Mar 26, 2014 at 11:36 AM, George Kadianakis wrote: > 1.3. Age of guard as a factor on guard probabilities > >By increasing the guard rotation period we also increase the lack >of clients for young guards since clients will rotate guards

[tor-dev] [RFC] Proposal draft: The move to a single guard node

2014-03-26 Thread George Kadianakis
I promised Nick I would have something for him by today's little-t-tor meeting. Here is a draft of the guard node security proposal. Definitely needs more work: Filename: xxx-single-guard-node.txt Title: The move to a single guard node Author: George Kadianakis Created: 2014-03-22 Status: Draft a

Re: [tor-dev] Implications of switching to a single guard node: some conclusions

2014-03-26 Thread George Kadianakis
Roger Dingledine writes: > On Thu, Mar 13, 2014 at 10:21:38PM +, George Kadianakis wrote: >> From {2}, we see that the Tor network has 6000MiB/s advertised guard >> bandwidth (orange line), but supposedly is only using the 3500MiB/s >> (yellow line). This means, that supposedly we are only us