Re: [tor-dev] Tor with collective signatures

2016-06-16 Thread Nicolas Gailly
we will be happy to talk with some of you there also. <---> Filename: tor_cosi.txt Title: Tor Cosi Author: Nicolas GAILLY, DeDiS lab, EPFL Created: 09.03.2016 Status: draft Version: 0.4 0. Introduction This document describes how to provide and use a decen

Re: [tor-dev] Tor with collective signatures

2016-05-26 Thread Nicolas Gailly
On 05/26/2016 03:47 PM, Tim Wilson-Brown - teor wrote: > > This is not possible, each authority only produces one consensus per hour. > If a majority of authorities sign the same consensus, that consensus will be > served by all authorities, and accepted by clients. > Otherwise, there is a consen

Re: [tor-dev] Tor with collective signatures

2016-05-26 Thread Nicolas Gailly
rmat - 5.3 Bandwidth section - 4.1 Changed cons - 6 Moved Integration to Compatibility < BEGIN > Title: Tor Cosi Author: Nicolas GAILLY, DeDiS lab, EPFL Created: 09.03.2016 Status: draft Version: 0.3 0. Introduction This document describes how to provide and use

[tor-dev] Tor with collective signatures

2016-05-06 Thread Nicolas Gailly
Hi, First, thanks a lot both of you for your in-depth comments, I know it takes time, but they've been very helpful! Then I mean to ask you about what you said regarding the fallback directory keys. So keys are not embedded but only hashes, OK. As you pointed out, CoSi would need to download ful

Re: [tor-dev] Proposal: Tor with collective signatures

2016-05-03 Thread Nicolas Gailly
A quick response: it also decreases the incentive to launch such an attack because the threshold of witnesses that are required to sign the document for the signature to be accepted can be locally set on each client. >>> This does; however, give a pretty straightfo

Re: [tor-dev] Proposal: Tor with collective signatures

2016-04-30 Thread Nicolas Gailly
On 04/29/2016 05:13 PM, Tom Ritter wrote: >> The mechanism is similar for >> witnesses that went offline. The parent of an offline witness will >> set the bit >> in the bitmap of the failed witness. > You mention this in Cons as well - it seems like the parents in the > tree need to be more

[tor-dev] Proposal: Tor with collective signatures

2016-04-25 Thread Nicolas Gailly
.2: Format -- Filename: tor_cosi.txt Title: Tor Cosi Author: Nicolas GAILLY, DeDiS lab, EPFL Created: 09.03.2016 Status: draft Version: 0.2 0. Introduction This document describes how to provide and use a decentralized witness

[tor-dev] Proposal: Tor with collective signatures

2016-04-14 Thread Nicolas Gailly
will find it interesting and welcome all the feedbacks / opinions you can have! Thanks in advance, Nicolas < tor_cosi.txt ---> Filename: tor_cosi.txt Title: Tor CoSi Author: Nicolas GAILLY Created: 09.03.2016 Status: draft 0. Introduction This document descr