Re: [tor-dev] Guard node security: ways forward (An update from the dev meeting)

2014-02-26 Thread George Kadianakis
Nicholas Hopper writes: > On Tue, Feb 25, 2014 at 5:04 PM, Nicholas Hopper wrote: >> Another thought: we also should investigate how various thresholds >> affect the relationship between the cumulative guard weight total and >> the total exit weight. > > Well, that turns out not to be a real iss

Re: [tor-dev] Guard node security: ways forward (An update from the dev meeting)

2014-02-27 Thread George Kadianakis
Tariq Elahi writes: > Hey George, > Glad to see that guard questions are still being asked. > Some thoughts from your plots. > > On 24-Feb-14 9:06 PM, George Kadianakis wrote: >> >> And because release-early-release-often, here is a graph: >> https://

[tor-dev] Pluggable transports meeting today (Friday 28th of February 2014)

2014-02-28 Thread George Kadianakis
Greetings humans, this is an email to remind you that the regular biweekly pluggable transports meeting is going to happen today. Place is the #tor-dev IRC channel in OFTC. Time is 17:00 UTC (it's in an hour!). Cheers! ___ tor-dev mailing list tor-dev

Re: [tor-dev] Interested in GSoC - Hidden Service Naming or Hidden Service Searching

2014-03-02 Thread George Kadianakis
Jeremy Rand writes: > Hi Tor developers, > > I'm interested in participating in GSoC. I'm an undergrad majoring in > computer science at University of Oklahoma, and I've been a major Tor > enthusiast for years. > > There are two possible projects which I'm considering; I'm looking for > some fee

[tor-dev] How to test Linux capabilities & pluggable transports

2014-03-02 Thread George Kadianakis
Hello David, the other day you asked for a quick way to test Linux capabilities and pluggable transports (to combine #7875 and #8195). What you probably want to do, is write a small script that prints the active Linux capabilities, spawn it as a pluggable transport, and check its output to see if

Re: [tor-dev] Interested in GSoC - Hidden Service Naming or Hidden Service Searching

2014-03-04 Thread George Kadianakis
Jeremy Rand writes: > Hi George, thanks for the reply. > > On 03/02/2014 06:27 AM, George Kadianakis wrote: >> I'd like to see human-readable names in HSes, but I'm not very >> familiar with Namecoin. I don't want to discourage you from working on >> t

Re: [tor-dev] Proposal 220 (revised): Migrate server identity keys to Ed25519

2014-03-04 Thread George Kadianakis
Nick Mathewson writes: > I've revised proposal 220 based on commentary from Roger. The biggest > changes is tweaking all of the things called "certificates" to make > them actually follow the same format to greatest the extent possible. > > To see diffs, you can use git, or browse the gitweb sit

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-05 Thread George Kadianakis
"Nurmi, Juha" writes: > Hi All, > Hello, > Ahmia.fi interested in participating in GSoC. > > Ahmia.fi's back-end is designed by Kordex (Mikko Kortelainen) and I (Juha > Nurmi) have built the front-end. > > In practise, I will apply as a student. Also, kordex might apply. > Be warned, that even

Re: [tor-dev] Guard node security: ways forward (An update from the dev meeting)

2014-03-05 Thread George Kadianakis
Nicholas Hopper writes: > On Tue, Feb 25, 2014 at 5:04 PM, Nicholas Hopper wrote: >> Another thought: we also should investigate how various thresholds >> affect the relationship between the cumulative guard weight total and >> the total exit weight. > > Well, that turns out not to be a real iss

Re: [tor-dev] Hidden service search engine (GSoC)

2014-03-08 Thread George Kadianakis
Rémi writes: > Hy, > > I am currently a master student with a focus on natural language > processing, machine learning, information retrieval and data mining. > > The Tor website lists a bunch of ideas, one of which is "Search Engine > for Hidden Services"[1]. This project suits me well given my

Re: [tor-dev] Guard node security: ways forward (An update from the dev meeting)

2014-03-08 Thread George Kadianakis
Tariq Elahi writes: > On 05-Mar-14 5:19 PM, George Kadianakis wrote: >> >> OK, let's get back to this. This subthread is blocking us from writing >> a proposal for this project, so we should resolve it soon. >> >> There is one very important performance fa

Re: [tor-dev] Combining obfsproxy+scramblesuit with OpenVPN

2014-03-11 Thread George Kadianakis
irregula...@riseup.net writes: > Hello people, > > I'm investigating how may we combine the traffic obfuscation provided by > obfsproxy+scramblesuit with OpenVPN instead of Tor. > > I completely understand how this combination does not provide anonymity, > but nevertheless I think it will be of so

Re: [tor-dev] GoSC - Website Fingerprinting project

2014-03-12 Thread George Kadianakis
Roger Dingledine writes: > On Mon, Mar 10, 2014 at 06:00:13PM +0100, Marc Juarez wrote: >> I'm a PhD student at COSIC (COmputer Security and Industrial >> Cryptography) in KU Leuven, Belgium. My research topic is related to >> network traffic analysis and I'm now focused in the more specific >> p

[tor-dev] Pluggable transports meeting tomorrow (Friday 14th of March 2014)

2014-03-13 Thread George Kadianakis
Greetings humans, this is an email to remind you that the regular biweekly pluggable transports meeting is going to happen tomorrow. Place is the #tor-dev IRC channel in OFTC. Time is 17:00 UTC. Cheers! ___ tor-dev mailing list tor-dev@lists.torproject.

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

2014-03-13 Thread George Kadianakis
tl;dr: analysis seems to indicate that switching to one guard node might not be catastrophic to the performance of Tor. To improve performance some increased guard bandwidth thresholds are proposed that seem to help without completely destroying the anonymity of the network. Enjoy the therapeutic q

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-16 Thread George Kadianakis
Juha Nurmi writes: >> And what would you like to do over the summer so that: a) Something >> useful and concrete comes out of only 3 months of work. b) Your >> work will also be useful after the summer ends. >> >> I would be interested to see some areas that you would like to work >> on over the

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-17 Thread George Kadianakis
"Nurmi, Juha" writes: > Hi, > > Thank you George, Fabio and Giovanni! :) > > I gathered these comments to the Google Docs: > https://docs.google.com/document/d/1XB42HM4uESYBAnoHHRuaqKMP64VFDI91Qa-CtIuye2E/edit?usp=sharing > > I have wrote a comment to the each comment. > > Furthermore, I modified

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-17 Thread George Kadianakis
Juha Nurmi writes: > On 17.03.2014 15:17, George Kadianakis wrote: >> But now that you don't have a "Search API" project, what are you >> going to do during the Globaleaks integration? > > The search API was supposed to be a query API to the ahmia's da

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-17 Thread George Kadianakis
Juha Nurmi writes: Also, are you sure that 1-3 workdays are sufficient to design & implement a banned domain synchronizer between tor2web and ahmia? >>> >>> Well, I cannot know that. Let's put one workweek for that. I am >>> hoping to spend a workday or two with Tor2web and we ge

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-17 Thread George Kadianakis
"Giovanni `evilaliv3` Pellerano" writes: > I do not see any paricular risk in exposing the hashed list. the > reason behind the hashed list is exactly that we want to allow > publishing without any risk to publish direct link to child porn > contents or other shit. anyhow i'm really interested in

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-17 Thread George Kadianakis
"Nurmi, Juha" writes: > Hi, > > Thank you George, Fabio and Giovanni! :) > > I gathered these comments to the Google Docs: > https://docs.google.com/document/d/1XB42HM4uESYBAnoHHRuaqKMP64VFDI91Qa-CtIuye2E/edit?usp=sharing > > I have wrote a comment to the each comment. > > Furthermore, I modified

Re: [tor-dev] Descriptor-id and responsible hidden service directorate. Changes in version 0.2.4.18-rc - 2013-11-16

2014-03-21 Thread George Kadianakis
Frank Young writes: > I have noticed that since the release of version 0.2.4.18-rc - 2013-11-16, > Attempts to fetch v2 rendezvous service descriptor are failing. > The issue seems to get worse as many people are updating their clients. > > The calculation of decriptor ids based on specification

Re: [tor-dev] GSoC - Search Engine for Hidden services

2014-03-24 Thread George Kadianakis
Replying to some new additions in the proposal: > Thanks asn! "Ask help from organizations that are crawling" Today I > emailed to duckduckgo and asked is there an easy way to search new > .onions using their search engine. "Checking out the backlinks from > public WWW" With known onion address it

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 +0000, 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 s

[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:

[tor-dev] Pluggable transports meeting tomorrow (Friday 28th of March 2014)

2014-03-27 Thread George Kadianakis
Greetings humans, this is an email to remind you that the regular biweekly pluggable transports meeting is going to happen tomorrow. Place is the #tor-dev IRC channel in OFTC. Time is 17:00 UTC. Cheers! ___ tor-dev mailing list tor-dev@lists.torproject.

[tor-dev] Requesting trac components for some PT projects

2014-03-28 Thread George Kadianakis
Hello people of the Trac, could you make us some Trac components for some PT projects? Specifically, it would be great if you could make us the following components: a) "meek" b) "FTE" c) "obfsclient" Thank you! ___ tor-dev mailing list tor-dev@lists.t

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

2014-04-07 Thread George Kadianakis
Nicholas Hopper writes: > 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

[tor-dev] Pluggable transports meeting today (Friday 11th of April 2014)

2014-04-11 Thread George Kadianakis
Greetings humans, this is an email to remind you that the regular biweekly pluggable transports meeting is going to happen today. Place is the #tor-dev IRC channel in OFTC. Time is 17:00 UTC. Cheers! ___ tor-dev mailing list tor-dev@lists.torproject.org

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

2014-04-11 Thread George Kadianakis
> On Mon, Apr 7, 2014 at 11:34 AM, George Kadianakis > So, based on your > response, IIUC, the idea is that because young > > guards are underutilized, we want to increase the probability of them > > being chosen in non-guard positions, so that they become more utilized >

Re: [tor-dev] ideas/xxx-pluggable-transports-through-proxy.txt

2014-04-11 Thread George Kadianakis
Yawning Angel writes: > Hello, > > The topic of routing pluggable transports through other proxys (SOCKS > and HTTP CONNECT) has come up a few times recent, both as bug reports > from users and as something that probably should be done to round out > the pluggable transport concept since they wil

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

2014-04-15 Thread George Kadianakis
Nicholas Hopper writes: > On Fri, Apr 11, 2014 at 7:45 AM, George Kadianakis > wrote: >> I see. That makes sense, I think. > > Good. > >> I will ponder on this a bit more, and then edit the proposal. > > When/if you become convinced, let me know if you want m

Re: [tor-dev] Improving the structure of indirect-connection PTs (meek/flashproxy)

2014-04-16 Thread George Kadianakis
Ximin Luo writes: > ## Background > > Pluggable Transports are proxy programs that help users bypass censorship. > > [App client] -> XXX EVIL CENSOR HAS YOU XXX ACCESS DENIED XXX > [App client] -> [PT client] -> (the cloud!) -> [PT server] -> [App server] > > The structural design, on the client

Re: [tor-dev] GSoC: Ahmia.fi - Search Engine for Hidden Services

2014-04-22 Thread George Kadianakis
Juha Nurmi writes: > Hi, > > I'm a student who is starting to work with ahmia.fi search engine as a > part of Google Summer of Code. :) > > The proposal is online here https://ahmia.fi/gsoc/ > > In practise, I have now time and funding to develop my search engine. > George is my primary mentor an

[tor-dev] Pluggable transports meeting tomorrow (Time changed!) (16:00 UTC Friday 24th of April 2014)

2014-04-24 Thread George Kadianakis
Hello friends, just wanted to remind you that the regular biewekly pluggable transports meeting is going to occur tomorrow at 16:00 UTC. Place is the #tor-dev IRC channel in OFTC. Please note that we *changed* the time from 17:00 to 16:00 UTC. Thanks!

Re: [tor-dev] GSoC: Ahmia.fi - Search Engine for Hidden Services

2014-04-25 Thread George Kadianakis
Juha Nurmi writes: > On 22.04.2014 17:35, George Kadianakis wrote: >> Enjoy GSoC :) > > I will :) > >> BTW, looking again at your proposal, I see that you are going to >> do both popularity tracking and backlinks. > > Yes, another crawler gathers backlinks fr

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

2014-04-26 Thread George Kadianakis
Nicholas Hopper writes: > On Tue, Apr 15, 2014 at 6:35 AM, George Kadianakis > wrote: >> A patch for the proposal would be useful. If you don't have time to do >> it, just tell me and I will do it myself. > > Here's a patch: > https://www-users.cs.um

Re: [tor-dev] Version bump of obfsproxy to 0.2.8 in TB breaks FTE

2014-04-28 Thread George Kadianakis
Kevin P Dyer writes: > Hi Mike, > > It looks like [1] broke FTE [2]. > > Can you hold off on pushing any releases public, until we resolve #11629? > > George - Can we revert obfsproxy back to 0.2.4, to give me time to sort > this out? > Sure, that seems reasonable for now. Could you ensure that

Re: [tor-dev] Hidden Service Scaling

2014-05-03 Thread George Kadianakis
Christopher Baines writes: > On 08/10/13 06:52, Christopher Baines wrote: >> I have been looking at doing some work on Tor as part of my degree, and >> more specifically, looking at Hidden Services. One of the issues where I >> believe I might be able to make some progress, is the Hidden Service

[tor-dev] Pluggable transports meeting tomorrow (Friday 9th of May 2014)

2014-05-08 Thread George Kadianakis
Hello friends, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur tomorrow at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Please note that we recently *changed* the time from 17:00 to 16:00 UTC. Thanks! ___

[tor-dev] Introduction Points and their rotation periods (was Re: Hidden Service Scaling)

2014-05-10 Thread George Kadianakis
waldo writes: > El 02/05/14 02:34, Christopher Baines escribió: >> On 02/05/14 00:45, waldo wrote: >>> El 30/04/14 17:06, Christopher Baines escribió: On 08/10/13 06:52, Christopher Baines wrote: > I have been looking at doing some work on Tor as part of my degree, and > more specifi

Re: [tor-dev] Introduction Points and their rotation periods (was Re: Hidden Service Scaling)

2014-05-11 Thread George Kadianakis
Michael Rogers writes: > On 10/05/14 21:09, George Kadianakis wrote: >> It's interesting that you say this, because we pretty much took >> the opposite approach with guard nodes. That is, the plan is to >> extend their rotation period to 9 months (from the current 2-3

[tor-dev] Pluggable transports meeting today (Friday 23rd of May 2014)

2014-05-23 Thread George Kadianakis
Hello friends, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur today at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Please note that we recently *changed* the time from 17:00 to 16:00 UTC. Thanks! __

Re: [tor-dev] wfpadtools: comments about primitives

2014-05-30 Thread George Kadianakis
Marc Juarez writes: > Hi all, > > I am a GSoC student working in a new PT for the development of future > Website Fingerprinting countermeasures in Tor. > > The PT is not targeting any specific defense, but to link padding > defenses in general. The idea is to implement a set of primitives that >

[tor-dev] obfs4 and ntor (question wrt node_id)

2014-05-31 Thread George Kadianakis
Hello Ian, hope you are well :) I have a question wrt a new PT and ntor. Yawning Angel has been developing a new PT called obfs4 (temp name), which is basically scramblesuit using ntor and elligator2. This results in better performance than UniformDH. You can find the spec of obfs4 here: https:

Re: [tor-dev] obfs4 and ntor (question wrt node_id)

2014-06-02 Thread George Kadianakis
Ian Goldberg writes: > On Sat, May 31, 2014 at 05:51:16PM +0100, George Kadianakis wrote: >> Hello Ian, >> >> hope you are well :) >> >> I have a question wrt a new PT and ntor. >> >> Yawning Angel has been developing a new PT called obfs4 (temp na

Re: [tor-dev] Proposal 236, Single-guard designs, and directory guards

2014-06-05 Thread George Kadianakis
Nick Mathewson writes: > Hi, all! > > I noticed that proposal 236 doesn't mention directory guards. (See > proposal 207, implemented in Tor 0.2.4.) I think that we should > consider retaining multiple directory guards while going to a single > guard for multi-hop circuits. > > My rationale here

[tor-dev] Pluggable transports meeting today (Friday 6th of June 2014)

2014-06-06 Thread George Kadianakis
Hello friends, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur today at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Please note that we recently *changed* the time from 17:00 to 16:00 UTC. Thanks! __

Re: [tor-dev] Proposal 236, Single-guard designs, and directory guards

2014-06-06 Thread George Kadianakis
Nicholas Hopper writes: > On Mon, May 5, 2014 at 12:07 PM, Nick Mathewson wrote: >> I noticed that proposal 236 doesn't mention directory guards. (See >> proposal 207, implemented in Tor 0.2.4.) I think that we should >> consider retaining multiple directory guards while going to a single >> gu

[tor-dev] Pluggable transports meeting today (16:00UTC Friday 20th of June 2014)

2014-06-19 Thread George Kadianakis
Hello friends, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur today at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Thanks! ___ tor-dev mailing list tor-dev@lists.torproject.org ht

[tor-dev] Journey to the core of Tor: Why does Roger has so many guards?

2014-06-23 Thread George Kadianakis
During our meeting in Iceland, we talked a lot about guard nodes. Some of that discussion eventually turned into proposal 236 [0]. During our discussions, we looked into the state file of Roger, and we noticed that there are 50 or so guard nodes in there. And that made us wonder: "Why does Roger h

[tor-dev] (Extra) roadmapping PT meeting this Friday (16:00UTC 11th of July 2014)

2014-07-08 Thread George Kadianakis
Hello friends, the PT meeting last week was a bit quiet because it was conflicting with the Tor dev meeting. To compensate for that, we are thinking of throwing an extra PT meeting this Friday. The agenda can be modified according to the participants, but we are planning to spend some time writin

[tor-dev] Defending against guard discovery attacks by pinning middle nodes

2014-07-11 Thread George Kadianakis
Hey Nick, this mail is about the schemes we were discussing during the dev meeting on how to protect HSes against guard discovery attacks (#9001). I think we have some ideas on how to offer better protection against such attacks, mainly by keeping our middle nodes more static than we do currently

Re: [tor-dev] Defending against guard discovery attacks by pinning middle nodes

2014-07-11 Thread George Kadianakis
"Sebastian G. " writes: > 11.07.2014 14:31, Ian Goldberg: >> On Fri, Jul 11, 2014 at 01:44:36PM +0300, George Kadianakis wrote: >>> Hey Nick, >>> >>> this mail is about the schemes we were discussing during the dev >>> meeting on how

[tor-dev] What little-t-tor bridge features/issues we should address?

2014-07-11 Thread George Kadianakis
Hello Roger and Nick, as far as I know, bridge support was hastily implemented in little-t-tor, and it does not support all the features we would like it to support. During the dev meeting roadmapping, we added a task about improving the bridge implementation in Tor. Some of the items in the task

Re: [tor-dev] Defending against guard discovery attacks by pinning middle nodes

2014-07-15 Thread George Kadianakis
Ian Goldberg writes: > On Fri, Jul 11, 2014 at 01:44:36PM +0300, George Kadianakis wrote: >> Hey Nick, >> >> this mail is about the schemes we were discussing during the dev >> meeting on how to protect HSes against guard discovery attacks (#9001). >> >&g

[tor-dev] Pluggable transports meeting not very likely this Friday

2014-07-16 Thread George Kadianakis
Hello! It seems that many PT people (including me) won't be able to attend the scheduled PT meeting this Friday. For this reason, we are calling this meeting off. Feel free to lurk in IRC in any case. Maybe someone will want to talk PT with you even if there is no scheduled meeting :) Thanks an

Re: [tor-dev] Proposal for improving social incentives for relay operators

2014-07-22 Thread George Kadianakis
Am 2014-06-10 02:26, schrieb Virgil Griffith: > For a while I've been seeking to grow the Tor network in both size and > goodput. Towards this end, I've explored various avenues such as > increasing user-awareness via tor2web. More recently, I've been exploring > financial incentives like TorCoin

[tor-dev] Pluggable transports meeting tomorrow (16:00UTC Friday 1st of August 2014)

2014-07-31 Thread George Kadianakis
Hello brothers and sisters, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur tomorrow at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Thanks! ___ tor-dev mailing list tor-dev@lists.t

Re: [tor-dev] [DRAFT] Proposal: All Routers are Directory Servers

2014-07-31 Thread George Kadianakis
Matthew Finkel writes: > Hi All, > > Below is a draft proposal for making all relays also be directory > servers (by default). It's almost ready for a number, but it can use > some feedback beforehand (give or take a few days). > > Tonight I also found that Nick actually created a similar proposa

[tor-dev] Proposal 236 and the guardiness of a guard

2014-07-31 Thread George Kadianakis
One of the aims of proposal 236 is to reduce the period of inactiveness when a relay becomes a guard (see 'Phase three' of [0]). This phenomenon will become worse when the lifetime of the guard gets increased to 9 months, so we need to find a good fix. Proposal 236 tries to make young guards more

Re: [tor-dev] Proposal 236 and the guardiness of a guard

2014-08-01 Thread George Kadianakis
Nicholas Hopper writes: > On Thu, Jul 31, 2014 at 11:24 AM, George Kadianakis > wrote: >> - You can see that old guards (like RichardFeynman) see a shrinkage >> both on their guard and on their middle probabilities. This happens >> because both the total guard wei

Re: [tor-dev] Proposal 236 and the guardiness of a guard

2014-08-01 Thread George Kadianakis
Nicholas Hopper writes: > On Thu, Jul 31, 2014 at 11:24 AM, George Kadianakis > wrote: >> - You can see that old guards (like RichardFeynman) see a shrinkage >> both on their guard and on their middle probabilities. This happens >> because both the total guard wei

[tor-dev] Needed improvements to the PT website

2014-08-03 Thread George Kadianakis
Hello list, in my monthly status report [0] I mentioned that some PT-related parts of the website are in need of improvement. As a response, a few people sent me a private email asking me what kind of improvements I was thinking about. Instead of replying individually, I decided to send a mail to

[tor-dev] A change in the schedule of Pluggable Transport meetings

2014-08-09 Thread George Kadianakis
tl;dr: From now on, Tor PT meetings happen on Wednesdays. Same time. Next PT meeting: Wednesday 13th of August, at 16:00 UTC. Hello friends, I want to inform you of a schedule change that affects Pluggable Transport meetings. Because of the diverse set of timezones participating in the bi

Re: [tor-dev] little-t tor "projects" in need of another keyboard

2014-08-11 Thread George Kadianakis
tibi...@riseup.net writes: > Hi everyone, > > Is there any project in little-t tor that needs another hacker? I have > (under another name) been writing tor unit tests, which I've "finished". > What should I work on next? Happy to work on either new code or more unit > tests. > FWIW, if you want

Re: [tor-dev] [tor-talk] Tor Research Framework update

2014-08-11 Thread George Kadianakis
Gareth Owen writes: > Hi all > > I thought I'd give you an update on where the Tor Research Framework is now > at as there's been lots of development over the last few weeks. At present, > the framework is a largely fully functional tor client with code that is > easy to read, follow and cruciall

[tor-dev] On picking Introduction Points in Next Generation Hidden Services

2014-08-12 Thread George Kadianakis
One missing piece of rend-spec-ng.txt [0] is a section on how HSes should pick their Introduction Points (IPs). There are three main questions here: - How many IPs should an HS have? - Which relays can be IPs? - What's the lifetime of an IP? ==Introduction Points attacks== Before exploring thes

[tor-dev] Pluggable transports meeting tomorrow (16:00UTC Wednesday 13th of August 2014)

2014-08-12 Thread George Kadianakis
Hola brothers and sisters, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur tomorrow at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. As you see, the meeting day was recently changed from Fridays to Wednesdays: https://lists.

Re: [tor-dev] [tor-talk] Tor Research Framework update

2014-08-12 Thread George Kadianakis
Gareth Owen writes: > Hi George > > Thanks for your reply and information+links. Tim (cc-ed) is leading the > work on the fuzzer and is looking at a couple of different frameworks. > I've set up a example that can do port-forwarding to a BEGIN_DIR service > - so you can just point a fuzzer at

Re: [tor-dev] [tor-talk] Tor Research Framework update

2014-08-13 Thread George Kadianakis
Tim writes: >> On 13 Aug 2014, at 0:10, George Kadianakis wrote: >> >> Gareth Owen writes: > ... >>> The framework implements the tor protocol so should be easy to modify to do >>> fuzzing of the actual protocol but I'm skeptical how successful thi

[tor-dev] Guard nodes and network down events

2014-08-13 Thread George Kadianakis
Hello friends :) This is a post to discuss how Tor should treat its entry guards when its network goes down. This is part of ticket #12595 [0] which aims to design better interfaces and data structures for entry guards. This thread investigates what should happen when the network goes down and To

Re: [tor-dev] [tor-talk] Tor Research Framework update

2014-08-14 Thread George Kadianakis
Tim writes: > On 13 Aug 2014, at 22:33 , George Kadianakis wrote: > >> My plan was to make a Peach fuzzer to achieve this [0], but as I >> mentioned in a previous email I never got past the V3 link handshake >> since I actually had to implement Tor's crypto to g

Re: [tor-dev] On picking Introduction Points in Next Generation Hidden Services

2014-08-17 Thread George Kadianakis
Matthew Finkel writes: > On Tue, Aug 12, 2014 at 02:05:49PM +0300, George Kadianakis wrote: >> One missing piece of rend-spec-ng.txt [0] is a section on how HSes >> should pick their Introduction Points (IPs). There are three main >> questions here: >> - How

[tor-dev] [PATCH] Proposal 236 and voting

2014-08-21 Thread George Kadianakis
d and the number of months considered should also be mentioned somewhere in the votes? >From de60f2daaab573912fcd78057a93bc7e12eda96c Mon Sep 17 00:00:00 2001 From: George Kadianakis Date: Thu, 21 Aug 2014 13:24:11 +0300 Subject: [PATCH] Specify how Guard Appearance Fraction voting shou

Re: [tor-dev] [PATCH] Proposal 236 and voting

2014-08-31 Thread George Kadianakis
George Kadianakis writes: > I inline a patch that specifies how voting should happen in proposal 236. > > The changes reflect a discussion I had yesterday with nickm during the > Tor IRC meeting. > > BTW, while I like the simplicity of the new vote (just an integer), > I

[tor-dev] Pluggable transports meeting tomorrow (16:00UTC Wednesday 10th of September 2014)

2014-09-09 Thread George Kadianakis
Hola brothers and sisters, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur tomorrow at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. As you see, the meeting day was recently changed from Fridays to Wednesdays: https://lists.

Re: [tor-dev] [tor-talk] Tor Research Framework update

2014-09-12 Thread George Kadianakis
Tim writes: > On 13 Aug 2014, at 22:33 , George Kadianakis wrote: > >> My plan was to make a Peach fuzzer to achieve this [0], but as I >> mentioned in a previous email I never got past the V3 link handshake >> since I actually had to implement Tor's crypto to g

Re: [tor-dev] Defending against guard discovery attacks by pinning middle nodes

2014-09-13 Thread George Kadianakis
Paul Syverson writes: > On Fri, Jul 11, 2014 at 08:31:05AM -0400, Ian Goldberg wrote: >> On Fri, Jul 11, 2014 at 01:44:36PM +0300, George Kadianakis wrote: >> > Hey Nick, >> > >> > this mail is about the schemes we were discussing during the dev >> >

Re: [tor-dev] Defending against guard discovery attacks by pinning middle nodes

2014-09-13 Thread George Kadianakis
Michael Rogers writes: > On 13/09/14 14:07, George Kadianakis wrote: >> a) To reduce the ownage probabilities we could pick a single >> middle node instead of 6. That will greatly improve guard >> discovery probabilities, and make us look like this: >> >> HS -&

[tor-dev] Guardiness: Yet another external dirauth script

2014-09-16 Thread George Kadianakis
==Guardiness: Yet another external dirauth script== Introduction One well-known problem with Tor relays, is that Guards will suffer a big loss of traffic as soon as they get the Guard flag. This happens because clients pick guards every 2-3 months, so young guards will not get picked by o

Re: [tor-dev] Guardiness: Yet another external dirauth script

2014-09-17 Thread George Kadianakis
Damian Johnson writes: >> - Q: Why do you slow stem instead of parsing consensuses with Python on your >> own? >> >> This is another part where I might have taken the wrong design >> decision, but I decided to not get into the consensus parsing business >> and just rely on stem. >> >> This is al

Re: [tor-dev] Guardiness: Yet another external dirauth script

2014-09-17 Thread George Kadianakis
Sebastian Hahn writes: > On 16 Sep 2014, at 16:15, George Kadianakis wrote: >> How guardiness works >> The idea was that the guardiness script will be an external script >> that is run by Tor in a similar fashion to the bandwidth auth >> scripts. We chose that

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

2014-09-17 Thread George Kadianakis
Nicholas Hopper writes: > On Tue, Apr 15, 2014 at 6:35 AM, George Kadianakis > wrote: >> A patch for the proposal would be useful. If you don't have time to do >> it, just tell me and I will do it myself. > > Here's a patch: > https://www-users.cs.umn.edu/

Re: [tor-dev] Guardiness: Yet another external dirauth script

2014-09-17 Thread George Kadianakis
George Kadianakis writes: > Damian Johnson writes: > >>> - Q: Why do you slow stem instead of parsing consensuses with Python on >>> your own? >>> >>> This is another part where I might have taken the wrong design >>> decision, but I dec

Re: [tor-dev] Guardiness: Yet another external dirauth script

2014-09-22 Thread George Kadianakis
George Kadianakis writes: > ==Guardiness: Yet another external dirauth script== > > Introduction > > One well-known problem with Tor relays, is that Guards will suffer a > big loss of traffic as soon as they get the Guard flag. This happens > because clients pick gu

Re: [tor-dev] Defending against guard discovery attacks by pinning middle nodes

2014-09-22 Thread George Kadianakis
Roger Dingledine writes: > On Sat, Sep 13, 2014 at 04:07:13PM +0300, George Kadianakis wrote: >> So let's say that along with our guard, we also pick 6 second-tier >> guards (middle nodes) that also get pinned for 2-3 months. This makes >> us look like this: >

[tor-dev] Pluggable transports meeting today (16:00UTC Wednesday 24th of September 2014)

2014-09-24 Thread George Kadianakis
Hello! just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur today at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. As you see, the meeting day was recently changed from Fridays to Wednesdays: https://lists.torproject.org/pipermai

[tor-dev] On the visualization of OONI bridge reachability data

2014-10-04 Thread George Kadianakis
== What is bridge reachability data? == By bridge reachability data I'm referring to information about which Tor bridges are censored in different parts of the world. The OONI project has been developing a test that allows probes in censored countries to test which bridges are blocked and which a

[tor-dev] [PATCH] torspec/rend-spec-ng: Link to proof of the keyblinding scheme.

2014-10-06 Thread George Kadianakis
I attach a patch that adds a link to Nick Hopper's proof of the keyblinding scheme in rend-spec-ng.txt. Thanks! >From 2bc39a9721ed9639220b9c94c62d52cc5affd12b Mon Sep 17 00:00:00 2001 From: George Kadianakis Date: Mon, 6 Oct 2014 21:29:14 +0100 Subject: [PATCH] rend-spec-ng: Link

[tor-dev] Pluggable transports meeting today (16:00UTC Wednesday 8th of October 2014)

2014-10-08 Thread George Kadianakis
Hello! just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur today at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Thanks for your attention! ___ tor-dev mailing list tor-dev@lists.torpr

Re: [tor-dev] Guardiness: Yet another external dirauth script

2014-10-09 Thread George Kadianakis
George Kadianakis writes: > George Kadianakis writes: > >> ==Guardiness: Yet another external dirauth script== >> >> >> > > FWIW, a weasel suggested to me a potentially better solution than the > iffy summary files. > > He suggested parsing consensu

[tor-dev] Potential projects for SponsorR (Hidden Services)

2014-10-20 Thread George Kadianakis
Hello, this is an attempt to collect tasks that should be done for SponsorR. You can find the SponsorR page here: https://trac.torproject.org/projects/tor/wiki/org/sponsors/SponsorR I'm going to focus only on the subset of those categories that Roger/David told me are the most important for the s

[tor-dev] Pluggable transports meeting tomorrow (16:00UTC Wednesday 22nd of October 2014)

2014-10-21 Thread George Kadianakis
Hello! just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur tomorrow at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Thanks for your attention! ___ tor-dev mailing list tor-dev@lists.to

Re: [tor-dev] Potential projects for SponsorR (Hidden Services)

2014-10-22 Thread George Kadianakis
Virgil Griffith writes: >> - Opt-in HS indexing service > > I offer to captain and lead development of this one. > Thanks for offering to help! My main goal with this project would be to increase visibility of Hidden Services: make it easy for people to find Hidden Services that want to be foun

Re: [tor-dev] Potential projects for SponsorR (Hidden Services)

2014-10-29 Thread George Kadianakis
Christopher Baines writes: > On 20/10/14 14:37, George Kadianakis wrote: >> f) On a more researchy tone, this might also be a good point to start >>poking at the HS scalability project since it will really affect HS >>performance. >> >>We should look

[tor-dev] Stormy (was Re: Potential projects for SponsorR (Hidden Services))

2014-11-04 Thread George Kadianakis
Griffin Boyce writes: > Roger Dingledine wrote: > > > > >>> - #8902 Rumors that hidden services have trouble scaling to 100 >>> concurrent connections > > I've been curious about this ticket for a while, and happy to > structure&run a follow-up test on a controlled server. Since the > ori

[tor-dev] Pluggable transports meeting tomorrow (16:00UTC Wednesday 5th of November 2014)

2014-11-04 Thread George Kadianakis
Hello! just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur tomorrow at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Thanks for your attention! ___ tor-dev mailing list tor-dev@lists.to

Re: [tor-dev] Defending against guard discovery attacks by pinning middle nodes

2014-11-08 Thread George Kadianakis
"A. Johnson" writes: >> As I've suggested before, I really really think you should also analyze >> an I2P-like scheme where HSs try really hard to maintain path >> persistence to their RPs for some fixed time period on the order of an >> hour (but which can be parameterized and analyzed to give t

[tor-dev] [PATCH] Pinning middle nodes for HSes: anti-guard-discovery

2014-11-08 Thread George Kadianakis
Hello, inspired by the recent discussions on guard discovery, I went ahead and implemented a small patch for Tor that tries to help defend against Hidden Service guard discovery attacks. It basically allows the operator to specify a set of nodes that will be pinned as middle nodes in Hidden Servi

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