tor-dev

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3581 discussions

Re: [tor-dev] Discussions
by teor 30 Jun '15

30 Jun '15

> On 1 Jul 2015, at 01:29 , Cory Pruce <corypruce(a)gmail.com> wrote: > > I've been able to do a > make install and am ready to continue setting up the test environment. I > see chutney on your github. I'll get that set up when I get home. Do you > have any advice for testing Tor? Also, feel free to move this to the > mailing list whenever you feel it's appropriate. > Hi Cory, I'm moving this to tor-dev as it's relevant to other developers. Chutney Please use the official chutney repository at git.torproject.org <http://git.torproject.org/> My chutney repository a little messy at the moment, and I've merged draft throughput-testing code into my master branch. You're welcome to test the draft code by merging https://github.com/teor2345/chutney/tree/bug14175-bandwidth <https://github.com/teor2345/chutney/tree/bug14175-bandwidth> The throughput-testing functionality works, but it needs to be tidied up, and have the hard-coded constants turned into command-line options. So it's not ready for release, but it is ready for an early review to check for functionality gaps and bugs. You might find throughput metrics useful to confirm that any multithreading changes are actually improving performance. Testing Once tor is built, you can test it using: # basic tests make test # extended tests make check # benchmarks /src/test/bench # verify tor connectivity using a local test network - requires chutney make test-network # verify that the core functionality of tor works, requires chutney and IPv6 on localhost src/test/test-network.sh --flavour bridges+ipv6+hs # verify that the core functionality of tor works, using chutney, but without IPv6 src/test/test-network.sh --flavour bridges src/test/test-network.sh --flavour hs There's also various other testing tools: shadow Tor network simulator static analysers, such as coverity and clang-scan dynamic sanitizers: Undefined Behaviour (UBSan), Address (ASAN), … fuzzing (I'm working on some tor-specific harnesses for fuzzing, but they're not ready) and I'm sure there are others which I've missed. Generally, I'm happy with code once I know it: * compiles with no warnings, * passes the extended unit tests (make check), including any tests written for new functionality, and * passes all the connectivity tests in a comprehensive test network (bridges+ipv6+hs). For bonus points, you can compile tor using UBSan and ASAN. If you're using clang, you'll find that tor/contrib/clang helps with setting this up. It lists known undefined behaviour in the Tor codebase, so it may be useful if you want to do something similar with gcc. (However, getting sanitizers to work can be incredibly fiddly and a total time-suck, too. So if it's just not working, skip it.) I'll also occasionally run code through a static analyser, to find subtle bugs which haven't been uncovered using UBSan/ASAN. Again, this isn't something everyone needs to do. Others may have advice on testing multithreading code in particular. Tim Tim Wilson-Brown (teor) teor2345 at gmail dot com pgp 0xABFED1AC https://gist.github.com/teor2345/d033b8ce0a99adbc89c5 teor at blah dot im OTR D5BE4EC2 255D7585 F3874930 DB130265 7C9EBBC7

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Damian's Status Report - June 2015
by Damian Johnson 29 Jun '15

29 Jun '15

Guten morgen lovely people of the Internet. This June my grandpa passed away so spent quite a bit of time with family. Tor stuff didn't get much attention, but I did revise a couple small parts of Nyx. -------------------------------------------------------------------------------- Nyx Installer and Descriptor Dialog Rewrite -------------------------------------------------------------------------------- This month I rewrote the installer of Nyx and its descriptor dialog. As usual this was mostly about cleaning and stabilizing the codebase. Only functional changes were... * Our setup.py now supports --man-page and --sample-path arguments for customizing resource locations. * Test coverage for installation. * Installing and our tests are now python3 compatible. Sadly no, this doesn't mean Nyx runs under python3 just yet but it's a step in that direction. * The descriptor dialog now shows microdescriptors (this part of the codebase predated them). Cheers! -Damian

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Re: [tor-dev] tor-dev Digest, Vol 53, Issue 27
by Cory Pruce 29 Jun '15

29 Jun '15

Thanks teor, that'd be awesome! I've been able to resolve most of the dependencies easily until the file "readpassphrase.h" (and thus .o) was shown to be missing during make. Are you still using the git branch? I'll definitely take a look into the throughput tool once I get set up :D - Cory On Mon, Jun 29, 2015 at 5:00 AM, <tor-dev-request(a)lists.torproject.org> wrote: > Send tor-dev mailing list submissions to > tor-dev(a)lists.torproject.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-dev > or, via email, send a message with subject or body 'help' to > tor-dev-request(a)lists.torproject.org > > You can reach the person managing the list at > tor-dev-owner(a)lists.torproject.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of tor-dev digest..." > > > Today's Topics: > > 1. List of projects (Cory Pruce) > 2. Re: List of projects (Nick Mathewson) > 3. Re: List of projects (Cory Pruce) > 4. Re: Multithreaded crypto on Tor (teor) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 28 Jun 2015 11:12:45 -0700 > From: Cory Pruce <corypruce(a)gmail.com> > To: dgoulet(a)torproject.org, nickm(a)torproject.org, > meejah(a)torproject.org, atagar(a)torproject.org, > tor-dev(a)lists.torproject.org > Subject: [tor-dev] List of projects > Message-ID: <5590391D.6020900(a)gmail.com> > Content-Type: text/plain; charset=utf-8 > > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hey, > > I see now that the multithreading on the crypto operations is at least > partly resolved (#9682) but there still exists more to be done. I could > help on the condition variables and possibly more with that project or > another one from the project ideas on the Tor volunteer page. For > example, I've worked with the Stem library before doing primarily > traffic analysis in a class at Carnegie Mellon. If no one has worked on > the first option, I could do that as well. Please let me know if any of > you are willing to discuss these with me! I'd like to hear back knowing > that I'm talking to other human beings :-) Sorry if this isn't the way I > should be contacting. If so, let me know! > > - - Cory > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > > iQIcBAEBAgAGBQJVkDkdAAoJEB7DuCIJauCg7q0P/0KNxwoLPo1ZlsO7X5/p+yC5 > qHDHrAuVworNkER/t35xEQPJmGy9hTp7XaxHm2JWwbKpkWtS9dbTVA5LPD5esRsz > z5dhJOwKOXh9BIQ3qjBk22OPg1YbUJ8ykwTiwUY5BM/Tilk6UZqmjZDCOlpp5ufv > F4w9tUL9ug+K6VRnM/XksZhYjx1Wnhei5PesfZoTBiggj4T0q/16amduIhyALilm > HY5hHVCxo9mvmBBwzUwkRhi+kQ39eeLCggRbBqQv+WsYH8FNesoUcxFjy/AGzTGT > 4Ul4M8E41oHudtvmFIqzEgMmV5TjZaSR5X52aW+7mQAXRAH6IzxX8E+ji5CJIWLo > pE2zPV3dX+AsYx1lkU/x0hZvX2537wt8pNWka0ORTn7HKLnb/6NoaC7gYHr8ZftR > gcbSru49xyWNmzjfXSok7Unfih37MQY8Y1nGNqauHo8lZ38qmAnsdaGzAB409RgP > R30G82hg2QRFBA1486IqP/LtSxhk1UdEyWWvVlXWOYRvVF68l3g1mHVswIxT3k4G > z3a+0EmwF52xxvzgmMwTlxeWfa1/3uQA3w2el9e92/Xtc5lw66nE/k+kX7Mpg7GM > kDFZ0UkBgxXATy0kuCdU7enZjzpn6M1vDwhfmovpGAMDVaaMZzzII17KEJyVv8Sp > G7Wxg+lZjr9SOvRIOxf1 > =Ebps > -----END PGP SIGNATURE----- > > > > > ------------------------------ > > Message: 2 > Date: Sun, 28 Jun 2015 17:35:47 -0400 > From: Nick Mathewson <nickm(a)torproject.org> > To: Cory Pruce <corypruce(a)gmail.com> > Cc: Damian Johnson <atagar(a)torproject.org>, meejah(a)torproject.org, > tor-dev(a)lists.torproject.org, David Goulet <dgoulet(a)torproject.org > > > Subject: Re: [tor-dev] List of projects > Message-ID: > <CAKDKvuzxLDGjokxZK26_X=_ > H9-J_wMdOYrOakyGv2cs6kdPSig(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > On Sun, Jun 28, 2015 at 2:12 PM, Cory Pruce <corypruce(a)gmail.com> wrote: > > > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Hey, > > > > I see now that the multithreading on the crypto operations is at least > > partly resolved (#9682) but there still exists more to be done. I could > > help on the condition variables and possibly more with that project or > > another one from the project ideas on the Tor volunteer page. For > > example, I've worked with the Stem library before doing primarily > > traffic analysis in a class at Carnegie Mellon. If no one has worked on > > the first option, I could do that as well. Please let me know if any of > > you are willing to discuss these with me! I'd like to hear back knowing > > that I'm talking to other human beings :-) Sorry if this isn't the way I > > should be contacting. If so, let me know! > > Hi, Cory, and sorry about the delay! I saw your earlier two messages, > and I just thought I'd send you a quick note today to say, "Yup, we > got them!" I'm going to be a little more slow responding than I would > like, since I'm preparing for a trip to PETS > (https://petsymposium.org/2015/), but I'll try to write back some > actual useful info as soon as I can. > > cheers, > -- > Nick > > > ------------------------------ > > Message: 3 > Date: Sun, 28 Jun 2015 14:37:07 -0700 > From: Cory Pruce <corypruce(a)gmail.com> > To: Nick Mathewson <nickm(a)torproject.org> > Cc: atagar(a)torproject.org, meejah(a)torproject.org, David Goulet > <dgoulet(a)torproject.org>, tor-dev(a)lists.torproject.org > Subject: Re: [tor-dev] List of projects > Message-ID: > < > CANOqyr7fzF2ADbmYof+Pufd3DGgFwVNqmLkZzvVSKecz_7QywQ(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Awesome, no worries. Thanks! > On Jun 28, 2015 2:35 PM, "Nick Mathewson" <nickm(a)torproject.org> wrote: > > > On Sun, Jun 28, 2015 at 2:12 PM, Cory Pruce <corypruce(a)gmail.com> wrote: > > > > > > -----BEGIN PGP SIGNED MESSAGE----- > > > Hash: SHA1 > > > > > > Hey, > > > > > > I see now that the multithreading on the crypto operations is at least > > > partly resolved (#9682) but there still exists more to be done. I could > > > help on the condition variables and possibly more with that project or > > > another one from the project ideas on the Tor volunteer page. For > > > example, I've worked with the Stem library before doing primarily > > > traffic analysis in a class at Carnegie Mellon. If no one has worked on > > > the first option, I could do that as well. Please let me know if any of > > > you are willing to discuss these with me! I'd like to hear back knowing > > > that I'm talking to other human beings :-) Sorry if this isn't the way > I > > > should be contacting. If so, let me know! > > > > Hi, Cory, and sorry about the delay! I saw your earlier two messages, > > and I just thought I'd send you a quick note today to say, "Yup, we > > got them!" I'm going to be a little more slow responding than I would > > like, since I'm preparing for a trip to PETS > > (https://petsymposium.org/2015/), but I'll try to write back some > > actual useful info as soon as I can. > > > > cheers, > > -- > > Nick > > >

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Re: [tor-dev] Multithreaded crypto on Tor
by teor 29 Jun '15

29 Jun '15

> Date: Sat, 27 Jun 2015 20:44:02 -0700 > From: Cory Pruce <corypruce(a)gmail.com> > To: tor-dev(a)lists.torproject.org > Subject: [tor-dev] Multithreaded crypto on Tor > Message-ID: <558F6D82.2010400(a)gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hi! > > Let me start by introducing myself. My name is Cory Pruce, am an > Information Technology - Information Security Master's student at > Carnegie Mellon, and would like to get more involved in Tor! I have done > a bit of programming in C and have a pretty substantial crypto > background. I'm not in the Google summer of code but would really like > to complete this project :D (see screenshot) Please let me know if > anyone is currently working on this and if Nick, David, or anyone would > like to give me some advice and be someone I can bounce ideas off of :-) > > Thanks and I hope to hear back soon! > > - Cory > > P.S. I have cloned the repo and have been looking through relay.* and > cpuworker.* files. I just would like to speak with someone before I jump > in :p Hi Cory, Multithreaded crypto is a *very* popular request on the tor-relays mailing list, as many relays have multiple cores, and significant network bandwidth. Tor limits the number of relays per IPv4 address to 2 to mitigate sybil attacks, so the best way for relay operators to increase their throughput is multithreaded crypto. I'm not familiar with the specifics of tor's multithreading implementation, but please contact me if you need assistance setting up a local test network. I've made some recent changes to the chutney test tool which allow throughput to be measured. These changes work on Linux and OS X, but they're still under review, and the git branch isn't as organised as I would like. teor teor2345 at gmail dot com pgp 0xABFED1AC https://gist.github.com/teor2345/d033b8ce0a99adbc89c5 teor at blah dot im OTR D5BE4EC2 255D7585 F3874930 DB130265 7C9EBBC7

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List of projects
by Cory Pruce 28 Jun '15

28 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hey, I see now that the multithreading on the crypto operations is at least partly resolved (#9682) but there still exists more to be done. I could help on the condition variables and possibly more with that project or another one from the project ideas on the Tor volunteer page. For example, I've worked with the Stem library before doing primarily traffic analysis in a class at Carnegie Mellon. If no one has worked on the first option, I could do that as well. Please let me know if any of you are willing to discuss these with me! I'd like to hear back knowing that I'm talking to other human beings :-) Sorry if this isn't the way I should be contacting. If so, let me know! - - Cory -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVkDkdAAoJEB7DuCIJauCg7q0P/0KNxwoLPo1ZlsO7X5/p+yC5 qHDHrAuVworNkER/t35xEQPJmGy9hTp7XaxHm2JWwbKpkWtS9dbTVA5LPD5esRsz z5dhJOwKOXh9BIQ3qjBk22OPg1YbUJ8ykwTiwUY5BM/Tilk6UZqmjZDCOlpp5ufv F4w9tUL9ug+K6VRnM/XksZhYjx1Wnhei5PesfZoTBiggj4T0q/16amduIhyALilm HY5hHVCxo9mvmBBwzUwkRhi+kQ39eeLCggRbBqQv+WsYH8FNesoUcxFjy/AGzTGT 4Ul4M8E41oHudtvmFIqzEgMmV5TjZaSR5X52aW+7mQAXRAH6IzxX8E+ji5CJIWLo pE2zPV3dX+AsYx1lkU/x0hZvX2537wt8pNWka0ORTn7HKLnb/6NoaC7gYHr8ZftR gcbSru49xyWNmzjfXSok7Unfih37MQY8Y1nGNqauHo8lZ38qmAnsdaGzAB409RgP R30G82hg2QRFBA1486IqP/LtSxhk1UdEyWWvVlXWOYRvVF68l3g1mHVswIxT3k4G z3a+0EmwF52xxvzgmMwTlxeWfa1/3uQA3w2el9e92/Xtc5lw66nE/k+kX7Mpg7GM kDFZ0UkBgxXATy0kuCdU7enZjzpn6M1vDwhfmovpGAMDVaaMZzzII17KEJyVv8Sp G7Wxg+lZjr9SOvRIOxf1 =Ebps -----END PGP SIGNATURE-----

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Multithreaded crypto on Tor
by Cory Pruce 28 Jun '15

28 Jun '15

Hi! Let me start by introducing myself. My name is Cory Pruce, am an Information Technology - Information Security Master's student at Carnegie Mellon, and would like to get more involved in Tor! I have done a bit of programming in C and have a pretty substantial crypto background. I'm not in the Google summer of code but would really like to complete this project :D (see screenshot) Please let me know if anyone is currently working on this and if Nick, David, or anyone would like to give me some advice and be someone I can bounce ideas off of :-) Thanks and I hope to hear back soon! - Cory P.S. I have cloned the repo and have been looking through relay.* and cpuworker.* files. I just would like to speak with someone before I jump in :p project

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Tor dev meetings schedule changes for July
by Nick Mathewson 27 Jun '15

27 Jun '15

Hello, all! Usually the Tor development team has our weekly online[1] Tor developers meetings at Wednesday 1330 UTC (==0930 EDT), and our weekly online patch workshop time at 1800 UTC (==1400 EDT). (This is for the program 'tor', not for all the other software that happens in the Tor universe) But for the first week of July, a lot of people will be in PETS[2]. And for the second week, I'll be on vacation. So here's the revised schedule. Tuesday, June 30: Patch workshop goes on as scheduled. Nick and a few others will probably be absent. Wednesday, July 1: No weekly dev meeting! Tuesday, July 7: Patch workshop goes on as scheduled. Nick will be absent; others will be back. Wednesday, July 8: Dev meeting goes on as scheduled. Nick will probably be absent, but will send in an update somehow. For the rest of the month, we'll be on a regular schedule. [1] #tor-dev on OFTC [2] https://petsymposium.org/2015/ best wishes, -- Nick

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Fwd: Orbot v15.0.1 beta 3 and NetCipher update
by Nathan Freitas 26 Jun '15

26 Jun '15

----- Original message ----- From: Nathan of Guardian <nathan(a)guardianproject.info> To: guardian-dev(a)lists.mayfirst.org Subject: Orbot v15.0.1 beta 3 and NetCipher update Date: Fri, 26 Jun 2015 10:19:49 -0400 *** Orbot v15.0.1 beta 3 released *** From: https://dev.guardianproject.info/news/233 See our previous news update (https://dev.guardianproject.info/news/231) for the more data or review the changelog here: https://gitweb.torproject.org/orbot.git/tree/CHANGELOG?id=e00f830ecadbca1b0… We've pushed the release to our Google Play beta channel (https://play.google.com/apps/testing/org.torproject.android) and our /release folder here. APK: https://guardianproject.info/releases/Orbot-v15.0.1-beta-3.apk PGP Sig: https://guardianproject.info/releases/Orbot-v15.0.1-beta-3.apk.asc You can also use FDroid to subscribe to our nightlies repo here (please uninstall any other version of Orbot first): https://dev.guardianproject.info/debug/org.torproject.android/fdroid/repo *** NetCipher library updated (v1.2) *** We've also updated our NetCipher library to support the update Intent API in Orbot that supports background starting, improved status messages via broadcasts and more. NetCipher also includes clearer code for support HttpUrlConnection proxying, TLS socket hardening, and has been re-organized a bit for clarity. https://github.com/guardianproject/NetCipher The sample app shows how to use these classes: https://github.com/guardianproject/NetCipher/tree/master/sample -- Nathan of Guardian nathan(a)guardianproject.info

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update obfs4proxy in deb.torproject.org
by s7r 24 Jun '15

24 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Hi, An update is needed in http:// deb.torproject.org/torproject.org obfs4proxy main to version 0.0.5 (we currently have 0.0.4). armel and amrhf packages for obfs4proxy would be nice too, for mobiles/tablets/raspberrys etc. Also, why do we have tor-experimental-0.2.6.x-$dist_codename and tor-nightly-0.2.6.x-$dist_codename - any difference between them? I know 'nightly master' is for latest alpha dev release, but what's the experimental used for? -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQEcBAEBCAAGBQJVhzu8AAoJEIN/pSyBJlsRIXgH/1v01c0oArU6E/xyzfi4DLN6 6bLK9emfzTAimtwgIQfH1POL+GR3xqpLl5TURN0wGEdI1Sm1vBK6wg0/mnsjNJAD +yulRlfJlbjLn+H2TJ1XFsKNQudIRpstdjQ0hyrA4SmOV3V42rk6taQSdM/b+zwG 2v54+P05Th/bbq63UDKoLjbzal/sMUe+2l1lYxO1BbxiXL9JkGU5qCTnG8uM+yXK IEXCdDlZpEdmov6ueP3PdiCrhS9v5HsZ7TIGKqVuuie6Kf1yrxIgBP5rlKsdJgqI V1bnHyhs1zvME+Klw+DF8Axqb1PqPY/dV5WoIo+s++H3+phA1TSmG46ebj5WG6E= =R2Kk -----END PGP SIGNATURE-----

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Re: [tor-dev] The future of GetTor
by Adam Pritchard 23 Jun '15

23 Jun '15

> > I'm currently the maintainer of GetTor [1], and together with Nima and > Sukhbir we have been talking about the future of it. If this conversation moves elsewhere, I would really like to be kept in the loop. I'm the primary maintainer of Psiphon's email auto-responder, which was initially modeled on Tor's approach. Psiphon is, obviously, also extremely interested in robust ways of making our tools available in censoring regions. (So, Satori, etc., are also interesting.) Relatedly... When doing Logjam, etc., testing on our responder I found testssl.sh[1] to be a handy tool. Used like so: ./testssl.sh --mx torproject.org CheckTLS[2] is also good for actually doing email send and receive tests. We're currently struggling a bit with just how hardcore we can be in securing our server communications. Right now Postfix is configured[3] to only connect out using TLS and only accept incoming TLS connections from servers with a verifiable cert. That seems reasonable, except... we're getting complaints that Chinese mail services don't meet those criteria, and Chinese users can't/won't/don't use Gmail/Hotmail/Yahoo. ...As an example of the sort of shared hurdles we might encounter. [1]: https://testssl.sh/ [2]: https://www.checktls.com/ [3]: https://bitbucket.org/psiphon/psiphon-circumvention-system/src/2d052db9597d… -- Adam Pritchard Psiphon Inc.

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