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 crucially change for custom functionality.Â
Completed
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The examples exercise a big chunk of the functionality so in the examples directory, we now have examples on how to do:
- Circuit building, Random circuits based on flags, etc
- Building HS circuits and establishing streams to their service
- Consensus parsing examples
- RELAY_EARLY scanner - scans HSDirs looking for RELAY_EARLYs coming the wrong way (aka the recent Blackhat deanon attack)
- Tor SOCKS Proxy and PortForwarder
The examples are here:
The RELAY_EARLY scanner took around five minutes to write for example and didn't require modifying core library code.
Work in progress
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Fuzzer: We also have another chap (twilsonb) working on a fuzzing framework for Tor that is capable of fuzzing the protocol and directory services - although this is at early stage I'm sure he'd welcome help from anyone interested.
Relay: We're working on building the capability to act as a Tor relay with examples for building malicious guard nodes that deny circuits or do correlation attacks.
Naturally, we'll also look later down the line at optionally integrating with the shadow simulator for research which shouldn't be done on the live network.
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If anyone is interested in helping out then please dont hesitate to get in touch.
BestÂ
Gareth
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Dr Gareth Owen
Senior Lecturer
School of Computing, University of Portsmouth
Tel: 02392 846423