Re: [tor-dev] Proposal 222: Stop sending client timestamps

2013-08-22 Thread Maxim Kammerer
On Thu, Aug 22, 2013 at 6:46 PM, Nick Mathewson wrote: >Despite this late date, many hosts aren't running NTP and >don't have very well synchronized clocks. Even more hosts >aren't running a secure NTP; it's probably easy to >desynchronize target hosts. Not strongly related to the

Re: [tor-dev] Proposal 222: Stop sending client timestamps

2013-08-22 Thread Nick Mathewson
On Thu, Aug 22, 2013 at 12:33 PM, George Kadianakis wrote: [...] >> 2.2. AUTHENTICATE (server) >> >>The AUTHENTICATE cell is not ordinarily sent by clients. It >>contains an 8-byte timestamp and a 16-byte random value. >>Instead, let's replace both with a 24-byte (truncated) HMAC of >

Re: [tor-dev] Proposal 222: Stop sending client timestamps

2013-08-22 Thread George Kadianakis
Nick Mathewson writes: > Filename: 222-remove-client-timestamps.txt > Title: Stop sending client timestamps > Authors: Nick Mathewson > Created: 22 August 2013 > Target: 0.2.5.x > Status: Open > > 0. Summary > >There are a few places in Tor where clients and servers send >timestamps. I l

[tor-dev] Proposal 222: Stop sending client timestamps

2013-08-22 Thread Nick Mathewson
Filename: 222-remove-client-timestamps.txt Title: Stop sending client timestamps Authors: Nick Mathewson Created: 22 August 2013 Target: 0.2.5.x Status: Open 0. Summary There are a few places in Tor where clients and servers send timestamps. I list them and discuss how to eliminate them.