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[tor-bugs] #6369 [Analysis]: Gather empirical data on AES/RSA operations performed by typical relays or bridges
#6369: Gather empirical data on AES/RSA operations performed by typical relays or
bridges
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Reporter: karsten | Owner: karsten
Type: task | Status: new
Priority: normal | Milestone:
Component: Analysis | Version:
Keywords: | Parent:
Points: | Actualpoints:
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At the Florence hackfest I was asked for the typical number of AES/RSA
operations performed by a relay or bridge, say, per day. This information
is relevant, e.g., for designing the hardware capabilities of a Torouter
device.
Here's my plan to find out:
- We can easily derive the number of AES operations by looking at the
total traffic pushed by relays and bridges. Extra-info descriptors
contain bandwidth histories that we could use here. If we assume 1 AES
operation per 16 written or read bytes, we should be quite close to
reality.
- Nick suggested to send a USR1 signal to a tor process to write lines
like this to their log (this line comes from a client):
`Jul 10 18:31:22.904 [info] PK operations: 0 directory objects signed, 0
directory objects verified, 0 routerdescs signed, 2968 routerdescs
verified, 216 onionskins encrypted, 0 onionskins decrypted, 30 client-side
TLS handshakes, 0 server-side TLS handshakes, 0 rendezvous client
operations, 0 rendezvous middle operations, 0 rendezvous server
operations.`
We could ask a few friendly relay and bridge operators on tor-talk to
tell us the number of encrypted and decrypted onionskins together with the
fingerprint. We can then look at the uptime of that relay or bridge in
the descriptor archives and compute the average number of operations per
day.
Is there an easier way to find out how many AES/RSA operations a relay or
bridge does per day?
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6369>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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