On 12 Dec (09:33:58), Toralf Förster wrote:
On 12/11/18 10:54 PM, nusenu wrote:
from their fingerprints
I'm just curious that the fingerprints starts with the same sequence. I was under the impression that the fingerprint is somehow unique like a hash?
If one would like to position their relay on the hashring at a specific spot, you can bruteforce the key generation to match the first bytes of the fingerprint. Usually 4 or 5 bytes are enough and it doesn't take that long to compute.
And because the position on the hashring is predictable over time for hidden service *version 2*, then anyone can setup relays that in 5 days will be at the right position.
Thus the importance to catch these relays before they get the HSDir flag that is 96 hours of uptime.
Cheers! David