[tor-bugs] #16979 [- Select a component]: Prevent selection of ajacent nodes from the same cooperative jurisdictions

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#16979: Prevent selection of ajacent nodes from the same cooperative jurisdictions
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 Reporter:  cypherpunks           |          Owner:
     Type:  defect                |         Status:  new
 Priority:  normal                |      Milestone:
Component:  - Select a component  |        Version:
 Keywords:                        |  Actual Points:
Parent ID:                        |         Points:
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 When the ajacent nodes are selected from the cooperative jurisdictions
 there is a chance that anonimity is undermined with sharing of the data
 from surveillance networks.

 I propose
 1 create an ajacency matrix Coop[i,j] describing jurisdictions
 cooperating. High values mean more cooperation, zero mean no cooperation
 above some ground level.
 Coop[i,j]!=Coop[j,i] in general case, for example Germany shares more data
 with the US than the US with Germany.

 2 Let i-th node have jurisdiction A_i.
 Then the probability of taking any node with jurisdiction A_{i+1} as next
 hop should be
 (number of jurisdictions)/Coop[A_i,A_{i+1}]

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16979>
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