Roadmap(DR): Validator Privacy

[kaiserd]

Validator Privacy

This is part of the Vac Deep Research, Anonymity&Privacy branch.

this roadmap is WIP

Tor Push

Background and motivation here.

• [x] comprehensive current/related work study on Validator Privacy
  • focus on network layer but also including: network vs consesus layer privacy (SSLE), as well as combinations
• [x] PoC of Tor push in Nimbus (testnet Goerli) https://github.com/vacp2p/nimbus-eth2-experimental/issues/1
  • first latency measurements (comprehensive analysis in next milestone)
  • research log post on Tor push / Nimbus PoC incl first latency measurements
  • update/adjust Tor push spec
  • talk @ Logos research call
• [ ] thorough anonymity/sec analysis of Tor push for Validator privacy
• [ ] thorough latency analysis of Tor push
• [ ] paper (for workshop) on introducing and analysing Tor-push
• [ ] employ RLN for rate limiting

Privacy Preserving Node Provider Network

Goal: a privacy preserving and decentralized alternative to current node providers. Tor push + RLN, explored in the previous step, will serve as component in the Privacy Preserving Node Provider network.

• [ ] EF proposal joint with chainsafe.
• [ ] ...
• [ ] incentivize adding nodes to the network
• [ ] ...

Custom Onion Routing / Mix-Net Solution

(potentially in the future)

• discussion in Validator Privacy Discord

Nomos Integration

(future work)

[ujscale]

Integrating TorSwitch within nimbus ..another approach below ((the previous "Tor push PoC" can be ignored)

https://github.com/vacp2p/nimbus-eth2-experimental/pull/2

[ujscale]

These are working changes that are able to send messages (attestation, block) over Tor Fixing init for torPeers, Adding async tor connection, Adding log msgs Only tested the sender side so far. Still to do further testing

[ujscale]

This commit provides the first tor based gossipsub instance usage with in nimbus to broadcast attestations over tor. The validator was successfully run based on this and stats were collected

Stats collected Validator

[kaiserd]

Validator privacy realted milestones have moved to the Vac DR roadmap