mirror of https://github.com/status-im/nimbus-eth2.git synced 2025-01-09 22:06:21 +00:00

History

* fulu

* fix ci

* fix ncli

* attempt to fix ci

* fix wss_sim build

* fix vc api

* updated tests

* resolve merge conflicts

* fix tests

* fix check

* attempt to fix minimal test in CI

* addressed reviews

---------

Co-authored-by: tersec <tersec@users.noreply.github.com>

2024-11-13 10:29:14 +07:00

batch_validation.nim

Use Pippenger multiplication for combining multiple sigs of same msg (#6484 )

2024-08-16 23:42:46 +02:00

block_processor.nim

Init Fulu fork (#6677 )

2024-11-13 10:29:14 +07:00

eth2_processor.nim

add Electra attester slashing gossip support (#6582 )

2024-09-26 08:11:58 +02:00

gossip_validation.nim

Init Fulu fork (#6677 )

2024-11-13 10:29:14 +07:00

light_client_processor.nim

extend light client protocol for Electra (#6375 )

2024-06-26 19:02:03 +00:00

optimistic_processor.nim

remove Bellatrix EL syncing support from light client (#6352 )

2024-06-14 01:23:17 +00:00

README.md

automated consensus spec URL updating to v1.5.0-alpha.8 (#6617 )

2024-10-09 08:37:35 +02:00

README.md

Gossip Processing

This folder holds a collection of modules to:

validate raw gossip data before
- rebroadcasting it (potentially aggregated)
- sending it to one of the consensus object pools

Validation

Gossip validation is different from consensus verification in particular for blocks.

Blocks: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#beacon_block
Attestations (aggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
Attestations (unaggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/p2p-interface.md#attestation-subnets
Voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#voluntary_exit
Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#proposer_slashing
Attester slashing: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#attester_slashing

There are multiple consumers of validated consensus objects:

a ValidationResult.Accept output triggers rebroadcasting in libp2p
- We jump into method validate(PubSub, Message) in libp2p/protocols/pubsub/pubsub.nim
- which was called by rpcHandler(GossipSub, PubSubPeer, RPCMsg)
a blockValidator message enqueues the validated object to the processing queue in block_processor
- blockQueue: AsyncQueue[BlockEntry] (shared with request_manager and sync_manager)
- This queue is then regularly processed to be made available to the consensus object pools.
a xyzValidator message adds the validated object to a pool in eth2_processor
- Attestations (unaggregated and aggregated) get collected into batches.
- Once a threshold is exceeded or after a timeout, they get validated together using BatchCrypto.

Security concerns

As the first line of defense in Nimbus, modules must be able to handle bursts of data that may come:

from malicious nodes trying to DOS us
from long periods of non-finality, creating lots of forks, attestations