Ethereum consensus client in Rust
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Paul Hauner 1ef4f0ea12 Add gossip conditions from spec v0.12.3 (#1667)
## Issue Addressed

NA

## Proposed Changes

There are four new conditions introduced in v0.12.3:

 1. _[REJECT]_ The attestation's epoch matches its target -- i.e. `attestation.data.target.epoch ==
  compute_epoch_at_slot(attestation.data.slot)`
1. _[REJECT]_ The attestation's target block is an ancestor of the block named in the LMD vote -- i.e.
  `get_ancestor(store, attestation.data.beacon_block_root, compute_start_slot_at_epoch(attestation.data.target.epoch)) == attestation.data.target.root`
1. _[REJECT]_ The committee index is within the expected range -- i.e. `data.index < get_committee_count_per_slot(state, data.target.epoch)`.
1. _[REJECT]_ The number of aggregation bits matches the committee size -- i.e.
  `len(attestation.aggregation_bits) == len(get_beacon_committee(state, data.slot, data.index))`.

This PR implements new logic to suit (1) and (2). Tests are added for (3) and (4), although they were already implicitly enforced.

## Additional Info

- There's a bit of edge-case with target root verification that I raised here: https://github.com/ethereum/eth2.0-specs/pull/2001#issuecomment-699246659
- I've had to add an `--ignore` to `cargo audit` to get CI to pass. See https://github.com/sigp/lighthouse/issues/1669
2020-09-27 20:59:40 +00:00
.github Remove saturating arith from state_processing (#1644) 2020-09-25 05:18:21 +00:00
account_manager Prepare for v0.2.12 (#1672) 2020-09-26 06:35:45 +00:00
beacon_node Add gossip conditions from spec v0.12.3 (#1667) 2020-09-27 20:59:40 +00:00
book Add --staking flag (#1641) 2020-09-23 01:19:58 +00:00
boot_node Prepare for v0.2.12 (#1672) 2020-09-26 06:35:45 +00:00
common Prepare for v0.2.12 (#1672) 2020-09-26 06:35:45 +00:00
consensus Add gossip conditions from spec v0.12.3 (#1667) 2020-09-27 20:59:40 +00:00
crypto Revert "Update BLST, add force-adx support (#1595)" (#1649) 2020-09-23 00:25:56 +00:00
hooks Add a flag to make lighthouse portable across machines (#1423) 2020-07-31 05:00:39 +00:00
lcli Prepare for v0.2.12 (#1672) 2020-09-26 06:35:45 +00:00
lighthouse Prepare for v0.2.12 (#1672) 2020-09-26 06:35:45 +00:00
scripts Bump to v0.2.7 (#1561) 2020-08-24 08:25:34 +00:00
testing Update consensus code and tests to v0.12.3 (#1655) 2020-09-26 01:58:29 +00:00
validator_client Prepare for v0.2.12 (#1672) 2020-09-26 06:35:45 +00:00
.dockerignore Ensure .git is copied into docker (#1462) 2020-08-05 03:05:36 +00:00
.editorconfig Add editorconfig template 2019-03-11 15:09:57 +11:00
.gitignore Commit Cargo.lock changes, add build scripts (#1521) 2020-08-14 22:24:27 +00:00
.gitmodules Replace EF tests submodule with a makefile 2019-09-08 04:19:54 +10:00
bors.toml Fix bors timeouts (#1341) 2020-07-07 13:44:35 +00:00
Cargo.lock Prepare for v0.2.12 (#1672) 2020-09-26 06:35:45 +00:00
Cargo.toml Update LevelDB to v0.8.6, removing patch (#1636) 2020-09-21 11:53:53 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md (#751) 2020-01-03 10:45:53 +11:00
Cross.toml Ensure RUSTFLAGS is passed through on cross compile (#1529) 2020-08-17 10:06:06 +00:00
Dockerfile Revert 1502 - Switching docker user to lighthouse (#1578) 2020-09-01 01:32:02 +00:00
LICENSE Update License to Apache 2.0 2019-04-15 16:47:35 +10:00
Makefile Spadina support (v2) (#1670) 2020-09-26 01:58:31 +00:00
README.md Update consensus code and tests to v0.12.3 (#1655) 2020-09-26 01:58:29 +00:00

Lighthouse: Ethereum 2.0

An open-source Ethereum 2.0 client, written in Rust and maintained by Sigma Prime.

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Documentation

terminalize

Overview

Lighthouse is:

  • Fully open-source, licensed under Apache 2.0.
  • Security-focused. Fuzzing has begun and security reviews are underway.
  • Built in Rust, a modern language providing unique safety guarantees and excellent performance (comparable to C++).
  • Funded by various organisations, including Sigma Prime, the Ethereum Foundation, ConsenSys and private individuals.
  • Actively involved in the specification and security analysis of the emerging Ethereum 2.0 specification.

Like all Ethereum 2.0 clients, Lighthouse is a work-in-progress.

Development Status

Current development overview:

  • Specification v0.12.3 implemented, optimized and passing test vectors.
  • Rust-native libp2p with Gossipsub and Discv5.
  • RESTful JSON API via HTTP server.
  • Events via WebSocket.
  • Metrics via Prometheus.

Roadmap

  • April 2019: Inital single-client testnets.
  • September 2019: Inter-operability with other Ethereum 2.0 clients.
  • Q1 2020: lighthouse-0.1.0 release: All major phase 0 features implemented.
  • Q2 2020: Public, multi-client testnet with user-facing functionality.
  • Q2 2020: Third-party security review.
  • Q3 2020: Additional third-party security reviews.
  • Q3 2020: Long-lived, multi-client Beacon Chain testnet
  • Q4 2020: Production Beacon Chain (tentative).

Documentation

The Lighthouse Book contains information for testnet users and developers.

If you'd like some background on Sigma Prime, please see the Lighthouse Update #00 blog post or sigmaprime.io.

Contributing

Lighthouse welcomes contributors.

If you are looking to contribute, please head to the Contributing section of the Lighthouse book.

Contact

The best place for discussion is the Lighthouse Discord server. Alternatively, you may use the sigp/lighthouse gitter.

Encrypt sensitive messages using our PGP key.

Donations

Lighthouse is an open-source project and a public good. Funding public goods is hard and we're grateful for the donations we receive from the community via:

  • Gitcoin Grants.
  • Ethereum address: 0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b (donation.sigmaprime.eth).