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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

README.md

Lighthouse: Ethereum 2.0

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

Documentation

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).