lighthouse/testing/execution_engine_integration/Cargo.toml
Michael Sproul 4bd2b777ec Verify execution block hashes during finalized sync (#3794)
## Issue Addressed

Recent discussions with other client devs about optimistic sync have revealed a conceptual issue with the optimisation implemented in #3738. In designing that feature I failed to consider that the execution node checks the `blockHash` of the execution payload before responding with `SYNCING`, and that omitting this check entirely results in a degradation of the full node's validation. A node omitting the `blockHash` checks could be tricked by a supermajority of validators into following an invalid chain, something which is ordinarily impossible.

## Proposed Changes

I've added verification of the `payload.block_hash` in Lighthouse. In case of failure we log a warning and fall back to verifying the payload with the execution client.

I've used our existing dependency on `ethers_core` for RLP support, and a new dependency on Parity's `triehash` crate for the Merkle patricia trie. Although the `triehash` crate is currently unmaintained it seems like our best option at the moment (it is also used by Reth, and requires vastly less boilerplate than Parity's generic `trie-root` library).

Block hash verification is pretty quick, about 500us per block on my machine (mainnet).

The optimistic finalized sync feature can be disabled using `--disable-optimistic-finalized-sync` which forces full verification with the EL.

## Additional Info

This PR also introduces a new dependency on our [`metastruct`](https://github.com/sigp/metastruct) library, which was perfectly suited to the RLP serialization method. There will likely be changes as `metastruct` grows, but I think this is a good way to start dogfooding it.

I took inspiration from some Parity and Reth code while writing this, and have preserved the relevant license headers on the files containing code that was copied and modified.
2023-01-09 03:11:59 +00:00

24 lines
815 B
TOML

[package]
name = "execution_engine_integration"
version = "0.1.0"
edition = "2021"
[dependencies]
tempfile = "3.1.0"
serde_json = "1.0.58"
task_executor = { path = "../../common/task_executor" }
tokio = { version = "1.14.0", features = ["rt-multi-thread", "macros"] }
futures = "0.3.7"
exit-future = "0.2.0"
environment = { path = "../../lighthouse/environment" }
execution_layer = { path = "../../beacon_node/execution_layer" }
sensitive_url = { path = "../../common/sensitive_url" }
types = { path = "../../consensus/types" }
unused_port = { path = "../../common/unused_port" }
ethers-core = "1.0.2"
ethers-providers = "1.0.2"
deposit_contract = { path = "../../common/deposit_contract" }
reqwest = { version = "0.11.0", features = ["json"] }
hex = "0.4.2"
fork_choice = { path = "../../consensus/fork_choice" }