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Implement weak subjectivity safety checks (#7347)

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Closes #7273


  https://github.com/ethereum/consensus-specs/pull/4179


Co-Authored-By: Eitan Seri-Levi <eserilev@ucsc.edu>

Co-Authored-By: Eitan Seri- Levi <eserilev@gmail.com>

Co-Authored-By: Michael Sproul <michaelsproul@users.noreply.github.com>

Co-Authored-By: dapplion <35266934+dapplion@users.noreply.github.com>
This commit is contained in:
Eitan Seri-Levi
2026-02-10 13:52:52 -08:00
committed by GitHub
parent a1176e77be
commit 56eb81a5e0
12 changed files with 222 additions and 15 deletions
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10
beacon_node/src/cli.rs
View File

@@ -1404,6 +1404,16 @@ pub fn cli_app() -> Command {
.help_heading(FLAG_HEADER)
.display_order(0)
)
.arg(
Arg::new("ignore-ws-check")
.long("ignore-ws-check")
.help("Using this flag allows a node to run in a state that may expose it to long-range attacks. \
For more information please read this blog post: https://blog.ethereum.org/2014/11/25/proof-stake-learned-love-weak-subjectivity \
If you understand the risks, you can use this flag to disable the Weak Subjectivity check at startup.")
.action(ArgAction::SetTrue)
.help_heading(FLAG_HEADER)
.display_order(0)
)
.arg(
Arg::new("builder-fallback-skips")
.long("builder-fallback-skips")

2
beacon_node/src/config.rs
View File

@@ -780,6 +780,8 @@ pub fn get_config<E: EthSpec>(
client_config.chain.paranoid_block_proposal = cli_args.get_flag("paranoid-block-proposal");
client_config.chain.ignore_ws_check = cli_args.get_flag("ignore-ws-check");
/*
* Builder fallback configs.
*/

7
beacon_node/src/lib.rs
View File

@@ -22,14 +22,9 @@ use types::{ChainSpec, Epoch, EthSpec, ForkName};
pub type ProductionClient<E> =
Client<Witness<SystemTimeSlotClock, E, BeaconNodeBackend<E>, BeaconNodeBackend<E>>>;
/// The beacon node `Client` that will be used in production.
/// The beacon node `Client` that is used in production.
///
/// Generic over some `EthSpec`.
///
/// ## Notes:
///
/// Despite being titled `Production...`, this code is not ready for production. The name
/// demonstrates an intention, not a promise.
pub struct ProductionBeaconNode<E: EthSpec>(ProductionClient<E>);
impl<E: EthSpec> ProductionBeaconNode<E> {