Files
lighthouse/consensus/state_processing/src/per_block_processing.rs
Michael Sproul 67b9673191 Gloas payload attestation consensus (#8827)
- Implement `process_payload_attestation`
- Implement EF tests for payload attestations (allows simplification of handler now that we support all `operations` tests).
- Update the `BlockSignatureVerifier` to signature-verify payload attestations


Co-Authored-By: Michael Sproul <michael@sigmaprime.io>
2026-02-17 05:50:44 +00:00

692 lines
25 KiB
Rust

use crate::consensus_context::ConsensusContext;
use errors::{
BlockOperationError, BlockProcessingError, ExecutionPayloadBidInvalid, HeaderInvalid,
};
use rayon::prelude::*;
use safe_arith::{ArithError, SafeArith};
use signature_sets::{
block_proposal_signature_set, execution_payload_bid_signature_set,
get_builder_pubkey_from_state, get_pubkey_from_state, randao_signature_set,
};
use std::borrow::Cow;
use tree_hash::TreeHash;
use typenum::Unsigned;
use types::{consts::gloas::BUILDER_INDEX_SELF_BUILD, *};
pub use self::verify_attester_slashing::{
get_slashable_indices, get_slashable_indices_modular, verify_attester_slashing,
};
pub use self::verify_proposer_slashing::verify_proposer_slashing;
pub use altair::sync_committee::process_sync_aggregate;
pub use block_signature_verifier::{BlockSignatureVerifier, ParallelSignatureSets};
pub use is_valid_indexed_attestation::is_valid_indexed_attestation;
pub use is_valid_indexed_payload_attestation::is_valid_indexed_payload_attestation;
pub use process_operations::process_operations;
pub use verify_attestation::{
verify_attestation_for_block_inclusion, verify_attestation_for_state,
};
pub use verify_bls_to_execution_change::verify_bls_to_execution_change;
pub use verify_deposit::{
get_existing_validator_index, is_valid_deposit_signature, verify_deposit_merkle_proof,
};
pub use verify_exit::verify_exit;
pub use withdrawals::get_expected_withdrawals;
pub mod altair;
pub mod block_signature_verifier;
pub mod builder;
pub mod deneb;
pub mod errors;
mod is_valid_indexed_attestation;
mod is_valid_indexed_payload_attestation;
pub mod process_operations;
pub mod signature_sets;
pub mod tests;
mod verify_attestation;
mod verify_attester_slashing;
mod verify_bls_to_execution_change;
mod verify_deposit;
mod verify_exit;
mod verify_payload_attestation;
mod verify_proposer_slashing;
pub mod withdrawals;
use crate::common::update_progressive_balances_cache::{
initialize_progressive_balances_cache, update_progressive_balances_metrics,
};
use crate::epoch_cache::initialize_epoch_cache;
#[cfg(feature = "arbitrary-fuzz")]
use arbitrary::Arbitrary;
use tracing::instrument;
/// The strategy to be used when validating the block's signatures.
#[cfg_attr(feature = "arbitrary-fuzz", derive(Arbitrary))]
#[derive(PartialEq, Clone, Copy, Debug)]
pub enum BlockSignatureStrategy {
/// Do not validate any signature. Use with caution.
NoVerification,
/// Validate each signature individually, as its object is being processed.
VerifyIndividual,
/// Validate only the randao reveal signature.
VerifyRandao,
/// Verify all signatures in bulk at the beginning of block processing.
VerifyBulk,
}
/// The strategy to be used when validating the block's signatures.
#[cfg_attr(feature = "arbitrary-fuzz", derive(Arbitrary))]
#[derive(PartialEq, Clone, Copy)]
pub enum VerifySignatures {
/// Validate all signatures encountered.
True,
/// Do not validate any signature. Use with caution.
False,
}
impl VerifySignatures {
pub fn is_true(self) -> bool {
self == VerifySignatures::True
}
}
/// Control verification of the latest block header.
#[cfg_attr(feature = "arbitrary-fuzz", derive(Arbitrary))]
#[derive(PartialEq, Clone, Copy)]
pub enum VerifyBlockRoot {
True,
False,
}
/// Updates the state for a new block, whilst validating that the block is valid, optionally
/// checking the block proposer signature.
///
/// Returns `Ok(())` if the block is valid and the state was successfully updated. Otherwise
/// returns an error describing why the block was invalid or how the function failed to execute.
///
/// If `block_root` is `Some`, this root is used for verification of the proposer's signature. If it
/// is `None` the signing root is computed from scratch. This parameter only exists to avoid
/// re-calculating the root when it is already known. Note `block_root` should be equal to the
/// tree hash root of the block, NOT the signing root of the block. This function takes
/// care of mixing in the domain.
#[instrument(skip_all)]
pub fn per_block_processing<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &mut BeaconState<E>,
signed_block: &SignedBeaconBlock<E, Payload>,
block_signature_strategy: BlockSignatureStrategy,
verify_block_root: VerifyBlockRoot,
ctxt: &mut ConsensusContext<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
let block = signed_block.message();
// Verify that the `SignedBeaconBlock` instantiation matches the fork at `signed_block.slot()`.
signed_block
.fork_name(spec)
.map_err(BlockProcessingError::InconsistentBlockFork)?;
// Verify that the `BeaconState` instantiation matches the fork at `state.slot()`.
state
.fork_name(spec)
.map_err(BlockProcessingError::InconsistentStateFork)?;
// Build epoch cache if it hasn't already been built, or if it is no longer valid
initialize_epoch_cache(state, spec)?;
initialize_progressive_balances_cache(state, spec)?;
state.build_slashings_cache()?;
let verify_signatures = match block_signature_strategy {
BlockSignatureStrategy::VerifyBulk => {
// Verify all signatures in the block at once.
block_verify!(
BlockSignatureVerifier::verify_entire_block(
state,
|i| get_pubkey_from_state(state, i),
|pk_bytes| pk_bytes.decompress().ok().map(Cow::Owned),
signed_block,
ctxt,
spec
)
.is_ok(),
BlockProcessingError::BulkSignatureVerificationFailed
);
VerifySignatures::False
}
BlockSignatureStrategy::VerifyIndividual => VerifySignatures::True,
BlockSignatureStrategy::NoVerification => VerifySignatures::False,
BlockSignatureStrategy::VerifyRandao => VerifySignatures::False,
};
let proposer_index = process_block_header(
state,
block.temporary_block_header(),
verify_block_root,
ctxt,
spec,
)?;
if verify_signatures.is_true() {
verify_block_signature(state, signed_block, ctxt, spec)?;
}
let verify_randao = if let BlockSignatureStrategy::VerifyRandao = block_signature_strategy {
VerifySignatures::True
} else {
verify_signatures
};
// Ensure the current and previous epoch committee caches are built.
state.build_committee_cache(RelativeEpoch::Previous, spec)?;
state.build_committee_cache(RelativeEpoch::Current, spec)?;
// The call to the `process_execution_payload` must happen before the call to the
// `process_randao` as the former depends on the `randao_mix` computed with the reveal of the
// previous block.
if is_execution_enabled(state, block.body()) {
let body = block.body();
if state.fork_name_unchecked().gloas_enabled() {
withdrawals::gloas::process_withdrawals::<E>(state, spec)?;
process_execution_payload_bid(state, block, verify_signatures, spec)?;
} else {
if state.fork_name_unchecked().capella_enabled() {
withdrawals::capella_electra::process_withdrawals::<E, Payload>(
state,
body.execution_payload()?,
spec,
)?;
}
process_execution_payload::<E, Payload>(state, body, spec)?;
}
}
process_randao(state, block, verify_randao, ctxt, spec)?;
process_eth1_data(state, block.body().eth1_data())?;
process_operations(state, block.body(), verify_signatures, ctxt, spec)?;
if let Ok(sync_aggregate) = block.body().sync_aggregate() {
process_sync_aggregate(
state,
sync_aggregate,
proposer_index,
verify_signatures,
spec,
)?;
}
if is_progressive_balances_enabled(state) {
update_progressive_balances_metrics(state.progressive_balances_cache())?;
}
Ok(())
}
/// Processes the block header, returning the proposer index.
pub fn process_block_header<E: EthSpec>(
state: &mut BeaconState<E>,
block_header: BeaconBlockHeader,
verify_block_root: VerifyBlockRoot,
ctxt: &mut ConsensusContext<E>,
spec: &ChainSpec,
) -> Result<u64, BlockOperationError<HeaderInvalid>> {
// Verify that the slots match
verify!(
block_header.slot == state.slot(),
HeaderInvalid::StateSlotMismatch
);
// Verify that the block is newer than the latest block header
verify!(
block_header.slot > state.latest_block_header().slot,
HeaderInvalid::OlderThanLatestBlockHeader {
block_slot: block_header.slot,
latest_block_header_slot: state.latest_block_header().slot,
}
);
// Verify that proposer index is the correct index
let proposer_index = block_header.proposer_index;
let state_proposer_index = ctxt.get_proposer_index(state, spec)?;
verify!(
proposer_index == state_proposer_index,
HeaderInvalid::ProposerIndexMismatch {
block_proposer_index: proposer_index,
state_proposer_index,
}
);
if verify_block_root == VerifyBlockRoot::True {
let expected_previous_block_root = state.latest_block_header().tree_hash_root();
verify!(
block_header.parent_root == expected_previous_block_root,
HeaderInvalid::ParentBlockRootMismatch {
state: expected_previous_block_root,
block: block_header.parent_root,
}
);
}
state
.slashings_cache_mut()
.update_latest_block_slot(block_header.slot);
*state.latest_block_header_mut() = block_header;
// Verify proposer is not slashed
verify!(
!state.get_validator(proposer_index as usize)?.slashed,
HeaderInvalid::ProposerSlashed(proposer_index)
);
Ok(proposer_index)
}
/// Verifies the signature of a block.
///
/// Spec v0.12.1
pub fn verify_block_signature<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &BeaconState<E>,
block: &SignedBeaconBlock<E, Payload>,
ctxt: &mut ConsensusContext<E>,
spec: &ChainSpec,
) -> Result<(), BlockOperationError<HeaderInvalid>> {
let block_root = Some(ctxt.get_current_block_root(block)?);
let proposer_index = Some(ctxt.get_proposer_index(state, spec)?);
verify!(
block_proposal_signature_set(
state,
|i| get_pubkey_from_state(state, i),
block,
block_root,
proposer_index,
spec
)?
.verify(),
HeaderInvalid::ProposalSignatureInvalid
);
Ok(())
}
/// Verifies the `randao_reveal` against the block's proposer pubkey and updates
/// `state.latest_randao_mixes`.
pub fn process_randao<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &mut BeaconState<E>,
block: BeaconBlockRef<'_, E, Payload>,
verify_signatures: VerifySignatures,
ctxt: &mut ConsensusContext<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
if verify_signatures.is_true() {
// Verify RANDAO reveal signature.
let proposer_index = ctxt.get_proposer_index(state, spec)?;
block_verify!(
randao_signature_set(
state,
|i| get_pubkey_from_state(state, i),
block,
Some(proposer_index),
spec
)?
.verify(),
BlockProcessingError::RandaoSignatureInvalid
);
}
// Update the current epoch RANDAO mix.
state.update_randao_mix(state.current_epoch(), block.body().randao_reveal())?;
Ok(())
}
/// Update the `state.eth1_data_votes` based upon the `eth1_data` provided.
pub fn process_eth1_data<E: EthSpec>(
state: &mut BeaconState<E>,
eth1_data: &Eth1Data,
) -> Result<(), BeaconStateError> {
if let Some(new_eth1_data) = get_new_eth1_data(state, eth1_data)? {
*state.eth1_data_mut() = new_eth1_data;
}
state.eth1_data_votes_mut().push(eth1_data.clone())?;
Ok(())
}
/// Returns `Ok(Some(eth1_data))` if adding the given `eth1_data` to `state.eth1_data_votes` would
/// result in a change to `state.eth1_data`.
pub fn get_new_eth1_data<E: EthSpec>(
state: &BeaconState<E>,
eth1_data: &Eth1Data,
) -> Result<Option<Eth1Data>, ArithError> {
let num_votes = state
.eth1_data_votes()
.iter()
.filter(|vote| *vote == eth1_data)
.count();
// The +1 is to account for the `eth1_data` supplied to the function.
if num_votes.safe_add(1)?.safe_mul(2)? > E::SlotsPerEth1VotingPeriod::to_usize() {
Ok(Some(eth1_data.clone()))
} else {
Ok(None)
}
}
/// Performs *partial* verification of the `payload`.
///
/// The verification is partial, since the execution payload is not verified against an execution
/// engine. That is expected to be performed by an upstream function.
///
/// ## Specification
///
/// Contains a partial set of checks from the `process_execution_payload` function:
///
/// https://github.com/ethereum/consensus-specs/blob/v1.1.5/specs/merge/beacon-chain.md#process_execution_payload
pub fn partially_verify_execution_payload<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &BeaconState<E>,
block_slot: Slot,
body: BeaconBlockBodyRef<E, Payload>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
let payload = body.execution_payload()?;
if is_merge_transition_complete(state) {
block_verify!(
payload.parent_hash() == state.latest_execution_payload_header()?.block_hash(),
BlockProcessingError::ExecutionHashChainIncontiguous {
expected: state.latest_execution_payload_header()?.block_hash(),
found: payload.parent_hash(),
}
);
}
block_verify!(
payload.prev_randao() == *state.get_randao_mix(state.current_epoch())?,
BlockProcessingError::ExecutionRandaoMismatch {
expected: *state.get_randao_mix(state.current_epoch())?,
found: payload.prev_randao(),
}
);
let timestamp = compute_timestamp_at_slot(state, block_slot, spec)?;
block_verify!(
payload.timestamp() == timestamp,
BlockProcessingError::ExecutionInvalidTimestamp {
expected: timestamp,
found: payload.timestamp(),
}
);
if let Ok(blob_commitments) = body.blob_kzg_commitments() {
// Verify commitments are under the limit.
let max_blobs_per_block =
spec.max_blobs_per_block(block_slot.epoch(E::slots_per_epoch())) as usize;
block_verify!(
blob_commitments.len() <= max_blobs_per_block,
BlockProcessingError::ExecutionInvalidBlobsLen {
max: max_blobs_per_block,
actual: blob_commitments.len(),
}
);
}
Ok(())
}
/// Calls `partially_verify_execution_payload` and then updates the payload header in the `state`.
///
/// ## Specification
///
/// Partially equivalent to the `process_execution_payload` function:
///
/// https://github.com/ethereum/consensus-specs/blob/v1.1.5/specs/merge/beacon-chain.md#process_execution_payload
pub fn process_execution_payload<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &mut BeaconState<E>,
body: BeaconBlockBodyRef<E, Payload>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
partially_verify_execution_payload::<E, Payload>(state, state.slot(), body, spec)?;
let payload = body.execution_payload()?;
match state.latest_execution_payload_header_mut()? {
ExecutionPayloadHeaderRefMut::Bellatrix(header_mut) => {
match payload.to_execution_payload_header() {
ExecutionPayloadHeader::Bellatrix(header) => *header_mut = header,
_ => return Err(BlockProcessingError::IncorrectStateType),
}
}
ExecutionPayloadHeaderRefMut::Capella(header_mut) => {
match payload.to_execution_payload_header() {
ExecutionPayloadHeader::Capella(header) => *header_mut = header,
_ => return Err(BlockProcessingError::IncorrectStateType),
}
}
ExecutionPayloadHeaderRefMut::Deneb(header_mut) => {
match payload.to_execution_payload_header() {
ExecutionPayloadHeader::Deneb(header) => *header_mut = header,
_ => return Err(BlockProcessingError::IncorrectStateType),
}
}
ExecutionPayloadHeaderRefMut::Electra(header_mut) => {
match payload.to_execution_payload_header() {
ExecutionPayloadHeader::Electra(header) => *header_mut = header,
_ => return Err(BlockProcessingError::IncorrectStateType),
}
}
ExecutionPayloadHeaderRefMut::Fulu(header_mut) => {
match payload.to_execution_payload_header() {
ExecutionPayloadHeader::Fulu(header) => *header_mut = header,
_ => return Err(BlockProcessingError::IncorrectStateType),
}
}
}
Ok(())
}
/// These functions will definitely be called before the merge. Their entire purpose is to check if
/// the merge has happened or if we're on the transition block. Thus we don't want to propagate
/// errors from the `BeaconState` being an earlier variant than `BeaconStateBellatrix` as we'd have to
/// repeatedly write code to treat these errors as false.
/// https://github.com/ethereum/consensus-specs/blob/dev/specs/bellatrix/beacon-chain.md#is_merge_transition_complete
pub fn is_merge_transition_complete<E: EthSpec>(state: &BeaconState<E>) -> bool {
// TODO(EIP7732): check this cause potuz modified this function for god knows what reason
if state.fork_name_unchecked().capella_enabled() {
true
} else if state.fork_name_unchecked().bellatrix_enabled() {
// We must check defaultness against the payload header with 0x0 roots, as that's what's meant
// by `ExecutionPayloadHeader()` in the spec.
state
.latest_execution_payload_header()
.map(|header| !header.is_default_with_zero_roots())
.unwrap_or(false)
} else {
false
}
}
/// https://github.com/ethereum/consensus-specs/blob/dev/specs/bellatrix/beacon-chain.md#is_merge_transition_block
pub fn is_merge_transition_block<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &BeaconState<E>,
body: BeaconBlockBodyRef<E, Payload>,
) -> bool {
// For execution payloads in blocks (which may be headers) we must check defaultness against
// the payload with `transactions_root` equal to the tree hash of the empty list.
body.execution_payload()
.map(|payload| {
!is_merge_transition_complete(state) && !payload.is_default_with_empty_roots()
})
.unwrap_or(false)
}
/// https://github.com/ethereum/consensus-specs/blob/dev/specs/bellatrix/beacon-chain.md#is_execution_enabled
pub fn is_execution_enabled<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &BeaconState<E>,
body: BeaconBlockBodyRef<E, Payload>,
) -> bool {
is_merge_transition_block(state, body) || is_merge_transition_complete(state)
}
/// https://github.com/ethereum/consensus-specs/blob/dev/specs/bellatrix/beacon-chain.md#compute_timestamp_at_slot
pub fn compute_timestamp_at_slot<E: EthSpec>(
state: &BeaconState<E>,
block_slot: Slot,
spec: &ChainSpec,
) -> Result<u64, ArithError> {
let slots_since_genesis = block_slot.as_u64().safe_sub(spec.genesis_slot.as_u64())?;
slots_since_genesis
.safe_mul(spec.get_slot_duration().as_secs())
.and_then(|since_genesis| state.genesis_time().safe_add(since_genesis))
}
pub fn can_builder_cover_bid<E: EthSpec>(
state: &BeaconState<E>,
builder_index: BuilderIndex,
builder: &Builder,
bid_amount: u64,
spec: &ChainSpec,
) -> Result<bool, BlockProcessingError> {
let builder_balance = builder.balance;
let pending_withdrawals_amount =
state.get_pending_balance_to_withdraw_for_builder(builder_index)?;
let min_balance = spec
.min_deposit_amount
.safe_add(pending_withdrawals_amount)?;
if builder_balance < min_balance {
Ok(false)
} else {
Ok(builder_balance.safe_sub(min_balance)? >= bid_amount)
}
}
pub fn process_execution_payload_bid<E: EthSpec, Payload: AbstractExecPayload<E>>(
state: &mut BeaconState<E>,
block: BeaconBlockRef<'_, E, Payload>,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
// Verify the bid signature
let signed_bid = block.body().signed_execution_payload_bid()?;
let bid = &signed_bid.message;
let amount = bid.value;
let builder_index = bid.builder_index;
// For self-builds, amount must be zero regardless of withdrawal credential prefix
if builder_index == BUILDER_INDEX_SELF_BUILD {
block_verify!(
amount == 0,
ExecutionPayloadBidInvalid::SelfBuildNonZeroAmount.into()
);
block_verify!(
signed_bid.signature.is_infinity(),
ExecutionPayloadBidInvalid::BadSignature.into()
);
} else {
let builder = state.get_builder(builder_index)?;
// Verify that the builder is active
block_verify!(
builder.is_active_at_finalized_epoch(state.finalized_checkpoint().epoch, spec),
ExecutionPayloadBidInvalid::BuilderNotActive(builder_index).into()
);
// Verify that the builder has funds to cover the bid
block_verify!(
can_builder_cover_bid(state, builder_index, builder, amount, spec)?,
ExecutionPayloadBidInvalid::InsufficientBalance {
builder_index,
builder_balance: builder.balance,
bid_value: amount,
}
.into()
);
if verify_signatures.is_true() {
block_verify!(
// We know this is NOT a self-build, so there MUST be a signature set (func does not
// return None).
execution_payload_bid_signature_set(
state,
|i| get_builder_pubkey_from_state(state, i),
signed_bid,
spec
)?
.ok_or(ExecutionPayloadBidInvalid::BadSignature)?
.verify(),
ExecutionPayloadBidInvalid::BadSignature.into()
);
}
}
// Verify commitments are under limit
let max_blobs_per_block = spec.max_blobs_per_block(state.current_epoch()) as usize;
block_verify!(
bid.blob_kzg_commitments.len() <= max_blobs_per_block,
ExecutionPayloadBidInvalid::ExcessBlobCommitments {
max: max_blobs_per_block,
bid: bid.blob_kzg_commitments.len(),
}
.into()
);
// Verify that the bid is for the current slot
block_verify!(
bid.slot == block.slot(),
ExecutionPayloadBidInvalid::SlotMismatch {
bid_slot: bid.slot,
block_slot: block.slot(),
}
.into()
);
// Verify that the bid is for the right parent block
let latest_block_hash = state.latest_block_hash()?;
block_verify!(
bid.parent_block_hash == *latest_block_hash,
ExecutionPayloadBidInvalid::ParentBlockHashMismatch {
state_block_hash: *latest_block_hash,
bid_parent_hash: bid.parent_block_hash,
}
.into()
);
block_verify!(
bid.parent_block_root == block.parent_root(),
ExecutionPayloadBidInvalid::ParentBlockRootMismatch {
block_parent_root: block.parent_root(),
bid_parent_root: bid.parent_block_root,
}
.into()
);
let expected_randao = *state.get_randao_mix(state.current_epoch())?;
block_verify!(
bid.prev_randao == expected_randao,
ExecutionPayloadBidInvalid::PrevRandaoMismatch {
expected: expected_randao,
bid: bid.prev_randao,
}
.into()
);
// Record the pending payment if there is some payment
if amount > 0 {
let pending_payment = BuilderPendingPayment {
weight: 0,
withdrawal: BuilderPendingWithdrawal {
fee_recipient: bid.fee_recipient,
amount,
builder_index,
},
};
let payment_index = E::SlotsPerEpoch::to_usize()
.safe_add(bid.slot.as_usize().safe_rem(E::SlotsPerEpoch::to_usize())?)?;
*state
.builder_pending_payments_mut()?
.get_mut(payment_index)
.ok_or(BlockProcessingError::BeaconStateError(
BeaconStateError::InvalidBuilderPendingPaymentsIndex(payment_index),
))? = pending_payment;
}
// Cache the execution bid
*state.latest_execution_payload_bid_mut()? = bid.clone();
Ok(())
}