fixed_bytes crate

Author: eserilev

Cargo.lock

@@ -205,6 +205,7 @@ eth2_network_config = { path = "common/eth2_network_config" }
 eth2_wallet = { path = "crypto/eth2_wallet" }
 execution_layer = { path = "beacon_node/execution_layer" }
 filesystem = { path = "common/filesystem" }
+fixed_bytes = { path = "consensus/fixed_bytes"}
 fork_choice = { path = "consensus/fork_choice" }
 genesis = { path = "beacon_node/genesis" }
 gossipsub = { path = "beacon_node/lighthouse_network/gossipsub/" }

Cargo.toml

@@ -45,3 +45,4 @@ http_api = { workspace = true }
 unused_port = { workspace = true }
 strum = { workspace = true }
 account_utils = { workspace = true }
+fixed_bytes = { workspace = true }

beacon_node/Cargo.toml

@@ -35,6 +35,7 @@ ethereum_serde_utils = { workspace = true }
 ethereum_ssz = { workspace = true }
 ethereum_ssz_derive = { workspace = true }
 execution_layer = { workspace = true }
+fixed_bytes = { workspace = true }
 fork_choice = { workspace = true }
 futures = { workspace = true }
 genesis = { workspace = true }

beacon_node/beacon_chain/Cargo.toml

@@ -41,6 +41,7 @@ use crate::{
     BeaconChain, BeaconChainError, BeaconChainTypes,
 };
 use bls::verify_signature_sets;
+use fixed_bytes::Hash256;
 use itertools::Itertools;
 use proto_array::Block as ProtoBlock;
 use slog::debug;
@@ -61,8 +62,8 @@ use strum::AsRefStr;
 use tree_hash::TreeHash;
 use types::{
     Attestation, AttestationRef, BeaconCommittee, BeaconStateError::NoCommitteeFound, ChainSpec,
-    CommitteeIndex, Epoch, EthSpec, Hash256, IndexedAttestation, SelectionProof,
-    SignedAggregateAndProof, Slot, SubnetId,
+    CommitteeIndex, Epoch, EthSpec, IndexedAttestation, SelectionProof, SignedAggregateAndProof,
+    Slot, SubnetId,
 };
 
 pub use batch::{batch_verify_aggregated_attestations, batch_verify_unaggregated_attestations};

beacon_node/beacon_chain/src/attestation_verification.rs

@@ -10,6 +10,7 @@
 //! and penalties can be computed and the `state.current_justified_checkpoint` can be updated.
 
 use crate::{BeaconChain, BeaconChainError, BeaconChainTypes};
+use fixed_bytes::{FixedBytesExtended, Hash256};
 use parking_lot::RwLock;
 use state_processing::state_advance::{partial_state_advance, Error as StateAdvanceError};
 use std::collections::HashMap;
@@ -19,8 +20,7 @@ use types::{
     beacon_state::{
         compute_committee_index_in_epoch, compute_committee_range_in_epoch, epoch_committee_count,
     },
-    BeaconState, BeaconStateError, ChainSpec, Checkpoint, Epoch, EthSpec, FixedBytesExtended,
-    Hash256, RelativeEpoch, Slot,
+    BeaconState, BeaconStateError, ChainSpec, Checkpoint, Epoch, EthSpec, RelativeEpoch, Slot,
 };
 
 type JustifiedCheckpoint = Checkpoint;

beacon_node/beacon_chain/src/attester_cache.rs

@@ -1,5 +1,6 @@
 use crate::{BeaconChain, BeaconChainError, BeaconChainTypes};
 use eth2::lighthouse::StandardBlockReward;
+use fixed_bytes::Hash256;
 use operation_pool::RewardCache;
 use safe_arith::SafeArith;
 use slog::error;
@@ -14,7 +15,7 @@ use store::{
     consts::altair::{PARTICIPATION_FLAG_WEIGHTS, PROPOSER_WEIGHT, WEIGHT_DENOMINATOR},
     RelativeEpoch,
 };
-use types::{AbstractExecPayload, BeaconBlockRef, BeaconState, BeaconStateError, Hash256};
+use types::{AbstractExecPayload, BeaconBlockRef, BeaconState, BeaconStateError};
 
 type BeaconBlockSubRewardValue = u64;