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https://github.com/sigp/lighthouse.git
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303deb9969
## Issue Addressed N/A ## Proposed Changes - Removing a bunch of unnecessary references - Updated `Error::VariantError` to `Error::Variant` - There were additional enum variant lints that I ignored, because I thought our variant names were fine - removed `MonitoredValidator`'s `pubkey` field, because I couldn't find it used anywhere. It looks like we just use the string version of the pubkey (the `id` field) if there is no index ## Additional Info Co-authored-by: realbigsean <seananderson33@gmail.com>
70 lines
2.0 KiB
Rust
70 lines
2.0 KiB
Rust
use super::errors::{BlockOperationError, DepositInvalid};
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use crate::per_block_processing::signature_sets::deposit_pubkey_signature_message;
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use merkle_proof::verify_merkle_proof;
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use safe_arith::SafeArith;
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use tree_hash::TreeHash;
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use types::*;
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type Result<T> = std::result::Result<T, BlockOperationError<DepositInvalid>>;
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fn error(reason: DepositInvalid) -> BlockOperationError<DepositInvalid> {
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BlockOperationError::invalid(reason)
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}
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/// Verify `Deposit.pubkey` signed `Deposit.signature`.
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///
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/// Spec v0.12.1
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pub fn verify_deposit_signature(deposit_data: &DepositData, spec: &ChainSpec) -> Result<()> {
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let (public_key, signature, msg) = deposit_pubkey_signature_message(deposit_data, spec)
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.ok_or_else(|| error(DepositInvalid::BadBlsBytes))?;
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verify!(
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signature.verify(&public_key, msg),
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DepositInvalid::BadSignature
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);
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Ok(())
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}
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/// Returns a `Some(validator index)` if a pubkey already exists in the `validators`,
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/// otherwise returns `None`.
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///
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/// ## Errors
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///
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/// Errors if the state's `pubkey_cache` is not current.
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pub fn get_existing_validator_index<T: EthSpec>(
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state: &mut BeaconState<T>,
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pub_key: &PublicKeyBytes,
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) -> Result<Option<u64>> {
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let validator_index = state.get_validator_index(pub_key)?;
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Ok(validator_index.map(|idx| idx as u64))
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}
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/// Verify that a deposit is included in the state's eth1 deposit root.
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///
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/// The deposit index is provided as a parameter so we can check proofs
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/// before they're due to be processed, and in parallel.
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///
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/// Spec v0.12.1
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pub fn verify_deposit_merkle_proof<T: EthSpec>(
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state: &BeaconState<T>,
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deposit: &Deposit,
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deposit_index: u64,
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spec: &ChainSpec,
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) -> Result<()> {
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let leaf = deposit.data.tree_hash_root();
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verify!(
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verify_merkle_proof(
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leaf,
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&deposit.proof[..],
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spec.deposit_contract_tree_depth.safe_add(1)? as usize,
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deposit_index as usize,
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state.eth1_data().deposit_root,
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),
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DepositInvalid::BadMerkleProof
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);
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Ok(())
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}
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