Examples with SYNC_COMMITTEE_SUBNET_COUNT tech.pegasys.teku.spec.constants.NetworkConstants.SYNC_COMMITTEE_SUBNET_COUNT used on opensource projects

Example 1 with SYNC_COMMITTEE_SUBNET_COUNT

use of tech.pegasys.teku.spec.constants.NetworkConstants.SYNC_COMMITTEE_SUBNET_COUNT in project teku by ConsenSys.

the class SyncCommitteeContributionPoolTest method assertSyncAggregateFromContribution.

private void assertSyncAggregateFromContribution(final SyncCommitteeContribution contribution, final SyncAggregate result) {
    final int subcommitteeIndexOffset = config.getSyncCommitteeSize() / SYNC_COMMITTEE_SUBNET_COUNT * contribution.getSubcommitteeIndex().intValue();
    final IntList expectedParticipants = IntArrayList.toList(contribution.getAggregationBits().getAllSetBits().intStream().map(index -> subcommitteeIndexOffset + index));
    assertThatSyncAggregate(result).hasSyncCommitteeBits(expectedParticipants).hasSignature(contribution.getSignature());
}

Example 2 with SYNC_COMMITTEE_SUBNET_COUNT

use of tech.pegasys.teku.spec.constants.NetworkConstants.SYNC_COMMITTEE_SUBNET_COUNT in project teku by ConsenSys.

the class SignedContributionAndProofValidator method validateWithState.

private SafeFuture<InternalValidationResult> validateWithState(final SignedContributionAndProof proof, final ContributionAndProof contributionAndProof, final SyncCommitteeContribution contribution, final SyncCommitteeUtil syncCommitteeUtil, final UniquenessKey uniquenessKey, final BeaconStateAltair state) {
    final BeaconStateAccessors beaconStateAccessors = spec.atSlot(contribution.getSlot()).beaconStateAccessors();
    final Optional<BLSPublicKey> aggregatorPublicKey = beaconStateAccessors.getValidatorPubKey(state, contributionAndProof.getAggregatorIndex());
    if (aggregatorPublicKey.isEmpty()) {
        return futureFailureResult("Rejecting proof because aggregator index %s is an unknown validator", contributionAndProof.getAggregatorIndex());
    }
    final UInt64 contributionEpoch = syncCommitteeUtil.getEpochForDutiesAtSlot(contribution.getSlot());
    // state.current_sync_committee.pubkeys.
    if (!isInSyncSubcommittee(syncCommitteeUtil, contribution, state, contributionEpoch, contributionAndProof.getAggregatorIndex())) {
        return futureFailureResult("Rejecting proof because aggregator index %s is not in the current sync subcommittee", contributionAndProof.getAggregatorIndex());
    }
    // contribution.slot, contribution_and_proof.selection_proof) returns True.
    if (!syncCommitteeUtil.isSyncCommitteeAggregator(contributionAndProof.getSelectionProof())) {
        return futureFailureResult("Rejecting proof because selection proof %s is not an aggregator", contributionAndProof.getSelectionProof());
    }
    final AsyncBatchBLSSignatureVerifier signatureVerifier = new AsyncBatchBLSSignatureVerifier(this.signatureVerifier);
    // [REJECT] The contribution_and_proof.selection_proof is a valid signature of the
    // contribution.slot by the validator with index
    // contribution_and_proof.aggregator_index.
    final Bytes signingRoot = syncCommitteeUtil.getSyncAggregatorSelectionDataSigningRoot(syncCommitteeUtil.createSyncAggregatorSelectionData(contribution.getSlot(), contribution.getSubcommitteeIndex()), state.getForkInfo());
    if (!signatureVerifier.verify(aggregatorPublicKey.get(), signingRoot, contributionAndProof.getSelectionProof())) {
        return futureFailureResult("Rejecting proof at slot %s for subcommittee index %s because selection proof is invalid", contribution.getSlot(), contribution.getSubcommitteeIndex());
    }
    // valid.
    if (!signatureVerifier.verify(aggregatorPublicKey.get(), syncCommitteeUtil.getContributionAndProofSigningRoot(state, contributionAndProof), proof.getSignature())) {
        return futureFailureResult("Rejecting proof %s because aggregator signature is invalid", proof.getSignature());
    }
    final SpecConfigAltair config = SpecConfigAltair.required(spec.getSpecConfig(contributionEpoch));
    final SyncCommittee syncCommittee = syncCommitteeUtil.getSyncCommittee(state, contributionEpoch);
    final int subcommitteeSize = config.getSyncCommitteeSize() / SYNC_COMMITTEE_SUBNET_COUNT;
    // [REJECT] The aggregate signature is valid for the message beacon_block_root and
    // aggregate pubkey derived from the participation info in aggregation_bits for the
    // subcommittee specified by the subcommittee_index.
    final List<BLSPublicKey> contributorPublicKeys = contribution.getAggregationBits().streamAllSetBits().mapToObj(participantIndex -> getParticipantPublicKey(state, syncCommittee, contribution, subcommitteeSize, participantIndex)).collect(Collectors.toList());
    if (!signatureVerifier.verify(contributorPublicKeys, syncCommitteeUtil.getSyncCommitteeMessageSigningRoot(contribution.getBeaconBlockRoot(), contributionEpoch, state.getForkInfo()), contribution.getSignature())) {
        return futureFailureResult("Rejecting proof because aggregate signature %s is invalid", contribution.getSignature());
    }
    return signatureVerifier.batchVerify().thenApply(signatureValid -> {
        if (!signatureValid) {
            return failureResult("Rejecting proof with signature %s because batch signature check failed", contribution.getSignature());
        }
        if (!seenIndices.add(uniquenessKey)) {
            // Got added by another thread while we were validating it
            return IGNORE;
        }
        return ACCEPT;
    });
}