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Explicitly pass epoch message sig to getDomain #2616

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Jun 2, 2021
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@@ -1,5 +1,5 @@
import {allForks} from "@chainsafe/lodestar-types";
import {computeSigningRoot, getDomain} from "../../util";
import {computeEpochAtSlot, computeSigningRoot, getDomain} from "../../util";
import {ISignatureSet, SignatureSetType, verifySignatureSet} from "../../util/signatureSets";
import {CachedBeaconState} from "../util";

Expand All @@ -16,7 +16,8 @@ export function getProposerSignatureSet(
signedBlock: allForks.SignedBeaconBlock
): ISignatureSet {
const {config, epochCtx} = state;
const domain = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER);
const epochSig = computeEpochAtSlot(config, signedBlock.message.slot);
const domain = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER, epochSig);

return {
type: SignatureSetType.single,
Expand Down
Expand Up @@ -15,8 +15,8 @@ export function getProposerSlashingSignatureSets(

return [proposerSlashing.signedHeader1, proposerSlashing.signedHeader2].map(
(signedHeader): ISignatureSet => {
const epoch = computeEpochAtSlot(config, signedHeader.message.slot);
const domain = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER, epoch);
const epochSig = computeEpochAtSlot(config, signedHeader.message.slot);
const domain = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER, epochSig);
const beaconBlockHeaderType = config.types.phase0.BeaconBlockHeader;

return {
Expand Down
Expand Up @@ -26,7 +26,7 @@ export function getRandaoRevealSignatureSet(
const {config, epochCtx} = state;
// should not get epoch from epochCtx
const epoch = computeEpochAtSlot(config, block.slot);
const domain = getDomain(config, state, config.params.DOMAIN_RANDAO);
const domain = getDomain(config, state, config.params.DOMAIN_RANDAO, epoch);

return {
type: SignatureSetType.single,
Expand Down
Expand Up @@ -31,12 +31,8 @@ export function processSyncCommittee(
)
: committeeIndices.filter((index) => !!aggregate.syncCommitteeBits[index]);
const participantPubkeys = participantIndices.map((validatorIndex) => state.validators[validatorIndex].pubkey);
const domain = getDomain(
config,
state,
config.params.DOMAIN_SYNC_COMMITTEE,
computeEpochAtSlot(config, previousSlot)
);
const epochSig = computeEpochAtSlot(config, previousSlot);
const domain = getDomain(config, state, config.params.DOMAIN_SYNC_COMMITTEE, epochSig);
const signingRoot = computeSigningRoot(
config,
config.types.Root,
Expand Down
Expand Up @@ -17,19 +17,19 @@ export function processRandao(
body: phase0.BeaconBlockBody,
verifySignature = true
): void {
const currentEpoch = getCurrentEpoch(config, state);
const stateEpoch = getCurrentEpoch(config, state);
const proposer = state.validators[getBeaconProposerIndex(config, state)];
const domain = getDomain(config, state, config.params.DOMAIN_RANDAO);
const signingRoot = computeSigningRoot(config, config.types.Epoch, currentEpoch, domain);
const domain = getDomain(config, state, config.params.DOMAIN_RANDAO, stateEpoch);
const signingRoot = computeSigningRoot(config, config.types.Epoch, stateEpoch, domain);
// Verify RANDAO reveal
assert.true(
!verifySignature ||
bls.verify(proposer.pubkey.valueOf() as Uint8Array, signingRoot, body.randaoReveal.valueOf() as Uint8Array),
"Invalid RANDAO reveal"
);
// Mix it in
state.randaoMixes[currentEpoch % config.params.EPOCHS_PER_HISTORICAL_VECTOR] = xor(
Buffer.from(getRandaoMix(config, state, currentEpoch) as Uint8Array),
state.randaoMixes[stateEpoch % config.params.EPOCHS_PER_HISTORICAL_VECTOR] = xor(
Buffer.from(getRandaoMix(config, state, stateEpoch) as Uint8Array),
Buffer.from(hash(body.randaoReveal.valueOf() as Uint8Array))
);
}
4 changes: 3 additions & 1 deletion packages/beacon-state-transition/src/util/block.ts
Expand Up @@ -2,14 +2,16 @@ import bls from "@chainsafe/bls";
import {IBeaconConfig} from "@chainsafe/lodestar-config";
import {allForks} from "@chainsafe/lodestar-types";
import {getDomain} from "./domain";
import {computeEpochAtSlot} from "./epoch";
import {computeSigningRoot} from "./signingRoot";

export function verifyBlockSignature(
config: IBeaconConfig,
state: allForks.BeaconState,
signedBlock: allForks.SignedBeaconBlock
): boolean {
const domain = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER);
const epochSig = computeEpochAtSlot(config, signedBlock.message.slot);
const domain = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER, epochSig);
const blockType = config.getForkTypes(signedBlock.message.slot).BeaconBlock;
const signingRoot = computeSigningRoot(config, blockType, signedBlock.message, domain);
const proposer = state.validators[signedBlock.message.proposerIndex];
Expand Down
6 changes: 2 additions & 4 deletions packages/beacon-state-transition/src/util/domain.ts
Expand Up @@ -6,7 +6,6 @@ import {IBeaconConfig} from "@chainsafe/lodestar-config";

import {ZERO_HASH} from "../constants";

import {getCurrentEpoch} from "./epoch";
import {computeForkDataRoot} from "./fork";

/**
Expand Down Expand Up @@ -39,9 +38,8 @@ export function getDomain(
config: IBeaconConfig,
state: allForks.BeaconState,
domainType: DomainType,
messageEpoch: Epoch | null = null
messageEpoch: Epoch
): Buffer {
const epoch = messageEpoch ?? getCurrentEpoch(config, state);
const forkVersion = getForkVersion(state.fork, epoch);
const forkVersion = getForkVersion(state.fork, messageEpoch);
return computeDomain(config, domainType, forkVersion, state.genesisValidatorsRoot);
}
20 changes: 7 additions & 13 deletions packages/beacon-state-transition/src/util/validatorStatus.ts
Expand Up @@ -130,17 +130,14 @@ export function isValidProposerSlashing(
if (!verifySignatures) {
return true;
}
const domain = getDomain(
config,
state,
config.params.DOMAIN_BEACON_PROPOSER,
computeEpochAtSlot(config, header1.slot)
);

const epochSig1 = computeEpochAtSlot(config, header1.slot);
const domain1 = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER, epochSig1);
const signingRoot = computeSigningRoot(
config,
config.types.phase0.BeaconBlockHeader,
proposerSlashing.signedHeader1.message,
domain
domain1
);
const proposalData1Verified = bls.verify(
proposer.pubkey.valueOf() as Uint8Array,
Expand All @@ -150,12 +147,9 @@ export function isValidProposerSlashing(
if (!proposalData1Verified) {
return false;
}
const domain2 = getDomain(
config,
state,
config.params.DOMAIN_BEACON_PROPOSER,
computeEpochAtSlot(config, header2.slot)
);

const epochSig2 = computeEpochAtSlot(config, header2.slot);
const domain2 = getDomain(config, state, config.params.DOMAIN_BEACON_PROPOSER, epochSig2);
const signingRoot2 = computeSigningRoot(
config,
config.types.phase0.BeaconBlockHeader,
Expand Down
Expand Up @@ -13,8 +13,8 @@ export function getContributionAndProofSignatureSet(
signedContributionAndProof: altair.SignedContributionAndProof
): ISignatureSet {
const {config, epochCtx} = state;
const msgEpoch = computeEpochAtSlot(config, signedContributionAndProof.message.contribution.slot);
const domain = getDomain(config, state, config.params.DOMAIN_CONTRIBUTION_AND_PROOF, msgEpoch);
const epochSig = computeEpochAtSlot(config, signedContributionAndProof.message.contribution.slot);
const domain = getDomain(config, state, config.params.DOMAIN_CONTRIBUTION_AND_PROOF, epochSig);
const signingData = signedContributionAndProof.message;
return {
type: SignatureSetType.single,
Expand Down
Expand Up @@ -16,8 +16,8 @@ export function getSelectionProofSignatureSet(
aggregator: PublicKey,
aggregateAndProof: phase0.SignedAggregateAndProof
): ISignatureSet {
const epoch = computeEpochAtSlot(config, slot);
const selectionProofDomain = getDomain(config, state, config.params.DOMAIN_SELECTION_PROOF, epoch);
const epochSig = computeEpochAtSlot(config, slot);
const selectionProofDomain = getDomain(config, state, config.params.DOMAIN_SELECTION_PROOF, epochSig);

return {
type: SignatureSetType.single,
Expand Down
Expand Up @@ -13,8 +13,8 @@ export function getSyncCommitteeSignatureSet(
syncCommittee: altair.SyncCommitteeSignature
): ISignatureSet {
const {config} = state;
const msgEpoch = computeEpochAtSlot(config, syncCommittee.slot);
const domain = getDomain(config, state, config.params.DOMAIN_SYNC_COMMITTEE, msgEpoch);
const epochSig = computeEpochAtSlot(config, syncCommittee.slot);
const domain = getDomain(config, state, config.params.DOMAIN_SYNC_COMMITTEE, epochSig);

return {
type: SignatureSetType.single,
Expand Down
Expand Up @@ -16,8 +16,8 @@ export function getSyncCommitteeContributionSignatureSet(
contribution: altair.SyncCommitteeContribution
): ISignatureSet {
const {config} = state;
const currentEpoch = computeEpochAtSlot(config, contribution.slot);
const domain = getDomain(config, state, config.params.DOMAIN_SYNC_COMMITTEE, currentEpoch);
const epochSig = computeEpochAtSlot(config, contribution.slot);
const domain = getDomain(config, state, config.params.DOMAIN_SYNC_COMMITTEE, epochSig);
return {
type: SignatureSetType.aggregate,
pubkeys: getContributionPubkeys(state, contribution),
Expand Down
Expand Up @@ -14,8 +14,8 @@ export function getSyncCommitteeSelectionProofSignatureSet(
): ISignatureSet {
const {config, epochCtx} = state;
const slot = contributionAndProof.contribution.slot;
const epoch = computeEpochAtSlot(config, slot);
const domain = getDomain(config, state, config.params.DOMAIN_SYNC_COMMITTEE_SELECTION_PROOF, epoch);
const epochSig = computeEpochAtSlot(config, slot);
const domain = getDomain(config, state, config.params.DOMAIN_SYNC_COMMITTEE_SELECTION_PROOF, epochSig);
const signingData: altair.SyncAggregatorSelectionData = {
slot,
subCommitteeIndex: contributionAndProof.contribution.subCommitteeIndex,
Expand Down