@lodestar/beacon-node
Version:
A Typescript implementation of the beacon chain
20 lines • 1.17 kB
JavaScript
import { DOMAIN_SELECTION_PROOF } from "@lodestar/params";
import { SignatureSetType, computeSigningRoot } from "@lodestar/state-transition";
import { ssz } from "@lodestar/types";
export function getSelectionProofSigningRoot(config, slot) {
// previously, we call `const selectionProofDomain = config.getDomain(state.slot, DOMAIN_SELECTION_PROOF, slot)`
// at fork boundary, it's required to dial to target epoch https://github.com/ChainSafe/lodestar/blob/v1.11.3/packages/beacon-node/src/chain/validation/attestation.ts#L573
// instead of that, just use the fork of slot in the attestation data
const fork = config.getForkName(slot);
const selectionProofDomain = config.getDomainAtFork(fork, DOMAIN_SELECTION_PROOF);
return computeSigningRoot(ssz.Slot, slot, selectionProofDomain);
}
export function getSelectionProofSignatureSet(config, slot, aggregatorIndex, aggregateAndProof) {
return {
type: SignatureSetType.indexed,
index: aggregatorIndex,
signingRoot: getSelectionProofSigningRoot(config, slot),
signature: aggregateAndProof.message.selectionProof,
};
}
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