@lodestar/state-transition/lib/signatureSets/voluntaryExits.js

Beacon Chain state transition function and utils

import { ssz } from "@lodestar/types";
import { SignatureSetType, computeSigningRoot, computeStartSlotAtEpoch, verifySignatureSet, } from "../util/index.js";
export function verifyVoluntaryExitSignature(state, signedVoluntaryExit) {
    return verifySignatureSet(getVoluntaryExitSignatureSet(state, signedVoluntaryExit));
}
/**
 * Extract signatures to allow validating all block signatures at once
 */
export function getVoluntaryExitSignatureSet(state, signedVoluntaryExit) {
    const { epochCtx } = state;
    const slot = computeStartSlotAtEpoch(signedVoluntaryExit.message.epoch);
    const domain = state.config.getDomainForVoluntaryExit(state.slot, slot);
    return {
        type: SignatureSetType.single,
        pubkey: epochCtx.index2pubkey[signedVoluntaryExit.message.validatorIndex],
        signingRoot: computeSigningRoot(ssz.phase0.VoluntaryExit, signedVoluntaryExit.message, domain),
        signature: signedVoluntaryExit.signature,
    };
}
export function getVoluntaryExitsSignatureSets(state, signedBlock) {
    return signedBlock.message.body.voluntaryExits.map((voluntaryExit) => getVoluntaryExitSignatureSet(state, voluntaryExit));
}
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