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

Beacon Chain state transition function and utils

import { DOMAIN_BEACON_PROPOSER } from "@lodestar/params";
import { isBlindedBeaconBlock, ssz } from "@lodestar/types";
import { computeSigningRoot } from "../util/index.js";
import { SignatureSetType, verifySignatureSet } from "../util/signatureSets.js";
export function verifyProposerSignature(state, signedBlock) {
    const signatureSet = getBlockProposerSignatureSet(state, signedBlock);
    return verifySignatureSet(signatureSet);
}
export function getBlockProposerSignatureSet(state, signedBlock) {
    const { config, epochCtx } = state;
    const domain = config.getDomain(state.slot, DOMAIN_BEACON_PROPOSER, signedBlock.message.slot);
    const blockType = isBlindedBeaconBlock(signedBlock.message)
        ? config.getPostBellatrixForkTypes(signedBlock.message.slot).BlindedBeaconBlock
        : config.getForkTypes(signedBlock.message.slot).BeaconBlock;
    return {
        type: SignatureSetType.single,
        pubkey: epochCtx.index2pubkey[signedBlock.message.proposerIndex],
        signingRoot: computeSigningRoot(blockType, signedBlock.message, domain),
        signature: signedBlock.signature,
    };
}
export function getBlockHeaderProposerSignatureSet(state, signedBlockHeader) {
    const { config, epochCtx } = state;
    const domain = config.getDomain(state.slot, DOMAIN_BEACON_PROPOSER, signedBlockHeader.message.slot);
    return {
        type: SignatureSetType.single,
        pubkey: epochCtx.index2pubkey[signedBlockHeader.message.proposerIndex],
        signingRoot: computeSigningRoot(ssz.phase0.BeaconBlockHeader, signedBlockHeader.message, domain),
        signature: signedBlockHeader.signature,
    };
}
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