lisk-framework
Version:
Lisk blockchain application platform
48 lines • 2.87 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getSortedWeightsAndValidatorKeys = exports.verifyAggregateCertificateSignature = exports.verifySingleCertificateSignature = exports.signCertificate = exports.computeUnsignedCertificateFromBlockHeader = void 0;
const lisk_cryptography_1 = require("@liskhq/lisk-cryptography");
const lisk_codec_1 = require("@liskhq/lisk-codec");
const schema_1 = require("./schema");
const constants_1 = require("./constants");
const computeUnsignedCertificateFromBlockHeader = (blockHeader) => {
if (!blockHeader.stateRoot) {
throw new Error('stateRoot is not defined.');
}
if (!blockHeader.validatorsHash) {
throw new Error('validatorsHash is not defined.');
}
return {
blockID: blockHeader.id,
height: blockHeader.height,
stateRoot: blockHeader.stateRoot,
timestamp: blockHeader.timestamp,
validatorsHash: blockHeader.validatorsHash,
};
};
exports.computeUnsignedCertificateFromBlockHeader = computeUnsignedCertificateFromBlockHeader;
const signCertificate = (sk, chainID, unsignedCertificate) => lisk_cryptography_1.bls.signData(constants_1.MESSAGE_TAG_CERTIFICATE, chainID, lisk_codec_1.codec.encode(schema_1.unsignedCertificateSchema, unsignedCertificate), sk);
exports.signCertificate = signCertificate;
const verifySingleCertificateSignature = (pk, signature, chainID, unsignedCertificate) => lisk_cryptography_1.bls.verifyData(constants_1.MESSAGE_TAG_CERTIFICATE, chainID, lisk_codec_1.codec.encode(schema_1.unsignedCertificateSchema, unsignedCertificate), signature, pk);
exports.verifySingleCertificateSignature = verifySingleCertificateSignature;
const verifyAggregateCertificateSignature = (validators, threshold, chainID, certificate) => {
if (!certificate.aggregationBits || !certificate.signature) {
return false;
}
const { weights, validatorKeys } = (0, exports.getSortedWeightsAndValidatorKeys)(validators);
const { aggregationBits, signature, ...unsignedCertificate } = certificate;
return lisk_cryptography_1.bls.verifyWeightedAggSig(validatorKeys, aggregationBits, signature, constants_1.MESSAGE_TAG_CERTIFICATE, chainID, lisk_codec_1.codec.encode(schema_1.unsignedCertificateSchema, unsignedCertificate), weights, threshold);
};
exports.verifyAggregateCertificateSignature = verifyAggregateCertificateSignature;
const getSortedWeightsAndValidatorKeys = (validators) => {
validators.sort((a, b) => a.blsKey.compare(b.blsKey));
const weights = [];
const validatorKeys = [];
for (const validator of validators) {
weights.push(validator.bftWeight);
validatorKeys.push(validator.blsKey);
}
return { weights, validatorKeys };
};
exports.getSortedWeightsAndValidatorKeys = getSortedWeightsAndValidatorKeys;
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