@tgrospic/rnode-http-js
Version:
HTTP client support for RNode
87 lines • 3.88 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.verifyDeployEth = exports.recoverPublicKeyEth = void 0;
var elliptic_1 = require("elliptic");
var ethUtil = __importStar(require("ethereumjs-util"));
var codecs_1 = require("../codecs");
var rnode_sign_1 = require("../rnode-sign");
/**
* Recover public key from Ethereum signed data and signature.
*
* @param data - Signed message bytes
* @param sigHex - Signature base 16
* @returns Public key base 16
*/
var recoverPublicKeyEth = function (data, sigHex) {
// Ethereum lib to recover public key from massage and signature
var hashed = ethUtil.hashPersonalMessage(ethUtil.toBuffer(__spread(data)));
var _a = ethUtil.fromRpcSig(sigHex), v = _a.v, r = _a.r, s = _a.s;
// Public key without prefix
var pubkeyRecover = ethUtil.ecrecover(hashed, v, r, s);
return ethUtil.bufferToHex(Buffer.from(__spread([4], pubkeyRecover)));
};
exports.recoverPublicKeyEth = recoverPublicKeyEth;
/**
* Verify deploy signed with Ethereum compatible signature.
*/
var verifyDeployEth = function (deploySigned) {
var term = deploySigned.term, timestamp = deploySigned.timestamp, phloPrice = deploySigned.phloPrice, phloLimit = deploySigned.phloLimit, validAfterBlockNumber = deploySigned.validAfterBlockNumber, deployer = deploySigned.deployer, sig = deploySigned.sig;
// Serialize deploy data for signing
var deploySerialized = rnode_sign_1.deployDataProtobufSerialize({
term: term, timestamp: timestamp, phloPrice: phloPrice, phloLimit: phloLimit, validAfterBlockNumber: validAfterBlockNumber,
});
// Create a hash of message with prefix
// https://github.com/ethereumjs/ethereumjs-util/blob/4a8001c/src/signature.ts#L136
var deployLen = deploySerialized.length;
var msgPrefix = "\u0019Ethereum Signed Message:\n" + deployLen;
var prefixBin = codecs_1.decodeAscii(msgPrefix);
var msg = __spread(prefixBin, deploySerialized);
var hashed = ethUtil.keccak256(Buffer.from(msg));
// Check deployer's signature
var crypt = new elliptic_1.ec('secp256k1');
var key = crypt.keyFromPublic(deployer);
var sigRS = { r: sig.slice(0, 32), s: sig.slice(32, 64) };
var isValid = key.verify(hashed, sigRS);
return isValid;
};
exports.verifyDeployEth = verifyDeployEth;
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