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omnichainCrypto.js
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"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
exports.__esModule = true;
exports.publicKeyCompress = exports.OmnichainCrypto = void 0;
var elliptic = require("elliptic");
var OmnichainCrypto = /** @class */ (function () {
function OmnichainCrypto(hashFun, curveName, keyPair) {
var _this = this;
this.sign2buffer = function (msg) {
if (_this.priKey.length != 32) {
throw ("Invalid private key to sign!");
}
var key = _this.ec.keyFromPrivate(_this.priKey);
var sig = key.sign(_this.hashFun(msg));
var n = 32;
var r = sig.r.toArrayLike(Buffer, 'be', n);
var s = sig.s.toArrayLike(Buffer, 'be', n);
return Buffer.concat([r, s]);
};
this.sign2hexstring = function (msg) {
return _this.sign2buffer(msg).toString('hex');
};
this.sign2bufferrecovery = function (msg) {
if (_this.priKey.length != 32) {
throw ("Invalid private key to sign!");
}
var key = _this.ec.keyFromPrivate(_this.priKey);
var sig = key.sign(_this.hashFun(msg));
var n = 32;
var r = sig.r.toArrayLike(Buffer, 'be', n);
var s = sig.s.toArrayLike(Buffer, 'be', n);
return Buffer.concat([r, s, Buffer.from([sig.recoveryParam + 27])]);
};
this.sign2hexstringrecovery = function (msg) {
return _this.sign2bufferrecovery(msg).toString('hex');
};
this.sign = function (msg) {
if (_this.priKey.length != 32) {
throw ("Invalid private key to sign!");
}
var key = _this.ec.keyFromPrivate(_this.priKey);
var sig = key.sign(_this.hashFun(msg));
return sig;
};
this.verify = function (msg, signature) {
if ((_this.pubKey.length != 65) && (_this.pubKey.length != 33)) {
throw ("Invalid public key to verify!");
}
var msgHash = _this.hashFun(msg);
var key = _this.ec.keyFromPublic(_this.pubKey);
return key.verify(msgHash, signature, _this.pubKey);
};
this.hashFun = hashFun;
this.ec = new elliptic.ec(curveName);
if (typeof keyPair == 'undefined') {
var keyPair_1 = this.ec.genKeyPair();
this.pubKey = Buffer.from(keyPair_1.getPublic('hex'), 'hex');
this.priKey = Buffer.from(keyPair_1.getPrivate('hex'), 'hex');
}
else {
this.pubKey = Buffer.from(keyPair[0], 'hex');
this.priKey = Buffer.from(keyPair[1], 'hex');
}
if (this.pubKey.length === 64) {
this.pubKey = Buffer.concat([Buffer.from([4]), this.pubKey]);
}
else if (this.pubKey.length === 33 || this.pubKey.length === 0) {
// do nothing
}
else {
throw ("Invalid public key!");
}
if ((this.priKey.length != 0) && (this.priKey.length != 32)) {
throw ("Invalid private key!");
}
}
return OmnichainCrypto;
}());
exports.OmnichainCrypto = OmnichainCrypto;
function publicKeyCompress(pubKey) {
return __awaiter(this, void 0, void 0, function () {
var y, _1n, flag, x, finalX, finalXArray;
return __generator(this, function (_a) {
if (pubKey.length == 128) {
y = "0x" + pubKey.substring(64);
_1n = BigInt(1);
flag = BigInt(y) & _1n ? '03' : '02';
x = Buffer.from(pubKey.substring(0, 64), "hex");
finalX = Buffer.concat([Buffer.from(flag, 'hex'), x]);
finalXArray = new Uint8Array(finalX);
// console.log("Public Key: \n"+ finalXArray);
return [2 /*return*/, finalXArray];
}
else {
throw ("Invalid public key length!" + pubKey.length);
}
return [2 /*return*/];
});
});
}
exports.publicKeyCompress = publicKeyCompress;