@stellot/crypto
Version:
Crypto libraries for front and backend
46 lines (45 loc) • 1.95 kB
JavaScript
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("./utils");
const jsbn_1 = require("jsbn");
const Utils = __importStar(require("./utils"));
const decryptedValue_1 = __importDefault(require("./decryptedValue"));
const encryptedValue_1 = __importDefault(require("./encryptedValue"));
class EncryptionElGamal {
constructor(p, g, y) {
this.p = utils_1.parseBigInt(p);
this.g = utils_1.parseBigInt(g);
this.y = utils_1.parseBigInt(y);
}
encrypt(m, k) {
const tmpKey = k ? Utils.parseBigInt(k) : Utils.getRandomBigInt(jsbn_1.BigInteger.ONE, this.p.subtract(jsbn_1.BigInteger.ONE));
const mBi = new decryptedValue_1.default(m).bi;
const p = this.p;
const a = this.g.modPow(tmpKey, p);
const b = this.y.modPow(tmpKey, p).multiply(mBi).remainder(p);
return new encryptedValue_1.default(a, b);
}
}
exports.default = EncryptionElGamal;