feat(auth): implement user authentication system

backend/node_modules/pure-rand/lib/generator/RandomGenerator.js

@@ -0,0 +1,29 @@
+"use strict";
+exports.__esModule = true;
+exports.skipN = exports.unsafeSkipN = exports.generateN = exports.unsafeGenerateN = void 0;
+function unsafeGenerateN(rng, num) {
+    var out = [];
+    for (var idx = 0; idx != num; ++idx) {
+        out.push(rng.unsafeNext());
+    }
+    return out;
+}
+exports.unsafeGenerateN = unsafeGenerateN;
+function generateN(rng, num) {
+    var nextRng = rng.clone();
+    var out = unsafeGenerateN(nextRng, num);
+    return [out, nextRng];
+}
+exports.generateN = generateN;
+function unsafeSkipN(rng, num) {
+    for (var idx = 0; idx != num; ++idx) {
+        rng.unsafeNext();
+    }
+}
+exports.unsafeSkipN = unsafeSkipN;
+function skipN(rng, num) {
+    var nextRng = rng.clone();
+    unsafeSkipN(nextRng, num);
+    return nextRng;
+}
+exports.skipN = skipN;