chore: replace window with globalThis in TypeScript utils for better node compatibility (#132)

Author: altkdf

examples/password_manager/frontend/src/lib/enums.ts

@@ -123,7 +123,7 @@ export class KeyManager {
         vetkeyName: Uint8Array,
     ): Promise<Uint8Array> {
         // create a random transport key
-        const seed = window.crypto.getRandomValues(new Uint8Array(32));
+        const seed = globalThis.crypto.getRandomValues(new Uint8Array(32));
         const tsk = new TransportSecretKey(seed);
         const encryptedVetkey = await this.canisterClient.get_encrypted_vetkey(
             keyOwner,

frontend/ic_vetkeys/src/key_manager/index.ts

@@ -233,7 +233,7 @@ test("hkdf using webcrypto", async () => {
         hash: "SHA-256",
         length: 32 * 8,
     };
-    const derived = await window.crypto.subtle.deriveKey(
+    const derived = await globalThis.crypto.subtle.deriveKey(
         algorithm,
         wckey,
         derivedAlgo,
@@ -242,7 +242,7 @@ test("hkdf using webcrypto", async () => {
     );
 
     const derivedBytes = new Uint8Array(
-        await window.crypto.subtle.exportKey("raw", derived),
+        await globalThis.crypto.subtle.exportKey("raw", derived),
     );
     assertEqual(
         bytesToHex(derivedBytes),
@@ -318,7 +318,9 @@ test("AES-GCM encryption", async () => {
 
     // Test appending random bytes
     for (let trial = 1; trial < 32; trial++) {
-        const extraBytes = window.crypto.getRandomValues(new Uint8Array(trial));
+        const extraBytes = globalThis.crypto.getRandomValues(
+            new Uint8Array(trial),
+        );
         const modMsg = new Uint8Array([...msg3, ...extraBytes]);
 
         await expect(async () => {

frontend/ic_vetkeys/src/utils/utils.test.ts

@@ -440,7 +440,7 @@ export class DerivedKeyMaterial {
      */
     static async setup(bytes: Uint8Array) {
         const exportable = false;
-        const hkdf = await window.crypto.subtle.importKey(
+        const hkdf = await globalThis.crypto.subtle.importKey(
             "raw",
             bytes,
             "HKDF",
@@ -482,7 +482,7 @@ export class DerivedKeyMaterial {
             length: 32 * 8,
         };
 
-        return window.crypto.subtle.deriveKey(
+        return globalThis.crypto.subtle.deriveKey(
             algorithm,
             this.#hkdf,
             gcmParams,
@@ -503,10 +503,10 @@ export class DerivedKeyMaterial {
         const gcmKey = await this.deriveAesGcmCryptoKey(domainSep);
 
         // The nonce must never be reused with a given key
-        const nonce = window.crypto.getRandomValues(new Uint8Array(12));
+        const nonce = globalThis.crypto.getRandomValues(new Uint8Array(12));
 
         const ciphertext = new Uint8Array(
-            await window.crypto.subtle.encrypt(
+            await globalThis.crypto.subtle.encrypt(
                 { name: "AES-GCM", iv: nonce },
                 gcmKey,
                 asBytes(message),
@@ -541,7 +541,7 @@ export class DerivedKeyMaterial {
         const gcmKey = await this.deriveAesGcmCryptoKey(domainSep);
 
         try {
-            const ptext = await window.crypto.subtle.decrypt(
+            const ptext = await globalThis.crypto.subtle.decrypt(
                 { name: "AES-GCM", iv: nonce },
                 gcmKey,
                 ciphertext,
@@ -805,7 +805,7 @@ export class IbeSeed {
      */
     static random() {
         return new IbeSeed(
-            window.crypto.getRandomValues(new Uint8Array(SEED_BYTES)),
+            globalThis.crypto.getRandomValues(new Uint8Array(SEED_BYTES)),
         );
     }
 

frontend/ic_vetkeys/src/utils/utils.ts

@@ -1,12 +1,6 @@
 import { beforeAll } from "vitest";
 import indexeddb from "fake-indexeddb";
-import crypto from "node:crypto";
 
 beforeAll(() => {
-    Object.defineProperty(window, "crypto", {
-        value: crypto.webcrypto,
-        writable: true,
-    });
-
     globalThis.indexedDB = indexeddb;
 });