[nscl] Replaced lib/sha256.js with web platform native implementation (thanks Martin for suggested patch).

Author: hackademix

boot.js

@@ -26,7 +26,7 @@ try {
   let includeFrom = (dir, srcs) =>  include(srcs.map(name => `${BASE}/${dir}/${name}.js`));
 
   includeFrom("lib", [
-    "browser-polyfill", "punycode", "sha256"
+    "browser-polyfill", "punycode",
   ]);
 
   includeFrom("common", [
@@ -35,6 +35,7 @@ try {
     "CSP", "CapsCSP", "NetCSP",
     "RequestKey", "Sites", "Permissions", "Policy",
     "Storage",
+    "sha256",
   ]);
 
   includeFrom("service", [

common/sha256.js

@@ -0,0 +1,27 @@
+/*
+ * NoScript Commons Library
+ * Reusable building blocks for cross-browser security/privacy WebExtensions.
+ * Copyright (C) 2020-2023 Giorgio Maone <https://maone.net>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+async function sha256(s) {
+  const bytes = new TextEncoder().encode(s);
+  const hashBytes = await crypto.subtle.digest("SHA-256", bytes);
+  return new Uint8Array(hashBytes).reduce(
+  (s, b) => s + b.toString(16).padStart(2, "0"), ""
+ );
+}