Add controllers and packages for security keys

resources/scripts/lib/base64.spec.ts

@@ -0,0 +1,12 @@
+import { decodeBase64 } from '@/lib/base64';
+
+describe('@/lib/base64.ts', function () {
+    describe('decodeBase64()', function () {
+        it.each([
+            ['', ''],
+            ['', ''],
+        ])('should decode "%s" to "%s"', function (input, output) {
+            expect(decodeBase64(input)).toBe(output);
+        });
+    });
+});

resources/scripts/lib/base64.ts

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+function decodeBase64 (input: string): string {
+    input = input.replace(/-/g, '+').replace(/_/g, '/');
+
+    const pad = input.length % 4;
+    if (pad) {
+        if (pad === 1) {
+            throw new Error('InvalidLengthError: Input base64url string is the wrong length to determine padding');
+        }
+
+        input += new Array(5 - pad).join('=');
+    }
+
+    return input;
+}
+
+export { decodeBase64 }

resources/scripts/lib/buffer.spec.ts

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+import { decodeBuffer, encodeBuffer } from '@/lib/buffer';
+
+describe('@/lib/buffer.ts', function () {
+    describe('decodeBuffer()', function () {
+        it.each([
+            ['', ''],
+            ['', ''],
+        ])('should decode "%s" to "%s"', function (input, output) {
+            expect(decodeBuffer(input)).toBe(output);
+        });
+    });
+
+    describe('encodeBuffer()', function () {
+        it.each([
+            [new Uint8Array(0), ''],
+            [new Uint8Array(0), ''],
+        ])('should encode "%s" to "%s"', function (input, output) {
+            expect(encodeBuffer(input)).toBe(output);
+        });
+    });
+});

resources/scripts/lib/buffer.ts

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+function decodeBuffer(value: string): ArrayBuffer {
+    return Uint8Array.from(window.atob(value), c => c.charCodeAt(0));
+}
+
+function encodeBuffer(value: ArrayBuffer): string {
+    return btoa(String.fromCharCode(...new Uint8Array(value)));
+}
+
+export { decodeBuffer, encodeBuffer };