Convert ExternallyManagedKeyHandler to TypeScript

modules/e2ee/ExternallyManagedKeyHandler.ts

@@ -0,0 +1,34 @@
+import JitsiConference from '../../JitsiConference';
+import { KeyHandler } from './KeyHandler';
+
+/**
+ * This module integrates {@link E2EEContext} with {external} in order to set the keys for encryption.
+ */
+
+/**
+ * Information about an encryption key for E2EE.
+ */
+export interface KeyInfo {
+    encryptionKey: boolean | Uint8Array<ArrayBufferLike>;
+    index: number;
+}
+
+/**
+ * This module integrates {@link E2EEContext} with an external key provider
+ * in order to set the keys for encryption.
+ */
+export class ExternallyManagedKeyHandler extends KeyHandler {
+    constructor(conference: JitsiConference) {
+        // The `sharedKey: true` flag tells the parent KeyHandler that
+        // one key is used across the whole conference.
+        super(conference, { sharedKey: true });
+    }
+
+    /**
+     * Sets the key and index for End-to-End encryption.
+     */
+    setKey(keyInfo: KeyInfo): void {
+        this.e2eeCtx.setKey(undefined, keyInfo.encryptionKey, keyInfo.index);
+    }
+}
+