Button to reset cross-signing and SSSS keys

src/components/views/dialogs/ConfirmDestroyCrossSigningDialog.js

@@ -0,0 +1,63 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import PropTypes from 'prop-types';
+import {_t} from "../../../languageHandler";
+import * as sdk from "../../../index";
+
+export default class ConfirmDestroyCrossSigningDialog extends React.Component {
+    static propTypes = {
+        onFinished: PropTypes.func.isRequired,
+    };
+
+    _onConfirm = () => {
+        this.props.onFinished(true);
+    };
+
+    _onDecline = () => {
+        this.props.onFinished(false);
+    };
+
+    render() {
+        const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
+        const DialogButtons = sdk.getComponent('views.elements.DialogButtons');
+
+        return (
+            <BaseDialog className='mx_ConfirmDestroyCrossSigningDialog' hasCancel={true}
+                        onFinished={this.props.onFinished}
+                        title={_t("Destroy cross-signing keys?")}>
+                <div className='mx_ConfirmDestroyCrossSigningDialog_content'>
+                    <p>
+                        {_t(
+                            "Deleting cross-signing keys is permanent. " +
+                            "Anyone you have verified with will see security alerts. " +
+                            "You almost certainly don't want to do this, unless " +
+                            "you've lost every device you can cross-sign from."
+                        )}
+                    </p>
+                </div>
+                <DialogButtons
+                    primaryButton={_t("Clear cross-signing keys")}
+                    onPrimaryButtonClick={this._onConfirm}
+                    primaryButtonClass="danger"
+                    cancelButton={_t("Cancel")}
+                    onCancel={this._onDecline}
+                />
+            </BaseDialog>
+        );
+    }
+}

src/components/views/settings/CrossSigningPanel.js

@@ -20,6 +20,7 @@ import {MatrixClientPeg} from '../../../MatrixClientPeg';
 import { _t } from '../../../languageHandler';
 import * as sdk from '../../../index';
 import { accessSecretStorage } from '../../../CrossSigningManager';
+import Modal from '../../../Modal';
 
 export default class CrossSigningPanel extends React.PureComponent {
     constructor(props) {
@@ -87,10 +88,10 @@ export default class CrossSigningPanel extends React.PureComponent {
      *    cross-signing keys as needed.
      * 3. All keys are loaded and there's nothing to do.
      */
-    _bootstrapSecureSecretStorage = async () => {
+    _bootstrapSecureSecretStorage = async (force=false) => {
         this.setState({ error: null });
         try {
-            await accessSecretStorage();
+            await accessSecretStorage(() => undefined, force);
         } catch (e) {
             this.setState({ error: e });
             console.error("Error bootstrapping secret storage", e);
@@ -99,6 +100,19 @@ export default class CrossSigningPanel extends React.PureComponent {
         this._getUpdatedStatus();
     }
 
+    onDestroyStorage = (act) => {
+        if (!act) return;
+        console.log("Destroy secret storage:", act);
+        this._bootstrapSecureSecretStorage(true);
+    }
+
+    _destroySecureSecretStorage = () => {
+        const ConfirmDestoryCrossSigningDialog = sdk.getComponent("dialogs.ConfirmDestroyCrossSigningDialog");
+        Modal.createDialog(ConfirmDestoryCrossSigningDialog, {
+            onFinished: this.onDestroyStorage
+        });
+    }
+
     render() {
         const AccessibleButton = sdk.getComponent("elements.AccessibleButton");
         const {
@@ -142,6 +156,12 @@ export default class CrossSigningPanel extends React.PureComponent {
                     {_t("Bootstrap cross-signing and secret storage")}
                 </AccessibleButton>
             </div>;
+        } else {
+            bootstrapButton = <div className="mx_CrossSigningPanel_buttonRow">
+                <AccessibleButton kind="danger" onClick={this._destroySecureSecretStorage}>
+                    {_t("Torpedo cross-signing")}
+                </AccessibleButton>
+            </div>;
         }
 
         return (