Be responsive when generating private key

js/crypto.js

@@ -112,29 +112,37 @@ function signMessage(text, key, callback) {
  * @returns {undefined}
  */
 function generatePrivateKey(userid, passphrase, callback) {
-    var F = kbpgp["const"].openpgp;
+    var statustextEl = $("#statustext");
+    statustextEl.html("<i class='fas fa-spin fa-spinner'></i> Generating cryptographic key...");
+    setTimeout(function () {
+        var F = kbpgp["const"].openpgp;
 
-    var opts = {
-        userid: userid,
-        primary: {
-            nbits: 2048,
-            flags: F.certify_keys | F.sign_data | F.auth | F.encrypt_comm | F.encrypt_storage,
-            expire_in: 0  // never expire
-        },
-        subkeys: []
-    };
+        var opts = {
+            userid: userid,
+            primary: {
+                nbits: 2048,
+                flags: F.certify_keys | F.sign_data | F.auth | F.encrypt_comm | F.encrypt_storage,
+                expire_in: 0  // never expire
+            },
+            subkeys: []
+        };
 
-    kbpgp.KeyManager.generate(opts, function (err, alice) {
-        if (!err) {
-            alice.sign({}, function (err) {
-                alice.export_pgp_private({
-                    passphrase: passphrase
-                }, function (err, pgp_private) {
-                    callback(alice);
+        kbpgp.KeyManager.generate(opts, function (err, alice) {
+            if (!err) {
+                alice.sign({}, function (err) {
+                    alice.export_pgp_private({
+                        passphrase: passphrase
+                    }, function (err, pgp_private) {
+                        statustextEl.html("<i class='fas fa-check'></i> Key generated!");
+                        setTimeout(function () {
+                            statustextEl.html("");
+                        }, 5000);
+                        callback(alice);
+                    });
                 });
-            });
-        }
-    });
+            }
+        });
+    }, 100);
 }
 
 function exportPublicKey() {