digitalbitbox: import mobile pairing config

- menu option to verify addresses securely
 - p2pkh transaction verification

Next steps: p2sh tx verification and full 2FA.

plugins/digitalbitbox/qt.py

@@ -2,6 +2,10 @@ from PyQt5.QtWidgets import (QInputDialog, QLineEdit)
 from ..hw_wallet.qt import QtHandlerBase, QtPluginBase
 from .digitalbitbox import DigitalBitboxPlugin
 
+from electrum.i18n import _
+from electrum.plugins import hook
+from electrum.wallet import Wallet, Standard_Wallet
+from electrum.bitcoin import EncodeAES
 
 class Plugin(DigitalBitboxPlugin, QtPluginBase):
     icon_unpaired = ":icons/digitalbitbox_unpaired.png"
@@ -10,6 +14,31 @@ class Plugin(DigitalBitboxPlugin, QtPluginBase):
     def create_handler(self, window):
         return DigitalBitbox_Handler(window)
 
+    @hook
+    def receive_menu(self, menu, addrs, wallet):
+        if type(wallet) is not Standard_Wallet:
+            return
+
+        keystore = wallet.get_keystore()
+        if type(keystore) is not self.keystore_class:
+            return
+
+        if not self.is_mobile_paired():
+            return
+
+        if len(addrs) == 1:
+            def show_address():
+                change, index = wallet.get_address_index(addrs[0])
+                keypath = '%s/%d/%d' % (keystore.derivation, change, index)
+                xpub = self.get_client(keystore)._get_xpub(keypath)
+                verify_request_payload = {
+                    "type": 'p2pkh',
+                    "echo": xpub['echo'],
+                    }
+                self.comserver_post_notification(verify_request_payload)
+
+            menu.addAction(_("Show on %s") % self.device, show_address)
+
 
 class DigitalBitbox_Handler(QtHandlerBase):