From 2be9d0a25aa82f53e0e258448a4d8c19fde8bb52 Mon Sep 17 00:00:00 2001
From: Neil Booth <kyuupichan@gmail.com>
Date: Tue, 17 Oct 2017 18:18:03 +0900
Subject: [PATCH] Remove decrypt_message; no longer supported by Trezor or
 KeepKey

---
 plugins/trezor/clientbase.py |  2 +-
 plugins/trezor/plugin.py     | 13 +++----------
 2 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/plugins/trezor/clientbase.py b/plugins/trezor/clientbase.py
index 95196c0a4..d76ca84e5 100644
--- a/plugins/trezor/clientbase.py
+++ b/plugins/trezor/clientbase.py
@@ -229,7 +229,7 @@ class TrezorClientBase(GuiMixin, PrintError):
 
     @staticmethod
     def wrap_methods(cls):
-        for method in ['apply_settings', 'change_pin', 'decrypt_message',
+        for method in ['apply_settings', 'change_pin',
                        'get_address', 'get_public_node',
                        'load_device_by_mnemonic', 'load_device_by_xprv',
                        'recovery_device', 'reset_device', 'sign_message',
diff --git a/plugins/trezor/plugin.py b/plugins/trezor/plugin.py
index edfe318ec..639de7c9e 100644
--- a/plugins/trezor/plugin.py
+++ b/plugins/trezor/plugin.py
@@ -29,14 +29,7 @@ class TrezorCompatibleKeyStore(Hardware_KeyStore):
         return self.plugin.get_client(self, force_pair)
 
     def decrypt_message(self, sequence, message, password):
-        raise RuntimeError(_('Electrum and %s encryption and decryption are currently incompatible') % self.device)
-        client = self.get_client()
-        address_path = self.get_derivation() + "/%d/%d"%sequence
-        address_n = client.expand_path(address_path)
-        payload = base64.b64decode(message)
-        nonce, message, msg_hmac = payload[:33], payload[33:-8], payload[-8:]
-        result = client.decrypt_message(address_n, nonce, message, msg_hmac)
-        return result.message
+        raise RuntimeError(_('Encryption and decryption are not implemented by %s') % self.device)
 
     def sign_message(self, sequence, message, password):
         client = self.get_client()
@@ -55,7 +48,7 @@ class TrezorCompatibleKeyStore(Hardware_KeyStore):
         for txin in tx.inputs():
             pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
             tx_hash = txin['prevout_hash']
-            prev_tx[tx_hash] = txin['prev_tx'] 
+            prev_tx[tx_hash] = txin['prev_tx']
             for x_pubkey in x_pubkeys:
                 if not is_xpubkey(x_pubkey):
                     continue
@@ -96,7 +89,7 @@ class TrezorCompatiblePlugin(HW_PluginBase):
             # raise
             self.print_error("cannot connect at", device.path, str(e))
             return None
- 
+
     def _try_bridge(self, device):
         self.print_error("Trying to connect over Trezor Bridge...")
         try: