client: only normalize passphrase if not entered on device

CHANGELOG.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 _At the moment, the project does __not__ adhere to [Semantic Versioning](http://semver.org/spec/v2.0.0.html). That is expected to change with version 1.0._
 
+## [0.11.1] - unreleased
+[0.11.1]: https://github.com/trezor/python-trezor/compare/v0.11.0...master
+
+### Fixed
+- crash when entering passphrase on device with Trezor T
 
 ## [0.11.0] - 2018-12-06
 [0.11.0]: https://github.com/trezor/python-trezor/compare/v0.10.2...v0.11.0

trezorlib/client.py

@@ -141,10 +141,10 @@ class TrezorClient:
                 self.call_raw(messages.Cancel())
                 raise
 
-        passphrase = Mnemonic.normalize_string(passphrase)
-        if len(passphrase) > MAX_PASSPHRASE_LENGTH:
-            self.call_raw(messages.Cancel())
-            raise ValueError("Passphrase too long")
+            passphrase = Mnemonic.normalize_string(passphrase)
+            if len(passphrase) > MAX_PASSPHRASE_LENGTH:
+                self.call_raw(messages.Cancel())
+                raise ValueError("Passphrase too long")
 
         resp = self.call_raw(messages.PassphraseAck(passphrase=passphrase))
         if isinstance(resp, messages.PassphraseStateRequest):