From 1e4cdab096210ac0b8ebef1547c6d850ccc00d26 Mon Sep 17 00:00:00 2001
From: ThomasV <thomasv@electrum.org>
Date: Fri, 2 Sep 2016 10:20:04 +0200
Subject: [PATCH] normalize passphrase

---
 gui/qt/installwizard.py | 1 -
 lib/bitcoin.py          | 2 +-
 lib/mnemonic.py         | 5 +++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/gui/qt/installwizard.py b/gui/qt/installwizard.py
index 199bb0fb0..4ba2c6b56 100644
--- a/gui/qt/installwizard.py
+++ b/gui/qt/installwizard.py
@@ -7,7 +7,6 @@ import PyQt4.QtCore as QtCore
 
 import electrum
 from electrum.wallet import Wallet
-from electrum.mnemonic import prepare_seed
 from electrum.util import UserCancelled
 from electrum.base_wizard import BaseWizard
 from electrum.i18n import _
diff --git a/lib/bitcoin.py b/lib/bitcoin.py
index 81875a6e3..44094da1e 100644
--- a/lib/bitcoin.py
+++ b/lib/bitcoin.py
@@ -160,7 +160,7 @@ hmac_sha_512 = lambda x,y: hmac.new(x, y, hashlib.sha512).digest()
 
 def is_new_seed(x, prefix=version.SEED_PREFIX):
     import mnemonic
-    x = mnemonic.prepare_seed(x)
+    x = mnemonic.normalize_text(x)
     s = hmac_sha_512("Seed version", x.encode('utf8')).encode('hex')
     return s.startswith(prefix)
 
diff --git a/lib/mnemonic.py b/lib/mnemonic.py
index 6ebc7870f..4ead59ba6 100644
--- a/lib/mnemonic.py
+++ b/lib/mnemonic.py
@@ -78,7 +78,7 @@ def is_CJK(c):
     return False
 
 
-def prepare_seed(seed):
+def normalize_text(seed):
     # normalize
     seed = unicodedata.normalize('NFKD', unicode(seed))
     # lower
@@ -126,7 +126,8 @@ class Mnemonic(object):
     @classmethod
     def mnemonic_to_seed(self, mnemonic, passphrase):
         PBKDF2_ROUNDS = 2048
-        mnemonic = prepare_seed(mnemonic)
+        mnemonic = normalize_text(mnemonic)
+        passphrase = normalize_text(passphrase)
         return pbkdf2.PBKDF2(mnemonic, 'electrum' + passphrase, iterations = PBKDF2_ROUNDS, macmodule = hmac, digestmodule = hashlib.sha512).read(64)
 
     def mnemonic_encode(self, i):