From 3ef54c3285c3727edf60203d754f71b0e90b75f2 2013-11-12 19:44:41
From: Min RK <benjaminrk@gmail.com>
Date: 2013-11-12 19:44:41
Subject: [PATCH] Merge pull request #4526 from takluyver/passwd_check_unicode

Allow unicode arguments to passwd_check on Python 2

Closes #4524
---

diff --git a/IPython/lib/security.py b/IPython/lib/security.py
index f90ca98..d5c61cb 100644
--- a/IPython/lib/security.py
+++ b/IPython/lib/security.py
@@ -113,6 +113,6 @@ def passwd_check(hashed_passphrase, passphrase):
     if len(pw_digest) == 0:
         return False
 
-    h.update(cast_bytes(passphrase, 'utf-8') + str_to_bytes(salt, 'ascii'))
+    h.update(cast_bytes(passphrase, 'utf-8') + cast_bytes(salt, 'ascii'))
 
     return h.hexdigest() == pw_digest
diff --git a/IPython/lib/tests/test_security.py b/IPython/lib/tests/test_security.py
index 09e4fa8..7d89ba1 100644
--- a/IPython/lib/tests/test_security.py
+++ b/IPython/lib/tests/test_security.py
@@ -1,3 +1,4 @@
+# coding: utf-8
 from IPython.lib import passwd
 from IPython.lib.security import passwd_check, salt_len
 import nose.tools as nt
@@ -19,3 +20,7 @@ def test_bad():
     nt.assert_equal(passwd_check(p, 'a:b:c:d'), False)
     nt.assert_equal(passwd_check(p, 'a:b'), False)
 
+def test_passwd_check_unicode():
+    # GH issue #4524
+    phash = u'sha1:23862bc21dd3:7a415a95ae4580582e314072143d9c382c491e4f'
+    assert passwd_check(phash, u"łe¶ŧ←↓→")
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