diff --git a/IPython/lib/__init__.py b/IPython/lib/__init__.py
index 8eb8901..94b8ade 100644
--- a/IPython/lib/__init__.py
+++ b/IPython/lib/__init__.py
@@ -9,13 +9,3 @@ Extra capabilities for IPython
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
-
-#-----------------------------------------------------------------------------
-# Imports
-#-----------------------------------------------------------------------------
-
-from IPython.lib.security import passwd
-
-#-----------------------------------------------------------------------------
-# Code
-#-----------------------------------------------------------------------------
diff --git a/IPython/lib/security.py b/IPython/lib/security.py
deleted file mode 100644
index 152561d..0000000
--- a/IPython/lib/security.py
+++ /dev/null
@@ -1,114 +0,0 @@
-"""
-Password generation for the IPython notebook.
-"""
-#-----------------------------------------------------------------------------
-# Imports
-#-----------------------------------------------------------------------------
-# Stdlib
-import getpass
-import hashlib
-import random
-
-# Our own
-from IPython.core.error import UsageError
-from IPython.utils.py3compat import encode
-
-#-----------------------------------------------------------------------------
-# Globals
-#-----------------------------------------------------------------------------
-
-# Length of the salt in nr of hex chars, which implies salt_len * 4
-# bits of randomness.
-salt_len = 12
-
-#-----------------------------------------------------------------------------
-# Functions
-#-----------------------------------------------------------------------------
-
-def passwd(passphrase=None, algorithm='sha1'):
-    """Generate hashed password and salt for use in notebook configuration.
-
-    In the notebook configuration, set `c.NotebookApp.password` to
-    the generated string.
-
-    Parameters
-    ----------
-    passphrase : str
-        Password to hash.  If unspecified, the user is asked to input
-        and verify a password.
-    algorithm : str
-        Hashing algorithm to use (e.g, 'sha1' or any argument supported
-        by :func:`hashlib.new`).
-
-    Returns
-    -------
-    hashed_passphrase : str
-        Hashed password, in the format 'hash_algorithm:salt:passphrase_hash'.
-
-    Examples
-    --------
-    >>> passwd('mypassword')
-    'sha1:7cf3:b7d6da294ea9592a9480c8f52e63cd42cfb9dd12'  # random
-
-    """
-    if passphrase is None:
-        for i in range(3):
-            p0 = getpass.getpass('Enter password: ')
-            p1 = getpass.getpass('Verify password: ')
-            if p0 == p1:
-                passphrase = p0
-                break
-            else:
-                print('Passwords do not match.')
-        else:
-            raise UsageError('No matching passwords found. Giving up.')
-
-    h = hashlib.new(algorithm)
-    salt = ('%0' + str(salt_len) + 'x') % random.getrandbits(4 * salt_len)
-    h.update(encode(passphrase, 'utf-8') + encode(salt, 'ascii'))
-
-    return ':'.join((algorithm, salt, h.hexdigest()))
-
-
-def passwd_check(hashed_passphrase, passphrase):
-    """Verify that a given passphrase matches its hashed version.
-
-    Parameters
-    ----------
-    hashed_passphrase : str
-        Hashed password, in the format returned by `passwd`.
-    passphrase : str
-        Passphrase to validate.
-
-    Returns
-    -------
-    valid : bool
-        True if the passphrase matches the hash.
-
-    Examples
-    --------
-    >>> from IPython.lib.security import passwd_check
-    >>> passwd_check('sha1:0e112c3ddfce:a68df677475c2b47b6e86d0467eec97ac5f4b85a',
-    ...              'mypassword')
-    True
-
-    >>> passwd_check('sha1:0e112c3ddfce:a68df677475c2b47b6e86d0467eec97ac5f4b85a',
-    ...              'anotherpassword')
-    False
-    """
-    try:
-        algorithm, salt, pw_digest = hashed_passphrase.split(':', 2)
-    except (ValueError, TypeError):
-        return False
-
-    try:
-        h = hashlib.new(algorithm)
-    except ValueError:
-        return False
-
-    if len(pw_digest) == 0:
-        return False
-
-    h.update(encode(passphrase, 'utf-8') + encode(salt, 'ascii'))
-
-    return h.hexdigest() == pw_digest
diff --git a/IPython/lib/tests/test_security.py b/IPython/lib/tests/test_security.py
deleted file mode 100644
index 27c32ab..0000000
--- a/IPython/lib/tests/test_security.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# coding: utf-8
-from IPython.lib import passwd
-from IPython.lib.security import passwd_check, salt_len
-
-def test_passwd_structure():
-    p = passwd("passphrase")
-    algorithm, salt, hashed = p.split(":")
-    assert algorithm == "sha1"
-    assert len(salt) == salt_len
-    assert len(hashed) == 40
-
-def test_roundtrip():
-    p = passwd("passphrase")
-    assert passwd_check(p, "passphrase") is True
-
-
-def test_bad():
-    p = passwd('passphrase')
-    assert passwd_check(p, p) is False
-    assert passwd_check(p, "a:b:c:d") is False
-    assert passwd_check(p, "a:b") is False
-
-
-def test_passwd_check_unicode():
-    # GH issue #4524
-    phash = u'sha1:23862bc21dd3:7a415a95ae4580582e314072143d9c382c491e4f'
-    assert passwd_check(phash, u"łe¶ŧ←↓→")