diff --git a/netlib/contrib/__init__.py b/netlib/contrib/__init__.py
deleted file mode 100644
index e69de29bb..000000000
diff --git a/netlib/contrib/md5crypt.py b/netlib/contrib/md5crypt.py
deleted file mode 100644
index d64ea8ac4..000000000
--- a/netlib/contrib/md5crypt.py
+++ /dev/null
@@ -1,94 +0,0 @@
-# Based on FreeBSD src/lib/libcrypt/crypt.c 1.2
-# http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/src/lib/libcrypt/crypt.c?rev=1.2&content-type=text/plain
-
-# Original license:
-# * "THE BEER-WARE LICENSE" (Revision 42):
-# * <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
-# * can do whatever you want with this stuff. If we meet some day, and you think
-# * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
-
-# This port adds no further stipulations.  I forfeit any copyright interest.
-
-import md5
-
-def md5crypt(password, salt, magic='$1$'):
-    # /* The password first, since that is what is most unknown */ /* Then our magic string */ /* Then the raw salt */
-    m = md5.new()
-    m.update(password + magic + salt)
-
-    # /* Then just as many characters of the MD5(pw,salt,pw) */
-    mixin = md5.md5(password + salt + password).digest()
-    for i in range(0, len(password)):
-        m.update(mixin[i % 16])
-
-    # /* Then something really weird... */
-    # Also really broken, as far as I can tell.  -m
-    i = len(password)
-    while i:
-        if i & 1:
-            m.update('\x00')
-        else:
-            m.update(password[0])
-        i >>= 1
-
-    final = m.digest()
-
-    # /* and now, just to make sure things don't run too fast */
-    for i in range(1000):
-        m2 = md5.md5()
-        if i & 1:
-            m2.update(password)
-        else:
-            m2.update(final)
-
-        if i % 3:
-            m2.update(salt)
-
-        if i % 7:
-            m2.update(password)
-
-        if i & 1:
-            m2.update(final)
-        else:
-            m2.update(password)
-
-        final = m2.digest()
-
-    # This is the bit that uses to64() in the original code.
-
-    itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
-
-    rearranged = ''
-    for a, b, c in ((0, 6, 12), (1, 7, 13), (2, 8, 14), (3, 9, 15), (4, 10, 5)):
-        v = ord(final[a]) << 16 | ord(final[b]) << 8 | ord(final[c])
-        for i in range(4):
-            rearranged += itoa64[v & 0x3f]; v >>= 6
-
-    v = ord(final[11])
-    for i in range(2):
-        rearranged += itoa64[v & 0x3f]; v >>= 6
-
-    return magic + salt + '$' + rearranged
-
-if __name__ == '__main__':
-
-    def test(clear_password, the_hash):
-        magic, salt = the_hash[1:].split('$')[:2]
-        magic = '$' + magic + '$'
-        return md5crypt(clear_password, salt, magic) == the_hash
-
-    test_cases = (
-        (' ', '$1$yiiZbNIH$YiCsHZjcTkYd31wkgW8JF.'),
-        ('pass', '$1$YeNsbWdH$wvOF8JdqsoiLix754LTW90'),
-        ('____fifteen____', '$1$s9lUWACI$Kk1jtIVVdmT01p0z3b/hw1'),
-        ('____sixteen_____', '$1$dL3xbVZI$kkgqhCanLdxODGq14g/tW1'),
-        ('____seventeen____', '$1$NaH5na7J$j7y8Iss0hcRbu3kzoJs5V.'),
-        ('__________thirty-three___________', '$1$HO7Q6vzJ$yGwp2wbL5D7eOVzOmxpsy.'),
-        ('apache', '$apr1$J.w5a/..$IW9y6DR0oO/ADuhlMF5/X1')
-    )
-
-    for clearpw, hashpw in test_cases:
-        if test(clearpw, hashpw):
-            print '%s: pass' % clearpw
-        else:
-            print '%s: FAIL' % clearpw
diff --git a/netlib/http_auth.py b/netlib/http_auth.py
index b0451e3b0..937b66f0e 100644
--- a/netlib/http_auth.py
+++ b/netlib/http_auth.py
@@ -1,4 +1,4 @@
-from .contrib import md5crypt
+from passlib.apache import HtpasswdFile
 import http
 from argparse import Action, ArgumentTypeError
 
@@ -78,32 +78,14 @@ class PassManHtpasswd:
     """
         Read usernames and passwords from an htpasswd file
     """
-    def __init__(self, fp):
+    def __init__(self, path):
         """
             Raises ValueError if htpasswd file is invalid.
         """
-        self.usernames = {}
-        for l in fp:
-            l = l.strip().split(':')
-            if len(l) != 2:
-                raise ValueError("Invalid htpasswd file.")
-            parts = l[1].split('$')
-            if len(parts) != 4:
-                raise ValueError("Invalid htpasswd file.")
-            self.usernames[l[0]] = dict(
-                token = l[1],
-                dummy = parts[0],
-                magic = parts[1],
-                salt = parts[2],
-                hashed_password = parts[3]
-            )
+        self.htpasswd = HtpasswdFile(path)
 
     def test(self, username, password_token):
-        ui = self.usernames.get(username)
-        if not ui:
-            return False
-        expected = md5crypt.md5crypt(password_token, ui["salt"], '$'+ui["magic"]+'$')
-        return expected==ui["token"]
+        return bool(self.htpasswd.check_password(username, password_token))
 
 
 class PassManSingleUser:
@@ -149,6 +131,5 @@ class NonanonymousAuthAction(AuthAction):
 
 class HtpasswdAuthAction(AuthAction):
     def getPasswordManager(self, s):
-        with open(s, "r") as f:
-            return PassManHtpasswd(f)
+        return PassManHtpasswd(s)
 
diff --git a/setup.py b/setup.py
index 5ba9f824e..2dcfa248b 100644
--- a/setup.py
+++ b/setup.py
@@ -88,5 +88,5 @@ setup(
             "Topic :: Software Development :: Testing :: Traffic Generation",
             "Topic :: Internet :: WWW/HTTP",
         ],
-        install_requires=["pyasn1>0.1.2", "pyopenssl>=0.14"],
+        install_requires=["pyasn1>0.1.2", "pyopenssl>=0.14", "passlib>=1.6.2"],
 )
diff --git a/test/test_http_auth.py b/test/test_http_auth.py
index dd0273fe6..176aa3ffb 100644
--- a/test/test_http_auth.py
+++ b/test/test_http_auth.py
@@ -12,14 +12,10 @@ class TestPassManNonAnon:
 
 class TestPassManHtpasswd:
     def test_file_errors(self):
-        s = cStringIO.StringIO("foo")
-        tutils.raises("invalid htpasswd", http_auth.PassManHtpasswd, s)
-        s = cStringIO.StringIO("foo:bar$foo")
-        tutils.raises("invalid htpasswd", http_auth.PassManHtpasswd, s)
+        tutils.raises("malformed htpasswd file", http_auth.PassManHtpasswd, tutils.test_data.path("data/server.crt"))
 
     def test_simple(self):
-        f = open(tutils.test_data.path("data/htpasswd"),"rb")
-        pm = http_auth.PassManHtpasswd(f)
+        pm = http_auth.PassManHtpasswd(tutils.test_data.path("data/htpasswd"))
 
         vals = ("basic", "test", "test")
         p = http.assemble_http_basic_auth(*vals)