Random cleanup around our usage of binary_type (#879)

3 files changed, 10 insertions, 14 deletions

diff --git a/src/OpenSSL/SSL.py b/src/OpenSSL/SSL.py
index a228b73..ca39930 100644
--- a/src/OpenSSL/SSL.py
+++ b/src/OpenSSL/SSL.py
@@ -7,9 +7,7 @@ from itertools import count, chain
 from weakref import WeakValueDictionary
 from errno import errorcode
 
-from six import (
-    binary_type as _binary_type, integer_types as integer_types, int2byte,
-    indexbytes)
+from six import integer_types, int2byte, indexbytes
 
 from OpenSSL._util import (
     UNSPECIFIED as _UNSPECIFIED,
@@ -461,7 +459,7 @@ class _ALPNSelectHelper(_CallbackExceptionHelper):
                 if outbytes is NO_OVERLAPPING_PROTOCOLS:
                     outbytes = b''
                     any_accepted = False
-                elif not isinstance(outbytes, _binary_type):
+                elif not isinstance(outbytes, bytes):
                     raise TypeError(
                         "ALPN callback must return a bytestring or the "
                         "special NO_OVERLAPPING_PROTOCOLS sentinel value."
@@ -529,7 +527,7 @@ class _OCSPServerCallbackHelper(_CallbackExceptionHelper):
                 # Call the callback.
                 ocsp_data = callback(conn, data)
 
-                if not isinstance(ocsp_data, _binary_type):
+                if not isinstance(ocsp_data, bytes):
                     raise TypeError("OCSP callback must return a bytestring.")
 
                 # If the OCSP data was provided, we will pass it to OpenSSL.
diff --git a/src/OpenSSL/_util.py b/src/OpenSSL/_util.py
index d8e3f66..9f2d724 100644
--- a/src/OpenSSL/_util.py
+++ b/src/OpenSSL/_util.py
@@ -1,7 +1,7 @@
 import sys
 import warnings
 
-from six import PY2, binary_type, text_type
+from six import PY2, text_type
 
 from cryptography.hazmat.bindings.openssl.binding import Binding
 
@@ -79,13 +79,13 @@ def native(s):
     :raise TypeError: The input is neither :py:class:`bytes` nor
         :py:class:`unicode`.
     """
-    if not isinstance(s, (binary_type, text_type)):
+    if not isinstance(s, (bytes, text_type)):
         raise TypeError("%r is neither bytes nor unicode" % s)
     if PY2:
         if isinstance(s, text_type):
             return s.encode("utf-8")
     else:
-        if isinstance(s, binary_type):
+        if isinstance(s, bytes):
             return s.decode("utf-8")
     return s
 
@@ -99,7 +99,7 @@ def path_string(s):
 
     :return: An instance of :py:class:`bytes`.
     """
-    if isinstance(s, binary_type):
+    if isinstance(s, bytes):
         return s
     elif isinstance(s, text_type):
         return s.encode(sys.getfilesystemencoding())
diff --git a/tests/test_crypto.py b/tests/test_crypto.py
index 9d943a9..b0e8e8b 100644
--- a/tests/test_crypto.py
+++ b/tests/test_crypto.py
@@ -13,8 +13,6 @@ from datetime import datetime, timedelta
 
 import pytest
 
-from six import binary_type
-
 from cryptography import x509
 from cryptography.hazmat.backends.openssl.backend import backend
 from cryptography.hazmat.primitives import serialization
@@ -2662,7 +2660,7 @@ class TestFunction(object):
         passphrase = b"foo"
         key = load_privatekey(FILETYPE_PEM, cleartextPrivateKeyPEM)
         pem = dump_privatekey(FILETYPE_PEM, key, GOOD_CIPHER, passphrase)
-        assert isinstance(pem, binary_type)
+        assert isinstance(pem, bytes)
         loadedKey = load_privatekey(FILETYPE_PEM, pem, passphrase)
         assert isinstance(loadedKey, PKey)
         assert loadedKey.type() == key.type()
@@ -2802,7 +2800,7 @@ class TestFunction(object):
             return passphrase
         key = load_privatekey(FILETYPE_PEM, cleartextPrivateKeyPEM)
         pem = dump_privatekey(FILETYPE_PEM, key, GOOD_CIPHER, cb)
-        assert isinstance(pem, binary_type)
+        assert isinstance(pem, bytes)
         assert called == [True]
         loadedKey = load_privatekey(FILETYPE_PEM, pem, passphrase)
         assert isinstance(loadedKey, PKey)
@@ -2982,7 +2980,7 @@ class TestNetscapeSPKI(_PKeyInteractionTestsMixin):
         """
         nspki = NetscapeSPKI()
         blob = nspki.b64_encode()
-        assert isinstance(blob, binary_type)
+        assert isinstance(blob, bytes)
 
 
 class TestRevoked(object):