new file mode 100644

@@ -0,0 +1,18 @@

+diff --git a/binding.py b/binding2.py

+index 39750ab..096faf5 100644

+--- a/src/cryptography/hazmat/bindings/openssl/binding.py

+@@ -111,7 +111,12 @@ class Binding(object):

+ 

+     @classmethod

+     def _register_osrandom_engine(cls):

+-        _openssl_assert(cls.lib, cls.lib.ERR_peek_error() == 0)

++        # Clear any errors extant in the queue before we start. In many

++        # scenarios other things may be interacting with OpenSSL in the same

++        # process space and it has proven untenable to assume that they will

++        # reliably clear the error queue. Once we clear it here we will

++        # error on any subsequent unexpected item in the stack.

++        cls.lib.ERR_clear_error()

+         cls._osrandom_engine_id = cls.lib.Cryptography_osrandom_engine_id

+         cls._osrandom_engine_name = cls.lib.Cryptography_osrandom_engine_name

+         result = cls.lib.Cryptography_add_osrandom_engine()

@@ -1,9 +1,10 @@

 %{!?python_sitelib: %define python_sitelib %(python -c "from distutils.sysconfig import get_python_lib;print(get_python_lib())")}

 %{!?python3_sitelib: %define python3_sitelib %(python3 -c "from distutils.sysconfig import get_python_lib;print(get_python_lib())")}

+

 Summary:        Python cryptography library

 Name:           python-cryptography

 Version:        1.7.2

-Release:        1%{?dist}

+Release:        2%{?dist}

 Url:            https://cryptography.io

 License:        ASL 2.0

 Group:          Development/Languages/Python

@@ -11,6 +12,8 @@ Vendor:         VMware, Inc.

 Distribution:   Photon

 Source0:        https://pypi.io/packages/source/c/cryptography/cryptography-%{version}.tar.gz

 %define sha1    cryptography=2b5bc62fda71992633f83164b1a74c16a784acdf

+#https://github.com/pyca/cryptography/pull/3278/commits/6779428e804d17cfb9f23a618b38e1089de93bdd

+Patch0:         clear_error_queue_at_startup.patch

 BuildRequires:  python2

 BuildRequires:  python2-libs

 BuildRequires:  python2-devel

@@ -21,6 +24,10 @@ Requires:       openssl

 Requires:       python-cffi

 Requires:       python2

 Requires:       python2-libs

+Requires:       python-idna

+Requires:       python-pyasn1

+Requires:       python-ipaddress

+Requires:       python-setuptools

 %description

 Cryptography is a Python library which exposes cryptographic recipes and primitives.

@@ -34,6 +41,9 @@ BuildRequires:  python3-cffi

 Requires:       python3

 Requires:       python3-libs

 Requires:       python3-cffi

+Requires:       python3-idna

+Requires:       python3-pyasn1

+Requires:       python3-six

 %description -n python3-cryptography

@@ -41,6 +51,7 @@ Python 3 version.

 %prep

 %setup -q -n cryptography-%{version}

+%patch0 -p1

 %build

 python setup.py build

@@ -59,6 +70,8 @@ python3 setup.py install --prefix=%{_prefix} --root=%{buildroot}

 %{python3_sitelib}/*

 %changelog

+*   Mon Apr 03 2017 Xiaolin Li <xiaolinl@vmware.com> 1.7.2-2

+-   Appy patch Refactor binding initialization to clear error queue at startup.

 *   Thu Feb 02 2017 Xiaolin Li <xiaolinl@vmware.com> 1.7.2-1

 -   Updated to version 1.7.2 and added python3 package.

 *   Tue May 24 2016 Priyesh Padmavilasom <ppadmavilasom@vmware.com> 1.2.3-2