1 files changed, 56 insertions, 0 deletions
diff --git a/tests/hazmat/backends/test_openssl.py b/tests/hazmat/backends/test_openssl.py
index 6a2e8a77..0f2c80a6 100644
--- a/tests/hazmat/backends/test_openssl.py
+++ b/tests/hazmat/backends/test_openssl.py
@@ -4,6 +4,7 @@
 
 from __future__ import absolute_import, division, print_function
 
+import datetime
 import os
 import subprocess
 import sys
@@ -14,6 +15,7 @@ import pretend
 import pytest
 
 from cryptography import utils
+from cryptography import x509
 from cryptography.exceptions import InternalError, _Reasons
 from cryptography.hazmat.backends.interfaces import RSABackend
 from cryptography.hazmat.backends.openssl.backend import (
@@ -34,6 +36,20 @@ from ..primitives.test_ec import _skip_curve_unsupported
 from ...utils import load_vectors_from_file, raises_unsupported_algorithm
 
 
+def skip_if_libre_ssl(openssl_version):
+    if u'LibreSSL' in openssl_version:
+        pytest.skip("LibreSSL hard-codes RAND_bytes to use arc4random.")
+
+
+class TestLibreSkip(object):
+    def test_skip_no(self):
+        assert skip_if_libre_ssl(u"OpenSSL 0.9.8zf 19 Mar 2015") is None
+
+    def test_skip_yes(self):
+        with pytest.raises(pytest.skip.Exception):
+            skip_if_libre_ssl(u"LibreSSL 2.1.6")
+
+
 @utils.register_interface(Mode)
 class DummyMode(object):
     name = "dummy-mode"
@@ -216,6 +232,19 @@ class TestOpenSSL(object):
         bn = backend._int_to_bn(0)
         assert backend._bn_to_int(bn) == 0
 
+    def test_actual_osrandom_bytes(self, monkeypatch):
+        skip_if_libre_ssl(backend.openssl_version_text())
+        sample_data = (b"\x01\x02\x03\x04" * 4)
+        length = len(sample_data)
+
+        def notrandom(size):
+            assert size == length
+            return sample_data
+        monkeypatch.setattr(os, "urandom", notrandom)
+        buf = backend._ffi.new("char[]", length)
+        backend._lib.RAND_bytes(buf, length)
+        assert backend._ffi.buffer(buf)[0:length] == sample_data
+
 
 class TestOpenSSLRandomEngine(object):
     def teardown_method(self, method):
@@ -478,6 +507,33 @@ class TestOpenSSLCreateX509CSR(object):
             backend.create_x509_csr(object(), private_key, hashes.SHA1())
 
 
+class TestOpenSSLSignX509Certificate(object):
+    def test_requires_certificate_builder(self):
+        private_key = RSA_KEY_2048.private_key(backend)
+
+        with pytest.raises(TypeError):
+            backend.sign_x509_certificate(object(), private_key, DummyHash())
+
+    def test_checks_for_unsupported_extensions(self):
+        private_key = RSA_KEY_2048.private_key(backend)
+        builder = x509.CertificateBuilder().subject_name(x509.Name([
+            x509.NameAttribute(x509.OID_COUNTRY_NAME, u'US'),
+        ])).public_key(
+            private_key.public_key()
+        ).serial_number(
+            777
+        ).not_valid_before(
+            datetime.datetime(1999, 1, 1)
+        ).not_valid_after(
+            datetime.datetime(2020, 1, 1)
+        ).add_extension(
+            x509.InhibitAnyPolicy(0), False
+        )
+
+        with pytest.raises(NotImplementedError):
+            builder.sign(private_key, hashes.SHA1(), backend)
+
+
 class TestOpenSSLSerialisationWithOpenSSL(object):
     def test_pem_password_cb_buffer_too_small(self):
         ffi_cb, cb = backend._pem_password_cb(b"aa")