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-rw-r--r--src/OpenSSL/crypto.py5
-rw-r--r--tests/test_crypto.py8
2 files changed, 12 insertions, 1 deletions
diff --git a/src/OpenSSL/crypto.py b/src/OpenSSL/crypto.py
index 8dec9a6..7f95d20 100644
--- a/src/OpenSSL/crypto.py
+++ b/src/OpenSSL/crypto.py
@@ -1367,7 +1367,10 @@ class X509:
:return: ``True`` if the certificate has expired, ``False`` otherwise.
:rtype: bool
"""
- time_string = self.get_notAfter().decode("utf-8")
+ time_string = self.get_notAfter()
+ if time_string is None:
+ raise ValueError("Unable to determine notAfter")
+ time_string = time_string.decode("utf-8")
not_after = datetime.datetime.strptime(time_string, "%Y%m%d%H%M%SZ")
return not_after < datetime.datetime.utcnow()
diff --git a/tests/test_crypto.py b/tests/test_crypto.py
index ea89f6c..8c19030 100644
--- a/tests/test_crypto.py
+++ b/tests/test_crypto.py
@@ -1968,6 +1968,14 @@ class TestX509(_PKeyInteractionTestsMixin):
cert.gmtime_adj_notAfter(2)
assert not cert.has_expired()
+ def test_has_expired_exception(self):
+ """
+ `X509.has_expired` throws ValueError if not-after time is not set
+ """
+ cert = X509()
+ with pytest.raises(ValueError):
+ cert.has_expired()
+
def test_root_has_not_expired(self):
"""
`X509.has_expired` returns `False` if the certificate's not-after time