1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/crypt.py b/Lib/crypt.py
index 46c3de8..de4a14a 100644
--- a/Lib/crypt.py
+++ b/Lib/crypt.py
@@ -98,7 +98,7 @@ def _add_method(name, *args, rounds=None):
         result = crypt('', salt)
     except OSError as e:
         # Not all libc libraries support all encryption methods.
-        if e.errno == errno.EINVAL:
+        if e.errno in {errno.EINVAL, errno.EPERM, errno.ENOSYS}:
             return False
         raise
     if result and len(result) == method.total_size: