Handle the HSM supporting no mechanisms

Fixes #2
pyauth · Jun 28, 2017 · de2ca3b · de2ca3b
1 parent c8c7520
commit de2ca3b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/pkcs11/_pkcs11.pyx b/pkcs11/_pkcs11.pyx
@@ -188,6 +188,9 @@ class Slot(types.Slot):
 
         assertRV(C_GetMechanismList(self.slot_id, NULL, &count))
 
+        if count == 0:
+            return set()
+
         cdef CK_MECHANISM_TYPE [:] mechanisms = CK_ULONG_buffer(count)
 
         assertRV(C_GetMechanismList(self.slot_id, &mechanisms[0], &count))