Add test for des_key_check_weak()
diff --git a/tests/suites/test_suite_des.data b/tests/suites/test_suite_des.data
index 7291649..559d5de 100644
--- a/tests/suites/test_suite_des.data
+++ b/tests/suites/test_suite_des.data
@@ -1,3 +1,15 @@
+DES check weak key #1
+des_check_weak:"0101010101010101":1
+
+DES check weak key #2
+des_check_weak:"FEE0FEE0FEF1FEF1":1
+
+DES check weak key #3
+des_check_weak:"0101010101010100":0
+
+DES check weak key #4
+des_check_weak:"EEE0FEE0FEF1FEF1":0
+
DES Encrypt OpenSSL Test Vector #1
des_encrypt_ecb:"0000000000000000":"0000000000000000":"8CA64DE9C1B123A7"