diff --git a/tests/data_files/server10.key b/tests/data_files/server10.key
new file mode 100644
index 0000000..0088331
--- /dev/null
+++ b/tests/data_files/server10.key
@@ -0,0 +1,5 @@
+-----BEGIN EC PRIVATE KEY-----
+MHcCAQEEILBDMs7bRVxVg6ovTpf2zB9m+22jY7R3LNKRvCPfa6YJoAoGCCqGSM49
+AwEHoUQDQgAEHG336dql6qGcsnIZqAkcc63eFbvepuOzTwXobRAuOmk3l4A5wXX/
+vs5wAawLX1wUTUM/AESHmAZrJK9tq5So8g==
+-----END EC PRIVATE KEY-----