Add support for X.520 uniqueIdentifier
diff --git a/library/oid.c b/library/oid.c
index ad45a3d..b616d7e 100644
--- a/library/oid.c
+++ b/library/oid.c
@@ -236,6 +236,10 @@
         "DC",
     },
     {
+        { ADD_LEN( OID_AT_UNIQUE_IDENTIFIER ), "id-at-uniqueIdentifier",    "Unique Identifier" },
+        "uniqueIdentifier",
+    },
+    {
         { NULL, 0, NULL, NULL },
         NULL,
     }