diff --git a/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagConstants.java b/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagConstants.java
index 07fdc9e9..218578e8 100644
--- a/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagConstants.java
+++ b/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagConstants.java
@@ -74,9 +74,13 @@ public class SwidTagConstants {
     
     public static final String NIST_NS = "http://csrc.nist.gov/ns/swid/2015-extensions/1.0";
     public static final String TCG_NS =  "https://trustedcomputinggroup.org/wp-content/uploads/TCG_RIM_Model";
+    public static final String RFC3161_NS = "https://www.ietf.org/rfc/rfc3161.txt";
+    public static final String RFC3339_NS = "https://www.ietf.org/rfc/rfc3339.txt";
     
     public static final String N8060_PFX = "n8060";
     public static final String RIM_PFX = "rim";
+    public static final String RCF3161_PFX = "rcf3161";
+    public static final String RCF3339_PFX = "rcf3339";
 
     public static final QName _SHA256_HASH = new QName(
             "http://www.w3.org/2001/04/xmlenc#sha256", HASH, "SHA256");
@@ -128,6 +132,9 @@ public class SwidTagConstants {
             NIST_NS, "envVarSuffix", N8060_PFX);
     public static final QName _N8060_PATHSEPARATOR = new QName(
             NIST_NS, "pathSeparator", N8060_PFX);
-
+/*
+    public static final QName = new QName();
+    public static final QName = new QName();
+*/
     public static final String CA_ISSUERS = "1.3.6.1.5.5.7.48.2";
 }