diff --git a/tools/tcg_rim_tool/src/main/java/hirs/swid/Main.java b/tools/tcg_rim_tool/src/main/java/hirs/swid/Main.java
index 4fccb799..c90b6b92 100644
--- a/tools/tcg_rim_tool/src/main/java/hirs/swid/Main.java
+++ b/tools/tcg_rim_tool/src/main/java/hirs/swid/Main.java
@@ -83,7 +83,7 @@ public class Main {
                         }
                         if (commander.isRfc3161()) {
                             gateway.setTimestampFormat("RFC3161");
-                        } else {
+                        } else if (commander.isRfc3339()) {
                             gateway.setTimestampFormat("RFC3339");
                         }
                         gateway.generateSwidTag(commander.getOutFile());
diff --git a/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagGateway.java b/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagGateway.java
index 83b7c756..481a61c6 100644
--- a/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagGateway.java
+++ b/tools/tcg_rim_tool/src/main/java/hirs/swid/SwidTagGateway.java
@@ -542,6 +542,8 @@ public class SwidTagGateway {
             doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
             marshaller.marshal(swidTag, doc);
             XMLSignatureFactory sigFactory = XMLSignatureFactory.getInstance("DOM");
+            List xmlObjectList = null;
+            String signatureId = null;
 
             Reference documentRef = sigFactory.newReference(
                     "",
@@ -552,13 +554,18 @@ public class SwidTagGateway {
                     null
             );
 
-            Reference timestampRef = sigFactory.newReference(
-                    "#TST",
-                    sigFactory.newDigestMethod(DigestMethod.SHA256, null)
-            );
             List<Reference> refList = new ArrayList<Reference>();
             refList.add(documentRef);
-            refList.add(timestampRef);
+
+            if (!timestampFormat.isEmpty()) {
+                Reference timestampRef = sigFactory.newReference(
+                        "#TST",
+                        sigFactory.newDigestMethod(DigestMethod.SHA256, null)
+                );
+                refList.add(timestampRef);
+                xmlObjectList = Collections.singletonList(createXmlTimestamp(doc, sigFactory));
+                signatureId = "RimSignature";
+            }
 
             SignedInfo signedInfo = sigFactory.newSignedInfo(
                     sigFactory.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE, (C14NMethodParameterSpec) null),
@@ -593,11 +600,11 @@ public class SwidTagGateway {
 
             DOMSignContext context = new DOMSignContext(privateKey, doc.getDocumentElement());
             XMLSignature signature = sigFactory.newXMLSignature(
-                        signedInfo,
-                        keyinfo,
-                        Collections.singletonList(createXmlTimestamp(doc, sigFactory)),
-                        "RimSignature",
-                        null
+                    signedInfo,
+                    keyinfo,
+                    xmlObjectList,
+                    signatureId,
+                    null
             );
             signature.sign(context);
         } catch (FileNotFoundException e) {
diff --git a/tools/tcg_rim_tool/src/main/java/hirs/swid/utils/Commander.java b/tools/tcg_rim_tool/src/main/java/hirs/swid/utils/Commander.java
index 9cf3d2d0..0dec9a9f 100644
--- a/tools/tcg_rim_tool/src/main/java/hirs/swid/utils/Commander.java
+++ b/tools/tcg_rim_tool/src/main/java/hirs/swid/utils/Commander.java
@@ -138,7 +138,7 @@ public class Commander {
         } else if (isRfc3339()) {
             sb.append("Timestamp format: RFC3339");
         } else {
-            sb.append("Timestamp format: defaulting to RFC3339");
+            sb.append("No timestamp included");
         }
         return sb.toString();
     }
diff --git a/tools/tcg_rim_tool/src/test/resources/generated_default_cert.swidtag b/tools/tcg_rim_tool/src/test/resources/generated_default_cert.swidtag
index 29193469..855718c1 100644
--- a/tools/tcg_rim_tool/src/test/resources/generated_default_cert.swidtag
+++ b/tools/tcg_rim_tool/src/test/resources/generated_default_cert.swidtag
@@ -2,7 +2,7 @@
 <SoftwareIdentity xmlns="http://standards.iso.org/iso/19770/-2/2015/schema.xsd" xmlns:ns2="http://www.w3.org/2000/09/xmldsig#" corpus="false" name="Example.com BIOS" patch="false" supplemental="false" tagId="94f6b457-9ac9-4d35-9b3f-78804173b65as" tagVersion="0" version="01" versionScheme="multipartnumeric" xml:lang="en">
   <Entity name="Example Inc" regid="http://Example.com" role="softwareCreator tagCreator"/>
   <Link href="https://Example.com/support/ProductA/firmware/installfiles" rel="installationmedia"/>
-  <Meta xmlns:n8060="http://csrc.nist.gov/ns/swid/2015-extensions/1.0" xmlns:rim="https://trustedcomputinggroup.org/wp-content/uploads/TCG_RIM_Model" n8060:colloquialVersion="Firmware_2019" n8060:edition="12" n8060:product="ProductA" n8060:revision="r2" rim:BindingSpec="PC Client RIM" rim:BindingSpecVersion="1.2" rim:PayloadType="direct" rim:firmwareManufacturerId="00213022" rim:firmwareManufacturerStr="BIOSVendorA" rim:firmwareModel="A0" rim:firmwareVersion="12" rim:pcURIGlobal="https://Example.com/support/ProductA/" rim:pcURILocal="/boot/tcg/manifest/switag/" rim:platformManufacturerId="00201234" rim:platformManufacturerStr="Example.com" rim:platformModel="ProductA" rim:platformVersion="01"/>
+  <Meta xmlns:n8060="http://csrc.nist.gov/ns/swid/2015-extensions/1.0" xmlns:rim="https://trustedcomputinggroup.org/wp-content/uploads/TCG_RIM_Model" n8060:colloquialVersion="Firmware_2019" n8060:edition="12" n8060:product="ProductA" n8060:revision="r2" rim:PayloadType="direct" rim:bindingSpec="PC Client RIM" rim:bindingSpecVersion="1.2" rim:firmwareManufacturerId="00213022" rim:firmwareManufacturerStr="BIOSVendorA" rim:firmwareModel="A0" rim:firmwareVersion="12" rim:pcURIGlobal="https://Example.com/support/ProductA/" rim:pcURIlocal="/boot/tcg/manifest/switag/" rim:platformManufacturerId="00201234" rim:platformManufacturerStr="Example.com" rim:platformModel="ProductA" rim:platformVersion="01"/>
   <Payload>
     <Directory name="rim">
       <File xmlns:SHA256="http://www.w3.org/2001/04/xmlenc#sha256" SHA256:hash="4479ca722623f8c47b703996ced3cbd981b06b1ae8a897db70137e0b7c546848" name="Example.com.BIOS.01.rimel" size="7549"/>
@@ -17,14 +17,14 @@
           <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
         </Transforms>
         <DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
-        <DigestValue>K3XoBeYvgJBAKl8z273sL7z38qLLVBKLfUPt/gPUzBI=</DigestValue>
+        <DigestValue>DJMc0n3VHHwU+F3HNpiY/l3EMcjRZAQOYlrjhD5v9qE=</DigestValue>
       </Reference>
     </SignedInfo>
-    <SignatureValue>cIl1gPsUyEj2gDv3HTWNFDVxtcBjz4Revxxf2LJejtOXQW8mGepZH8CnvgO7zCAbZYlYUZXjYZ9M&#13;
-jONVv8dcsAjVHRnP6YHywFfmSm8LUCwxsfuZQqn5jClqzu5VaqLzBhuJYvCpiEdIDJwDINQuORUB&#13;
-nzul1CWc3Sm1Ms2wjlIq5ctWWJcddhdyIOjl8/oD4EC5E2rOSfNcRMZxldXtie9iinFGVbr0YNE+&#13;
-+lQ7hAU+SyV8RMx9tGnnsO8otwV4ddF+OfemcbzWGYBenLs3A8ZqWZyTvWphCgGqDUbOLssYciCC&#13;
-mnYm5QOeh4QcE9H2kqTgZvcyCgPL/hDC7xhyjQ==</SignatureValue>
+    <SignatureValue>ojJ6v8ToxLWWekCKmBoZ+Yg2V4MYMPbKB9FjDs/QG/AMP+LKjnb55Z7FSLhC8+CvvShKPAoS9mv1&#13;
+QepwI17NEqbfnC1U4WH0u578A3J6wiHMXIDnIQqKAAXb8v2c/wjMDArzFl8CXmDA7HUDIt+3C4VC&#13;
+tA598YY7o0Hf6hK5qO8oWGQxXUKfpUwvtGLxHpbDWYFuVSPa+uk6OTzutt/QyzTERzxyO9Le1i6K&#13;
+nrpzh4lgHn6EfGs6HR1ffdHQ069q0bE61zDx0VC18nK9DmszW6p6FlMzApiTVW/4PiVt+dSFeVGR&#13;
+9///OdtxcoBCeofDDFPRyO+s+kY1pXd92Q3nfg==</SignatureValue>
     <KeyInfo>
       <KeyName>2fdeb8e7d030a2209daa01861a964fedecf2bcc1</KeyName>
     </KeyInfo>
diff --git a/tools/tcg_rim_tool/src/test/resources/generated_user_cert.swidtag b/tools/tcg_rim_tool/src/test/resources/generated_user_cert.swidtag
index 212a307f..eaf50f57 100644
--- a/tools/tcg_rim_tool/src/test/resources/generated_user_cert.swidtag
+++ b/tools/tcg_rim_tool/src/test/resources/generated_user_cert.swidtag
@@ -2,7 +2,7 @@
 <SoftwareIdentity xmlns="http://standards.iso.org/iso/19770/-2/2015/schema.xsd" xmlns:ns2="http://www.w3.org/2000/09/xmldsig#" corpus="false" name="Example.com BIOS" patch="false" supplemental="false" tagId="94f6b457-9ac9-4d35-9b3f-78804173b65as" tagVersion="0" version="01" versionScheme="multipartnumeric" xml:lang="en">
   <Entity name="Example Inc" regid="http://Example.com" role="softwareCreator tagCreator"/>
   <Link href="https://Example.com/support/ProductA/firmware/installfiles" rel="installationmedia"/>
-  <Meta xmlns:n8060="http://csrc.nist.gov/ns/swid/2015-extensions/1.0" xmlns:rim="https://trustedcomputinggroup.org/wp-content/uploads/TCG_RIM_Model" n8060:colloquialVersion="Firmware_2019" n8060:edition="12" n8060:product="ProductA" n8060:revision="r2" rim:BindingSpec="PC Client RIM" rim:BindingSpecVersion="1.2" rim:PayloadType="direct" rim:firmwareManufacturerId="00213022" rim:firmwareManufacturerStr="BIOSVendorA" rim:firmwareModel="A0" rim:firmwareVersion="12" rim:pcURIGlobal="https://Example.com/support/ProductA/" rim:pcURILocal="/boot/tcg/manifest/switag/" rim:platformManufacturerId="00201234" rim:platformManufacturerStr="Example.com" rim:platformModel="ProductA" rim:platformVersion="01"/>
+  <Meta xmlns:n8060="http://csrc.nist.gov/ns/swid/2015-extensions/1.0" xmlns:rim="https://trustedcomputinggroup.org/wp-content/uploads/TCG_RIM_Model" n8060:colloquialVersion="Firmware_2019" n8060:edition="12" n8060:product="ProductA" n8060:revision="r2" rim:PayloadType="direct" rim:bindingSpec="PC Client RIM" rim:bindingSpecVersion="1.2" rim:firmwareManufacturerId="00213022" rim:firmwareManufacturerStr="BIOSVendorA" rim:firmwareModel="A0" rim:firmwareVersion="12" rim:pcURIGlobal="https://Example.com/support/ProductA/" rim:pcURIlocal="/boot/tcg/manifest/switag/" rim:platformManufacturerId="00201234" rim:platformManufacturerStr="Example.com" rim:platformModel="ProductA" rim:platformVersion="01"/>
   <Payload>
     <Directory name="rim">
       <File xmlns:SHA256="http://www.w3.org/2001/04/xmlenc#sha256" SHA256:hash="4479ca722623f8c47b703996ced3cbd981b06b1ae8a897db70137e0b7c546848" name="Example.com.BIOS.01.rimel" size="7549"/>
@@ -17,14 +17,14 @@
           <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
         </Transforms>
         <DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
-        <DigestValue>K3XoBeYvgJBAKl8z273sL7z38qLLVBKLfUPt/gPUzBI=</DigestValue>
+        <DigestValue>DJMc0n3VHHwU+F3HNpiY/l3EMcjRZAQOYlrjhD5v9qE=</DigestValue>
       </Reference>
     </SignedInfo>
-    <SignatureValue>cIl1gPsUyEj2gDv3HTWNFDVxtcBjz4Revxxf2LJejtOXQW8mGepZH8CnvgO7zCAbZYlYUZXjYZ9M&#13;
-jONVv8dcsAjVHRnP6YHywFfmSm8LUCwxsfuZQqn5jClqzu5VaqLzBhuJYvCpiEdIDJwDINQuORUB&#13;
-nzul1CWc3Sm1Ms2wjlIq5ctWWJcddhdyIOjl8/oD4EC5E2rOSfNcRMZxldXtie9iinFGVbr0YNE+&#13;
-+lQ7hAU+SyV8RMx9tGnnsO8otwV4ddF+OfemcbzWGYBenLs3A8ZqWZyTvWphCgGqDUbOLssYciCC&#13;
-mnYm5QOeh4QcE9H2kqTgZvcyCgPL/hDC7xhyjQ==</SignatureValue>
+    <SignatureValue>ojJ6v8ToxLWWekCKmBoZ+Yg2V4MYMPbKB9FjDs/QG/AMP+LKjnb55Z7FSLhC8+CvvShKPAoS9mv1&#13;
+QepwI17NEqbfnC1U4WH0u578A3J6wiHMXIDnIQqKAAXb8v2c/wjMDArzFl8CXmDA7HUDIt+3C4VC&#13;
+tA598YY7o0Hf6hK5qO8oWGQxXUKfpUwvtGLxHpbDWYFuVSPa+uk6OTzutt/QyzTERzxyO9Le1i6K&#13;
+nrpzh4lgHn6EfGs6HR1ffdHQ069q0bE61zDx0VC18nK9DmszW6p6FlMzApiTVW/4PiVt+dSFeVGR&#13;
+9///OdtxcoBCeofDDFPRyO+s+kY1pXd92Q3nfg==</SignatureValue>
     <KeyInfo>
       <KeyValue>
         <RSAKeyValue>
diff --git a/tools/tcg_rim_tool/src/test/resources/generated_user_cert_embed.swidtag b/tools/tcg_rim_tool/src/test/resources/generated_user_cert_embed.swidtag
index f47230cf..5f0d13e5 100644
--- a/tools/tcg_rim_tool/src/test/resources/generated_user_cert_embed.swidtag
+++ b/tools/tcg_rim_tool/src/test/resources/generated_user_cert_embed.swidtag
@@ -2,7 +2,7 @@
 <SoftwareIdentity xmlns="http://standards.iso.org/iso/19770/-2/2015/schema.xsd" xmlns:ns2="http://www.w3.org/2000/09/xmldsig#" corpus="false" name="Example.com BIOS" patch="false" supplemental="false" tagId="94f6b457-9ac9-4d35-9b3f-78804173b65as" tagVersion="0" version="01" versionScheme="multipartnumeric" xml:lang="en">
   <Entity name="Example Inc" regid="http://Example.com" role="softwareCreator tagCreator"/>
   <Link href="https://Example.com/support/ProductA/firmware/installfiles" rel="installationmedia"/>
-  <Meta xmlns:n8060="http://csrc.nist.gov/ns/swid/2015-extensions/1.0" xmlns:rim="https://trustedcomputinggroup.org/wp-content/uploads/TCG_RIM_Model" n8060:colloquialVersion="Firmware_2019" n8060:edition="12" n8060:product="ProductA" n8060:revision="r2" rim:BindingSpec="PC Client RIM" rim:BindingSpecVersion="1.2" rim:PayloadType="direct" rim:firmwareManufacturerId="00213022" rim:firmwareManufacturerStr="BIOSVendorA" rim:firmwareModel="A0" rim:firmwareVersion="12" rim:pcURIGlobal="https://Example.com/support/ProductA/" rim:pcURILocal="/boot/tcg/manifest/switag/" rim:platformManufacturerId="00201234" rim:platformManufacturerStr="Example.com" rim:platformModel="ProductA" rim:platformVersion="01"/>
+  <Meta xmlns:n8060="http://csrc.nist.gov/ns/swid/2015-extensions/1.0" xmlns:rim="https://trustedcomputinggroup.org/wp-content/uploads/TCG_RIM_Model" n8060:colloquialVersion="Firmware_2019" n8060:edition="12" n8060:product="ProductA" n8060:revision="r2" rim:PayloadType="direct" rim:bindingSpec="PC Client RIM" rim:bindingSpecVersion="1.2" rim:firmwareManufacturerId="00213022" rim:firmwareManufacturerStr="BIOSVendorA" rim:firmwareModel="A0" rim:firmwareVersion="12" rim:pcURIGlobal="https://Example.com/support/ProductA/" rim:pcURIlocal="/boot/tcg/manifest/switag/" rim:platformManufacturerId="00201234" rim:platformManufacturerStr="Example.com" rim:platformModel="ProductA" rim:platformVersion="01"/>
   <Payload>
     <Directory name="rim">
       <File xmlns:SHA256="http://www.w3.org/2001/04/xmlenc#sha256" SHA256:hash="4479ca722623f8c47b703996ced3cbd981b06b1ae8a897db70137e0b7c546848" name="Example.com.BIOS.01.rimel" size="7549"/>
@@ -17,14 +17,14 @@
           <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
         </Transforms>
         <DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
-        <DigestValue>K3XoBeYvgJBAKl8z273sL7z38qLLVBKLfUPt/gPUzBI=</DigestValue>
+        <DigestValue>DJMc0n3VHHwU+F3HNpiY/l3EMcjRZAQOYlrjhD5v9qE=</DigestValue>
       </Reference>
     </SignedInfo>
-    <SignatureValue>cIl1gPsUyEj2gDv3HTWNFDVxtcBjz4Revxxf2LJejtOXQW8mGepZH8CnvgO7zCAbZYlYUZXjYZ9M&#13;
-jONVv8dcsAjVHRnP6YHywFfmSm8LUCwxsfuZQqn5jClqzu5VaqLzBhuJYvCpiEdIDJwDINQuORUB&#13;
-nzul1CWc3Sm1Ms2wjlIq5ctWWJcddhdyIOjl8/oD4EC5E2rOSfNcRMZxldXtie9iinFGVbr0YNE+&#13;
-+lQ7hAU+SyV8RMx9tGnnsO8otwV4ddF+OfemcbzWGYBenLs3A8ZqWZyTvWphCgGqDUbOLssYciCC&#13;
-mnYm5QOeh4QcE9H2kqTgZvcyCgPL/hDC7xhyjQ==</SignatureValue>
+    <SignatureValue>ojJ6v8ToxLWWekCKmBoZ+Yg2V4MYMPbKB9FjDs/QG/AMP+LKjnb55Z7FSLhC8+CvvShKPAoS9mv1&#13;
+QepwI17NEqbfnC1U4WH0u578A3J6wiHMXIDnIQqKAAXb8v2c/wjMDArzFl8CXmDA7HUDIt+3C4VC&#13;
+tA598YY7o0Hf6hK5qO8oWGQxXUKfpUwvtGLxHpbDWYFuVSPa+uk6OTzutt/QyzTERzxyO9Le1i6K&#13;
+nrpzh4lgHn6EfGs6HR1ffdHQ069q0bE61zDx0VC18nK9DmszW6p6FlMzApiTVW/4PiVt+dSFeVGR&#13;
+9///OdtxcoBCeofDDFPRyO+s+kY1pXd92Q3nfg==</SignatureValue>
     <KeyInfo>
       <X509Data>
         <X509SubjectName>CN=example.RIM.signer,OU=PCClient,O=Example,ST=VA,C=US</X509SubjectName>