diff --git a/HIRS_AttestationCA/src/main/java/hirs/attestationca/AbstractAttestationCertificateAuthority.java b/HIRS_AttestationCA/src/main/java/hirs/attestationca/AbstractAttestationCertificateAuthority.java
index 63527556..fbb73305 100644
--- a/HIRS_AttestationCA/src/main/java/hirs/attestationca/AbstractAttestationCertificateAuthority.java
+++ b/HIRS_AttestationCA/src/main/java/hirs/attestationca/AbstractAttestationCertificateAuthority.java
@@ -94,6 +94,7 @@ import java.security.interfaces.RSAPublicKey;
 import java.security.spec.InvalidKeySpecException;
 import java.security.spec.MGF1ParameterSpec;
 import java.security.spec.RSAPublicKeySpec;
+import java.util.Base64;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.HashSet;
@@ -788,7 +789,7 @@ public abstract class AbstractAttestationCertificateAuthority
                 try {
                     support = SupportReferenceManifest.select(referenceManifestManager)
                             .includeArchived()
-                            .byHashCode(Hex.encodeHexString(messageDigest.digest(
+                            .byHashCode(Base64.getEncoder().encodeToString(messageDigest.digest(
                                     logFile.toByteArray())))
                             .getRIM();
                     if (support == null) {
@@ -830,7 +831,7 @@ public abstract class AbstractAttestationCertificateAuthority
                 try {
                     dbBaseRim = BaseReferenceManifest.select(referenceManifestManager)
                             .includeArchived()
-                            .byHashCode(Hex.encodeHexString(messageDigest.digest(
+                            .byHashCode(Base64.getEncoder().encodeToString(messageDigest.digest(
                                     swidFile.toByteArray())))
                             .getRIM();
                     if (dbBaseRim == null) {
@@ -864,7 +865,7 @@ public abstract class AbstractAttestationCertificateAuthority
         for (ByteString swidFile : dv.getSwidfileList()) {
             dbBaseRim = BaseReferenceManifest.select(referenceManifestManager)
                     .includeArchived()
-                    .byHashCode(Hex.encodeHexString(messageDigest.digest(
+                    .byHashCode(Base64.getEncoder().encodeToString(messageDigest.digest(
                             swidFile.toByteArray())))
                     .getRIM();
 
diff --git a/HIRS_AttestationCA/src/main/java/hirs/attestationca/service/SupplyChainValidationServiceImpl.java b/HIRS_AttestationCA/src/main/java/hirs/attestationca/service/SupplyChainValidationServiceImpl.java
index 691d1703..a30ded72 100644
--- a/HIRS_AttestationCA/src/main/java/hirs/attestationca/service/SupplyChainValidationServiceImpl.java
+++ b/HIRS_AttestationCA/src/main/java/hirs/attestationca/service/SupplyChainValidationServiceImpl.java
@@ -413,7 +413,8 @@ public class SupplyChainValidationServiceImpl implements SupplyChainValidationSe
             for (SwidResource swidRes : resources) {
                 supportReferenceManifest = SupportReferenceManifest.select(referenceManifestManager)
                         .byRimHash(swidRes.getHashValue()).getRIM();
-                if (swidRes.getName().equals(supportReferenceManifest.getFileName())) {
+                if (supportReferenceManifest !=null
+                        && swidRes.getName().equals(supportReferenceManifest.getFileName())) {
                     referenceManifestValidator.validateSupportRimHash(
                             supportReferenceManifest.getRimBytes(), swidRes.getHashValue());
                 } else {
@@ -422,7 +423,7 @@ public class SupplyChainValidationServiceImpl implements SupplyChainValidationSe
             }
             if (supportReferenceManifest == null) {
                 fwStatus = new AppraisalStatus(FAIL,
-                        "Support Reference Integrity Manifest\n");
+                        "Support Reference Integrity Manifest can not be found\n");
                 passed = false;
             }
 
diff --git a/HIRS_Utils/src/main/java/hirs/data/persist/ReferenceManifest.java b/HIRS_Utils/src/main/java/hirs/data/persist/ReferenceManifest.java
index 2368a88c..4e78e0cf 100644
--- a/HIRS_Utils/src/main/java/hirs/data/persist/ReferenceManifest.java
+++ b/HIRS_Utils/src/main/java/hirs/data/persist/ReferenceManifest.java
@@ -2,7 +2,6 @@ package hirs.data.persist;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.google.common.base.Preconditions;
-import org.apache.commons.codec.binary.Hex;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.hibernate.annotations.Type;
@@ -19,6 +18,7 @@ import javax.xml.bind.annotation.XmlRootElement;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Arrays;
+import java.util.Base64;
 import java.util.UUID;
 
 /**
@@ -139,7 +139,7 @@ public abstract class ReferenceManifest extends ArchivableEntity {
         if (digest == null) {
             this.rimHash = "";
         } else {
-            this.rimHash = Hex.encodeHexString(
+            this.rimHash = Base64.getEncoder().encodeToString(
                     digest.digest(rimBytes));
         }
     }