diff --git a/lib/util/nsshash.c b/lib/util/nsshash.c
--- a/lib/util/nsshash.c
+++ b/lib/util/nsshash.c
@@ -102,16 +102,19 @@ HASH_GetHashOidTagByHashType(HASH_HashTy
 SECOidTag
 HASH_GetHashOidTagByHMACOidTag(SECOidTag hmacOid)
 {
     SECOidTag hashOid = SEC_OID_UNKNOWN;
 
     switch (hmacOid) {
         /* no oid exists for HMAC_MD2 */
         /* NSS does not define a oid for HMAC_MD4 */
+        case SEC_OID_HMAC_MD5:
+            hashOid = SEC_OID_MD5;
+            break;
         case SEC_OID_HMAC_SHA1:
             hashOid = SEC_OID_SHA1;
             break;
         case SEC_OID_HMAC_SHA224:
             hashOid = SEC_OID_SHA224;
             break;
         case SEC_OID_HMAC_SHA256:
             hashOid = SEC_OID_SHA256;
@@ -145,16 +148,19 @@ HASH_GetHashOidTagByHMACOidTag(SECOidTag
 SECOidTag
 HASH_GetHMACOidTagByHashOidTag(SECOidTag hashOid)
 {
     SECOidTag hmacOid = SEC_OID_UNKNOWN;
 
     switch (hashOid) {
         /* no oid exists for HMAC_MD2 */
         /* NSS does not define a oid for HMAC_MD4 */
+        case SEC_OID_MD5:
+            hmacOid = SEC_OID_HMAC_MD5;
+            break;
         case SEC_OID_SHA1:
             hmacOid = SEC_OID_HMAC_SHA1;
             break;
         case SEC_OID_SHA224:
             hmacOid = SEC_OID_HMAC_SHA224;
             break;
         case SEC_OID_SHA256:
             hmacOid = SEC_OID_HMAC_SHA256;