1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/src/asn1/DerUTF8String.cs b/crypto/src/asn1/DerUTF8String.cs
index a9f35abda..965a8ebf8 100644
--- a/crypto/src/asn1/DerUTF8String.cs
+++ b/crypto/src/asn1/DerUTF8String.cs
@@ -69,6 +69,21 @@ namespace Org.BouncyCastle.Asn1
             return (DerUtf8String)Meta.Instance.GetContextInstance(taggedObject, declaredExplicit);
         }
 
+        public static DerUtf8String GetOptional(Asn1Encodable element)
+        {
+            if (element == null)
+                throw new ArgumentNullException(nameof(element));
+            if (element is DerUtf8String derUtf8String)
+                return derUtf8String;
+            if (element is IAsn1Convertible asn1Convertible && !(element is Asn1Object))
+            {
+                Asn1Object asn1Object = asn1Convertible.ToAsn1Object();
+                if (asn1Object is DerUtf8String converted)
+                    return converted;
+            }
+            return null;
+        }
+
         private readonly byte[] m_contents;
 
         public DerUtf8String(string str)