Add AsnHelper.GetBlob

Author: iamcarbon

Test/Extensions/AsnHelper.cs

@@ -0,0 +1,16 @@
+using System.Formats.Asn1;
+
+namespace fido2_net_lib
+{
+    public static class AsnHelper
+    {
+        public static byte[] GetBlob(byte[] input)
+        {
+            var writer = new AsnWriter(AsnEncodingRules.BER);
+
+            writer.WriteOctetString(input);
+
+            return writer.Encode();
+        }
+    }
+}

Test/Fido2Tests.cs

@@ -9,7 +9,6 @@
 using System.Text;
 using System.Text.Json;
 using System.Threading.Tasks;
-using Asn1;
 using Fido2NetLib;
 using Fido2NetLib.Objects;
 using Microsoft.Extensions.Caching.Distributed;
@@ -21,15 +20,13 @@
 
 namespace fido2_net_lib.Test
 {
-
     // todo: Create tests and name Facts and json files better.
     public class Fido2Tests
     {
         private static readonly IMetadataService _metadataService;
         private static readonly Fido2Configuration _config;
         public static readonly List<(COSE.KeyType, COSE.Algorithm, COSE.EllipticCurve)> _validCOSEParameters;
 
-
         static Fido2Tests()
         {
             var services = new ServiceCollection();
@@ -180,7 +177,7 @@ public Attestation()
 
                 _attestationObject = CBORObject.NewMap();
 
-                _asnEncodedAaguid = AsnElt.MakeBlob(AttestedCredentialData.AaGuidToBigEndian(_aaguid)).Encode();
+                _asnEncodedAaguid = AsnHelper.GetBlob(AttestedCredentialData.AaGuidToBigEndian(_aaguid));
 
                 idFidoGenCeAaguidExt = new X509Extension(oidIdFidoGenCeAaguid, _asnEncodedAaguid, false);
             }