fix: handle null and malformed Secret

Intersect.Server/Web/Net7/ApiService.AppSettings.cs

@@ -87,9 +87,9 @@ private static void ValidateConfiguration()
                 TokenGenerationOptions.DefaultRefreshTokenLifetime;
         }
 
-        if (apiConfiguration.TokenGenerationOptions.SecretData.Length < 64)
+        if (apiConfiguration.TokenGenerationOptions.Secret.Length < 128)
         {
-            apiConfiguration.TokenGenerationOptions.SecretData = default;
+            apiConfiguration.TokenGenerationOptions.Secret = default;
             if (apiConfiguration.TokenGenerationOptions.Secret == default)
             {
                 throw new UnreachableException("This should be automatically re-generated.");

Intersect.Server/Web/Net7/Configuration/TokenGenerationOptions.cs

@@ -1,6 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.Security.Cryptography;
-using System.Text;
+using Intersect.Logging;
 
 namespace Intersect.Server.Web.Configuration;
 
@@ -29,7 +29,25 @@ public class TokenGenerationOptions
     public string Secret
     {
         get => Convert.ToHexString(SecretData ??= RandomNumberGenerator.GetBytes(64));
-        set => SecretData = string.IsNullOrWhiteSpace(value) ? default : Convert.FromHexString(value);
+        set
+        {
+            if (string.IsNullOrWhiteSpace(value))
+            {
+                SecretData = default;
+                return;
+            }
+
+            try
+            {
+                value = value.Trim();
+                SecretData = Convert.FromHexString(value.Trim());
+            }
+            catch (Exception exception)
+            {
+                Log.Error(exception, $"Failed to parse secret (should be hex), value was {value.Length} characters long");
+                SecretData = default;
+            }
+        }
     }
 
     [Newtonsoft.Json.JsonIgnore]