Miscelanious trials

IdentityShroud.Core.Tests/Security/AesGcmHelperTests.cs

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+using System.Security.Cryptography;
+using System.Text;
+using IdentityShroud.Core.Security;
+
+namespace IdentityShroud.Core.Tests.Security;
+
+public class AesGcmHelperTests
+{
+    [Fact]
+    public void EncryptDecryptCycleWorks()
+    {
+        string input = "Hello, world!";
+
+        var encryptionKey = RandomNumberGenerator.GetBytes(32);
+
+        var cypher = AesGcmHelper.EncryptAesGcm(Encoding.UTF8.GetBytes(input), encryptionKey);
+        var output = AesGcmHelper.DecryptAesGcm(cypher, encryptionKey);
+        
+        Assert.Equal(input, Encoding.UTF8.GetString(output));
+    }
+}