fix: add preprocessor directives

src/StevanFreeborn.Extensions.Configuration.Secure/Cryptography/AesCryptoProvider.cs

@@ -28,7 +28,12 @@ internal sealed class AesCryptoProvider(IEncryptionKeyProvider keyProvider) : IC
 
     var cipherBytes = new byte[plainBytes.Length];
 
+#if NETSTANDARD2_1
     using var aesGcm = new AesGcm(key);
+#else
+    using var aesGcm = new AesGcm(key, TagSize);
+#endif
+
     aesGcm.Encrypt(nonce, plainBytes, cipherBytes, tag);
 
     var combinedBytes = new byte[NonceSize + TagSize + plainBytes.Length];
@@ -51,7 +56,7 @@ internal sealed class AesCryptoProvider(IEncryptionKeyProvider keyProvider) : IC
 
     if (combinedBytes.Length < NonceSize + TagSize)
     {
-      throw new CryptographicException($"Invalid playload. {nameof(cipherText)} is not of expected length");
+      throw new CryptographicException($"Invalid payload. {nameof(cipherText)} is not of expected length");
     }
 
     var nonce = combinedBytes[..NonceSize];
@@ -59,7 +64,12 @@ internal sealed class AesCryptoProvider(IEncryptionKeyProvider keyProvider) : IC
     var cipherBytes = combinedBytes[(NonceSize + TagSize)..];
     var plainBytes = new byte[cipherBytes.Length];
 
+#if NETSTANDARD2_1
     using var aesGcm = new AesGcm(key);
+#else
+    using var aesGcm = new AesGcm(key, TagSize);
+#endif
+
     aesGcm.Decrypt(nonce, cipherBytes, tag, plainBytes);
 
     return Encoding.UTF8.GetString(plainBytes);

src/StevanFreeborn.Extensions.Configuration.Secure/Cryptography/MachineIdKeyProvider.cs

@@ -11,7 +11,11 @@ internal sealed class MachineIdKeyProvider(IMachineIdKeyGenerator generator) : I
   {
     var machineId = _generator.GetId();
     var @bytes = Encoding.UTF8.GetBytes(machineId);
+#if NET5_0_OR_GREATER
+    return SHA256.HashData(@bytes);
+#else
     using var sha256 = SHA256.Create();
     return sha256.ComputeHash(@bytes);
+#endif
   }
 }