fix: Dispose of the crypto transform (#99)

OleRoss · web-flow · commit b1f9acfa1241 · 2026-01-20T18:08:50.000+01:00
ICryptoTransform is disposable. this PR ensures we properly dispose
diff --git a/src/Darp.Ble/AesCmac.cs b/src/Darp.Ble/AesCmac.cs
@@ -31,7 +31,7 @@ public AesCmac(ReadOnlySpan<byte> key)
     /// <returns> The encrypted message. Always of length 16 </returns>
     public byte[] Encrypt(ReadOnlySpan<byte> message)
     {
-        ICryptoTransform encryptor = _aes.CreateEncryptor();
+        using ICryptoTransform encryptor = _aes.CreateEncryptor();
 
         // Step 1
         Span<byte> subKey1 = stackalloc byte[16];

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@ public AesCmac(ReadOnlySpan<byte> key)`
`31`	`31`	`/// <returns> The encrypted message. Always of length 16 </returns>`
`32`	`32`	`public byte[] Encrypt(ReadOnlySpan<byte> message)`
`33`	`33`	`{`
`34`		`- ICryptoTransform encryptor = _aes.CreateEncryptor();`
	`34`	`+ using ICryptoTransform encryptor = _aes.CreateEncryptor();`
`35`	`35`
`36`	`36`	`// Step 1`
`37`	`37`	`Span<byte> subKey1 = stackalloc byte[16];`