C# - Setting & Zeroizing Unmanaged Memory Using Pointer

Unmanaged Memory Setting

Marshal.Copy(byte[] source, int startIndex, IntPtr ptrHandle, int endIndex);

Unmanaged Memory Zeroizing

// IntPtr ptrHandle;
byte[] zeroBytes = new byte[1024];
Marshal.Copy(zeroBytes , 0, ptrHandle, zeroBytes.Length - 1);