use aes = new AesCryptoServiceProvider (KeySize = aesKeySize)
new CryptoStream (inputStream, aes.CreateDecryptor (key, iv), CryptoStreamMode.Read)
use aes = new AesCryptoServiceProvider (KeySize = aesKeySize)
new CryptoStream (inputStream, aes.CreateDecryptor (key, iv), CryptoStreamMode.Read)