title: What is the length in bytes of AesCryptoServiceProvider GenerateIV()?
body: <pre><code>AesCryptoServiceProvider aesAlg = new AesCryptoServiceProvider()
  var iv = aesAlg.GenerateIV();
  </code></pre>
  
  <p>Do you know what the length of iv? Is it fixed with byte[16]?</p>
  
  <p>Another question is: what is the length requirement of initialization vector of AesCryptoServiceProvider?</p>