title: Are account names (kSecAttrAccount) encrypted in iOS keychain?
body: <p>Apple's <a href="http://developer.apple.com/library/ios/#samplecode/GenericKeychain/Listings/Classes_KeychainItemWrapper_m.html" rel="noreferrer">GenericKeychain</a> example saves a username and password in the iOS keychain.  It does this using <code>kSecAttrAccount</code> for the username, and <code>kSecValueData</code> for the password.</p>
  
  <p>Are all data items placed in the keychain encrypted, so including the <code>kSecAttrAccount</code>/username in this example?</p>
  
  <p>I'm asking because I don't want account names to be exposed.</p>