The ViewStateEncryptionMode enumeration has three values: Auto, Always, and Never. The default value is Auto. In this mode, ASP.NET will encrypt the ViewState for a page if any control on the page requests it.
Is it possible to encrypt the VIEWSTATE?
So encrypting the whole ViewState is faster than doing separate encryption operations if more than one control makes the request. As you would expect, in this mode ASP.NET will not encrypt the ViewState, even if the application is set for encryption and controls on the page have requested it.
What is VIEWSTATE and what are its attributes?
Let us first understand what is ViewState and what are its attributes. What is ViewState? ViewState is the method that the ASP.NET framework uses by default to preserve page and control values between web pages.
How to tamper with VIEWSTATE without machinekey or decryptionkey?
The first step is to identify the ViewState attribute. As shown in the figure below, Encryption is enabled which means it is not possible to tamper ViewState without MachineKey (Validationkey and Decryptionkey). For a more detailed description for IISDirPath and TargetPagePath.
Should I encrypt the VIEWSTATE of a page?
As you would expect, in this mode ASP.NET will not encrypt the ViewState, even if the application is set for encryption and controls on the page have requested it. If you know that no data involved in the page needs to be encrypted, then it may be safe to set the mode to Never.
What is the default value for the VIEWSTATE for a page?
The default value is Auto. In this mode, ASP.NET will encrypt the ViewState for a page if any control on the page requests it. Note that this means all of the ViewState is encrypted, not just the ViewState for the control that requests it. A large part of the performance cost associated with encryption is in the overhead.
Is openviewstate always encrypted?
ViewState is always encrypted. When working with sensitive data, it is a good practice to utilize encryption. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.
