Software developer can turn off encryption for an individual page using ViewStateEncryption-Mode property of the Page directive:
<%@Page ViewStateEncryptionMode=”Never”>
The developer can set the same attribute in a configuration file:
<configuration xmlns =https://scemas.microsoft.com/.NetConfiguration/V2.0>
<system.web>
<pages viewStateEncryptionMode=”Never”>
…
</system.web>
</configuration>