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>