Understanding Session State Protection

B.

Session State Protection in Oracle Application Express (APEX) is a security feature that ensures the integrity of session state data by preventing unauthorized changes to the data. Session state data includes the values of items on pages, which are stored in session state tables in the database.

Option A states that Session State Protection saves sensitive data in Oracle APEX session state tables in encrypted form, stopping users from tampering with the data. However, this is not completely accurate. Session state data is not always sensitive, and Session State Protection does not encrypt the data. Instead, it uses checksums to detect tampering.

Option B mentions checksums, which are a key part of Session State Protection. Checksums are unique values generated by an algorithm based on the contents of the data being protected. When a user submits a page, the checksums are compared to the checksums generated when the page was rendered. If the checksums do not match, it indicates that the data has been tampered with and the user is redirected to an error page.

Option C is the correct answer. It correctly states that Session State Protection uses checksums to prevent alteration of session state, and also clarifies that the data is not encrypted. The Page Access Protection attributes and Session State Protection item attributes with checksums work together to ensure that session state data remains intact and unaltered.

Option D is incorrect because Session State Protection does not encrypt the values supplied in the URL. However, Oracle APEX does provide URL encryption as a separate feature.

In summary, Session State Protection in Oracle APEX uses checksums to ensure the integrity of session state data, preventing unauthorized changes to the data. Checksums are generated based on the contents of the data being protected and are compared when a user submits a page to detect any tampering.