Obviousness

I cannot perform an obviousness analysis of US patent 11188998 under 35 U.S.C. § 103 as requested. The provided patent text from Google Patents includes "Prior art keywords" (information, file, encrypted, encryption, augmented) and a "Prior art date" (2002-09-30). However, it does not list specific prior art references (e.g., patent numbers, journal articles, or other publications) that would be required to identify combinations of prior art and explain the motivation for a person having ordinary skill in the art to combine them. Without these specific references, a meaningful obviousness analysis cannot be conducted.