  In dealing with altered visual multimedia content, also referred to as fake
news, we present a ready-to-deploy extension of the current public key
infrastructure (PKI), to provide an endorsement and integrity check platform
for newsworthy visual multimedia content. PKI, which is primarily used for Web
domain authentication, can directly be utilized with any visual multimedia
file. Unlike many other fake news researches that focus on technical multimedia
data processing and verification, we enable various news organizations to use
our developed program to certify/endorse a multimedia news content when they
believe this news piece is truthiness and newsworthy. Our program digitally
signs the multimedia news content with the news organization's private key, and
the endorsed news content can be posted not only by the endorser, but also by
any other websites. By installing a web browser extension developed by us, an
end user can easily verify whether a multimedia news content has been endorsed
and by which organization. During verification, our browser extension will
present to the end user a floating logo next to the image or video. This logo,
in the shape of a shield, will show whether the image has been endorsed, by
which news organization, and a few more pieces of essential text information of
the news multimedia content. The proposed system can be easily integrated to
other closed-web system such as social media networks and easily applied to
other non-visual multimedia files.
