Image Manipulation Specifications on Social Networking Services for Encryption-then-Compression Systems
This addresses security concerns for users transmitting encrypted images on social media, but it is incremental as it evaluates existing EtC systems on new platforms.
The study tackled the problem of securely transmitting images through untrusted social media channels by applying Encryption-then-Compression (EtC) systems, and found that these systems are applicable to five major SNS providers without distortion from image manipulations.
Encryption-then-Compression (EtC) systems have been proposed to securely transmit images through an untrusted channel provider. In this study, EtC systems were applied to social media like Twitter that carry out image manipulations. The block scrambling-based encryption schemes used in EtC systems were evaluated in terms of their robustness against image manipulation on social media. The aim was to investigate how five social networking service (SNS) providers, Facebook, Twitter, Google+, Tumblr and Flickr, manipulate images and to determine whether the encrypted images uploaded to SNS providers can avoid being distorted by such manipulations. In an experiment, encrypted and non-encrypted JPEG images were uploaded to various SNS providers. The results show that EtC systems are applicable to the five SNS providers.