APPARATUS AND METHODS OF PREVENTING AN ADULTERATION ATTACK ON A CONTENT SCREENING ALGORITHM

摘要

A method includes the steps of identifying (100) content (12) to be downloaded, determining (120) a total number of sections of a predetermined duration of time in the content to be downloaded, and screening (130) a predetermined number of sections of the total number of sections to determine whether the predetermined number of sections verify correctly through the screening algorithm. The number of predetermined sections screened during the screening step of the method of preventing an attack on a screening algorithm is two for content having a duration of three minutes or less and is incremented by one for each one minute of duration over the initial three minutes. Also an apparatus and a computer program.