METHOD FOR SECURING A CONTENT STORED ON A DATA MEDIUM BASED ON THE VERIFICATION OF AN INTEGRITY SIGNATURE, COMPUTER PROGRAM, AND CORRESPONDING DEVICE AND DATA MEDIUM

摘要

The invention relates to a method for securing a content stored on a data medium. The invention comprises the following steps: during a first phase for preparing the securing of said content: determining at least one first item of control information representative of at least one portion of the content; calculating an integrity signature from the first item of control information; storing the first item of control information and said integrity signature; during a second phase for playing back the content by a player: reading the first item of control information and the integrity signature (317); verifying the integrity signature (318) to determine whether the signature is correct; reading at least a portion of the content (320); determining at least one second item of control information from the playback; authenticating the content by correlating the first and second items of control information (321) whereby if the authentication is correct, proceed with the playback of the content.