METHOD AND APPARATUS FOR TRANSITION OF ENCRYPTION KEY DURING AN ONGOING MEDIA COMMUNICATION SESSION

摘要

Disclosed embodiments to encrypt media using a current media encryption key (MEK), and requesting a new MEK, and provides a method and apparatus for receiving the new MEK. The method is converted from the current MEK to the new MEK using the new MEK and a step of continuing to encrypt the media more. In another embodiment, the method provides a step for decrypting media during an ongoing media communication session, the method receives the encrypted media, provides for decrypting the encrypted media using the new MEK. The method is received that indicates that the current on the basis of the associated expiration time of MEK current MEK is requesting a new MEK prior to expiration, and receiving the new MEK, the encrypted media is encrypted using the current MEK or the new MEK MEK based on the indication flag (MIF) to provide a still further step of decrypting the encrypted media. ; Encryption key, a media communication session.