发明公开
EP2317414A1 Method and apparatus for secure data transmission in a mobile communication system 审中-公开
VERFAHREN UND VORRICHTUNGFÜRSICHEREDATENÜBERTRAGUNGIN EINEM MOBILKOMMUNIKATIONSSYSTEM

Method and apparatus for secure data transmission in a mobile communication system
摘要:
Method and apparatus for secure transmissions. Each user is provided a registration key. A long-time updated broadcast key is encrypted using the registration key and provided periodically to a user. A short-time updated key is encrypted using the broadcast key and provided periodically to a user. Broadcasts are then encrypted using the short-time key, wherein the user decrypts the broadcast message using the short-time key. One embodiment provides link layer content encryption. Another embodiment provides end-to-end encryption.
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