CN101515851A

5G,4G,3G

Title

Method and apparatus for security in a data processing system

Application Number:

CN20091128921

Publication Date:

26-08-2009

Current Assignee:

Family ID:

Application Date:

08-10-2002

Declaring Company:

Publication Country:

US

Priority Date:

09-10-2001

Title

Method and apparatus for security in a data processing system

Application Number:

CN20091128921

Family ID:

Publication Country:

US

Publication Date:

26-08-2009

Application Date:

08-10-2002

Priority Date:

09-10-2001

Current Assignee:

Declaring Company:

Abstract  Abstract

The invention claims a method and apparatus for security in a data processing system. 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. The short-time key is available with each broadcast message wherein sufficient information to calculate the short-time key is provided in an Internet protocol header preceding the broadcast content. Broadcasts are then encrypted using the short-time key wherein the user decrypts the broadcast message using the short-time key.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.