Procedure for establishing a common key for authorized...

Details Procedure for establishing a common key for authorized... Procedure for establishing a common key for authorized...

H - Electricity

04

L

H04L 9/14 (2006.01) H04L 9/08 (2006.01)

Patent

CA 2181972

Keys k are transmitted in enciphered form in order to establish keys for authorized persons; this is in part regulated by law. In order to comply with the requirements of such regulations and, at the same time, provide an adequate level of security, the present invention describes a procedure that is based on a combination of a key-controlled one-way function and a threshold procedure. This procedure can be used for many purposes; however, it is intended primarily for securing the transmission of a pay-type broadcast program (pay TV, pay radio).

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