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Method for providing a program module in a communications system

  • US 7,502,367 B2
  • Filed: 07/19/2001
  • Issued: 03/10/2009
  • Est. Priority Date: 07/19/2000
  • Status: Active Grant
First Claim
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1. A method for providing a program module in a communications system, comprising:

  • making the program module available from a server,transmitting the program module to a subscriber,calculating a checking criterion every time the program module is transmitted, the checking criterion being separately calculated in a security device and at the subscriber, the checking criterion being calculated based on the contents of the program module and based on an individual key associated with the subscriber, andcomparing the checking criterion calculated in the security device with the checking criterion calculated at the subscriber in order to determine whether errors are contained in the program module received by the subscriber.

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