Enhanced security design for cryptography in mobile communication systems

Enhanced security design for cryptography in mobile communication systems

  • CN 1,857,024 B
  • Filed: 09/10/2004
  • Issued: 09/28/2011
  • Est. Priority Date: 09/26/2003
  • Status: Active Grant
First Claim
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1. one kind has in service and to strengthen the method for the fail safe of protected communication based on the key agreement program in the mobile communications network of portable terminal of at least one basic cryptosecurity algorithm;

  • wherein said key agreement program provides the basic security key, and described method comprises the following steps;

    -selection is used for the enhancing pattern of the basic cryptosecurity algorithm of the communication between portable terminal and the network terminal;

    -according to the information of the selected algorithm of expression, change described basic security key, to produce the distinctive safe key of algorithm;

    -utilize the distinctive safe key of algorithm to use basic cryptosecurity algorithm, to strengthen the fail safe of protected communication in described mobile communications network as key input.

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