Improved security in cellular telephones

Details Improved security in cellular telephones Improved security in cellular telephones

H - Electricity

04

L

H04L 9/08 (2006.01) H04L 9/32 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2227096

A system for delivering a security code to a cellular telephone. The cellular telephone holds a key X. The cellular telephone requests that an Authorization Center, AC, assign a security code to the cellular telephone. The AC selects a security code, and encrypts it, such that key X is effective to de-crypt the code, yet the AC does not know key X.

Système permettant de transmettre un code de sécurité à un téléphone cellulaire, ayant une clé X. Le téléphone cellulaire demande qu'un centre d'autorisation AC lui attribue un code de sécurité. Le centre d'autorisation sélectionne et chiffre un code de sécurité, que la clé X permet de décoder, bien que le centre ne connaisse pas la clé X.

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