Cryptography – Cellular telephone cryptographic authentication
Reexamination Certificate
2006-04-04
2006-04-04
Morse, Gregory A. (Department: 2134)
Cryptography
Cellular telephone cryptographic authentication
Reexamination Certificate
active
07023994
ABSTRACT:
The invention relates to a method for personalization of GSM chips. At least one subscriber identification character (TMSI) and a card number (ICCID) are stored in the memory area of said chips in addition to a secret key (KI) and other optional data for personalization purposes. The invention aims to eliminate an unnecessarily high degree of complexity linked to management of all card data in an authentication centre (AC) and to preserve secret chip data in a more secure manner. According to the invention, final data is only written on the chip when the subscriber logs into a subscriber network. One advantage is that only initial data is written into the card enabling the customer to contact the computer centre of the information provider. During first contact the final data is traded between the card and the computer centre and written into the card. The computer centre is simply required to manage cards which have really been issued to customers.
REFERENCES:
patent: 5557679 (1996-09-01), Julin et al.
patent: 5661806 (1997-08-01), Nevoux et al.
patent: 5793866 (1998-08-01), Brown et al.
patent: 5799086 (1998-08-01), Sudia
patent: 5883960 (1999-03-01), Maruyama et al.
patent: 6188899 (2001-02-01), Chatterjee et al.
patent: 195 27 715 (1995-07-01), None
patent: 0 481 714 (1992-04-01), None
patent: 0 562 890 (1993-08-01), None
patent: 0 820 206 (1996-07-01), None
patent: WO 93/07697 (1993-04-01), None
patent: WO 97/14258 (1997-04-01), None
Hildebrand Christa
Morse Gregory A.
Norris McLaughlin & Marcus PA
T-Mobile Deutschland GmbH
Tran Ellen C.
LandOfFree
Method and device for customer personalization of GSM chips does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for customer personalization of GSM chips, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for customer personalization of GSM chips will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3604847