| 摘要 |
PCT No. PCT/SE92/00656 Sec. 371 Date Mar. 30, 1994 Sec. 102(e) Date Mar. 30, 1994 PCT Filed Sep. 23, 1992 PCT Pub. No. WO93/07697 PCT Pub. Date Apr. 15, 1993Personalization of an active so-called SIM card for a mobile telephone system of the GSM type is effected in a place connected to the central computer of the system via a communication network. The card identity IMSI and card authentication key Ki are transferred in line-encrypted form to terminal equipment in that place, where the card is inserted in a reader. After line decryption, the result thereof is transferred to the card in a manner to prevent unauthorized listening-in. This can be done in a safety box or by double encryption of IMSI and Ki, the decryption thereof being performed within the card by means of a unique card key Ksim. |
