| 摘要 |
The process involves encrypting data to be protected by encryption algorithm using an encryption key (K1), where the key is data present in a subscriber identification module (SIM) card. The encrypted data is stored in a memory module (501) of an external protecting unit (500) that is external to a mobile telephone (1). The key (K1) is a serial number of a SIM card (2) of the telephone (1). |
