| 摘要 |
Mobile telephone (1), for instance a GSM telephone with a corresponding SIM card (8) for authentication within a GSM network. The telephone is additionally provided with a reception slot (12) for a smart card (10) containing ciphering keys that on temporary insertion together with additional enciphering and deciphering circuits and programs in the telephone can make very secure end to end communication possible. In this way eavesdropping or accidental overhearing becomes practically impossible. <IMAGE> |
