| 摘要 |
Authentication method between a first IC card (1) and a second IC card (2) interconnected through a terminal (3) comprising the step of: transmitting an identification number (2sn) from the second IC card (2) to the first IC Card (1) for deriving and storing a key (1K) in the first IC Card (1); generating and storing an authentication number (1rand) in the first (1) IC Card and transmitting it to the second (2) IC Card; encrypting the authentication number (1rand) in an encrypted authentication number (enc-rand), inside the second (2) IC Card, and transmitting it to the first (1) IC Card; decrypting, through the key derived (1K), the encrypted authentication number (enc-rand) and comparing it with the authentication number (1rand). The second IC Card (2) is authorized if the encrypted authentication number (enc-rand), in the first IC Card (1), is equal to the authentication number (1rand). At least one transmission included in the above cited steps comprises one or more identification and/or authentication number intended to authorize the first IC Card (1) from the second IC Card (2). The identification and/or authentication number comprises a reverse authentication number (rev-rand). |
