Chip card security module for improving the security of secret or secure transactions, whereby a secret relationship is established between an end user terminal and the chip card for transmission of secret data between the two

摘要

Security module, especially a chip card (1), for carrying out secret electronic transactions comprises: first connection means (2) for data communication with a data processing unit (6, 7); second connection means (3) for data communication with an end-user terminal (4), whereby there is a secret relationship between user terminal and chip card; and a control unit that controls the transmission of secret or protected information between the user terminal and the second connection means. An Independent claim is made for a method for carrying out secure or secret electronic transactions between an end user terminal and a data processing unit.