Abstract: An integrated circuit card includes a memory storing service data relating to at least one service. At least part of the memory comprises data in file structures within one directory including at least a first file and a second file. The service data is grouped together in at least one service slot. Each service slot is divided into a profile part and a data part. Each profile part has a slot number and is arranged to function as an authorization mechanism. Each profile part is stored in the first file and comprises a unique application identifier. Each data part is at least partly stored in the second file and comprises data related to a given service. And the memory stores at least one key to protect write access to the first and second files. A secure application module and a terminal are also provided for controlling service actions to be carried out by the terminal on the integrated circuit card.

Abstract: A method of recovering and thus possibly completing interrupted smart card transactions includes providing a smart card that stores a first and a second pointer, the second pointer being used to indicate an update of the first pointer. In the case of an interruption of a smart card transaction, these pointers are be used to indicate whether a change of a card balance has taken place by the equality of the values of these pointers.

Abstract: A method is disclosed of modifying and/or extending the command set (READ, WRITE) of a smart card. Use is made of the attribute tables (100, 200, 300) associated with certain files and with the commands of the existing command set to modify the functions of the commands. Thus, non-standard functions may be implemented without the need to use additional, i.e. non-standard instructions.

Abstract: The invention relates to a method for protected transactions involving a so-called smart card and a terminal, such as a cash register. In order to prevent the smart card from simultaneously carrying out transactions with several terminals, the invention provides an authentication value which is used in the data exchange between the smart card and the terminal to uniquely identify subsequent steps of the transaction.

Abstract: A method and system for cancelling payments effected with an electronic payment device (11), such a smart card or IC card, in an off-line payment system including transmitting a check value, such as a random number, from a protected storage module of a terminal (12) to the payment device (11) and subsequently checking the check value in the payment device (11). After performing a positive check, a last transaction in a memory of the payment device (11) is cancelled, for example, by decrementing a pointer.

Abstract: The invention relates to a device (1) for processing data packets, comprising identification means (14) for identifying a data packet, processing means (11, 12) for cryptographically processing the data packet, and memory means (13) for storing information relating to the processing, in which device the processing means comprise at least a first (11) and a second (12) processing unit. Control means (14) are provided to assign, on the basis of the identification of a data packet, said data packet to one of the processing units and to process said data packet with the aid of information related to said data packet. Preferably, at least one processing unit (11; 12) is designed to encrypt or decrypt data packets, and the information relating to the processing comprises a key and a status of a processing procedure.

Abstract: Improved integrity of a payment system for paying for services or goods, for example, telephone facilities, through use of electronic payment cards. In any session to increase a card balance, a "flag" is placed ("1") on the payment card which indicates that the session must not be interrupted. After completion, the flag is removed again ("0"). A session to pay for the product or the service or to increase the balance can only be established if the flag is absent ("0") indicating that the last session to increase the balance was correctly completed. If, on the other hand, the flag is still "1" at the start of a session, a correction routine is first performed in which the previous session to increase the balance is then correctly concluded to prevent the flag being removed by fraud, the flag can only be removed by a central system (PSTN/ABS) through issurance of an authorized instruction.

Abstract: Improved integrity of a payment system for paying for services or goods, for example, telephone facilities, through use of electronic payment cards. In any session to increase a card balance, a “flag” is placed (“1”) on the payment card which indicates that the session must not be interrupted. After completion, the flag is removed again (“0”). A session to pay for the product or the service or to increase the balance can only be established if the flag is absent (“0”) indicating that the last session to increase the balance was correctly completed. If, on the other hand, the flag is still “1” at the start of a session, a correction routine is first performed in which the previous session to increase the balance is then correctly concluded to prevent the flag being removed by fraud, the flag can only be removed by a central system (PSTN/ABS) through issurance of an authorized instruction.