摘要:
The method of loading applications programs into a memory card reader having a microprocessor, connected by telephone to a server center, and suitable for executing these applications is such that the applications programs are stored in the memories of cards entitled to said applications while corresponding application pointers are stored in the server center, with the method consisting, once a card has been inserted in the reader, in setting up a telephone call from the reader to the server, in transferring the pointer for the application requested by the reader over the telephone line, in the reader interpreting the pointer to find the corresponding application program in the card, and then in transferring the program very quickly to the reader for the purpose of executing it. The invention applies in particular to those applications programs which are run most frequently from a memory card.
摘要:
A memory or PC-cards serve as a large capacity mass memory for replicating floppy disks and other exchangeable magnetic supports. In order to improve these cards, there is added a microprocessor (MPC) with the direct wiring of the operational bus (BD2) of said microprocessor to the card memory (MEM). In this way, the card contains performable programs previously loaded by the computer (PC). Thus, the cards microprocessor functions not only with an internal set program memory, but also with performable programs loaded into the card by the computer. These programs can be modified as needed (provided that the user clearance procedures are respected).
摘要:
The invention relates to exchangeable memory or PC-cards with several integrated circuits for personal computers. These PC-cards are used as a large capacity mass memory for replacing floppy disks and other exchangeable magnetic supports. To protect the content of these PC-cards against unauthorized use, the invention proposes the incorporation into the card (CC) of a specific security integrated circuit chip (MPS), which performs a clearance function for access to the memory chips (MEM). A microcontroller (MPC) also placed in the card communicates with the computer and with the security circuit. It makes the security chip validate a confidential code introduced from the computer, while also supplying memory chip control signals as a function of the validation result.
摘要:
The method for the management of transactions in a system including card readers and the associated microcircuit cards consists in organizing the memory of the cards, designed for the recording of the transactions, in two zones, one zone that is accessible through the presenting of the bearer code at each transaction, for the transactions involving sums above a predetermined value, the other zone being accessible for the transactions involving sums that are below the predetermined value, without any systematic presenting of the bearer's code: a presenting of the bearer's code commands the writing of opening bits of recording spaces in this second zone until the number of open spaces is equal to N which is a predetermined value. The disclosed method can be applied, notably, to credit cards, telephone cards and multiple-use cards.
摘要:
To avoid the need for making microprocessor-fitted bank cards which, although they cost little, are in a relatively far too expensive range, money cards with only memory zones are made. They then have four memory zones, one zone pertaining to the identity of the bearer or to that of the card, one zone pertaining to the financial balance, a third zone pertaining to an interaction counter. This interaction counter counts the number of financial operations performed with the card. A fourth zone includes a certificate. This certificate is prepared, in each reader that performs a transaction with the card, with a DES algorithm. The value of this certificate is a function, according to an algorithm common to all the readers, of the identity, the content of the interaction counter and the balance. When a new operation is performed with the card, it is ascertained beforehand that the content of the certificate is the same as the one that can be recomputed by any terminal provided with the same algorithm.
摘要:
A method for securing access to detachable cards of the mass storage or I/O type using a password to encipher the address of the configuration register placed in the descriptor of the card, which descriptor is stored in a non-volatile memory of the card. The method prevents a computer from configuring the card unless a correct password is provided.
摘要:
The invention relates to exchangeable memory cards having several integrated circuits for personal computers. These memory cards serve as a large capacity mass memory for replacing floppy disks and other exchangeable magnetic supports. In particular, they have a plug-in connector (12) at the end of the card and can be inserted in the reader in accordance with PCMCIA standards of a microcomputer. According to an aspect of the invention, a flush contact chip card memory is formed by such a plug-in card (10) and for this purpose the latter has a supplementary connector with flush contacts on its principal face (14). The thus formed reader is transportable, with its application software stored in the card (10) and can be installed in any random microcomputer equipped with a PCMCIA reader. A credit card or security card (18) can then be inserted in the transportable reader. The memory card is typical a PCMCIA size card with a recess on one major plane surface and the security cards fits into this recess.
摘要:
The invention relates to exchangeable memory cards having several integrated circuits for personal computers. These memory cards serve as a large capacity mass memory for replacing floppy disks and other exchangeable magnetic supports. In particular, they have a plug-in connector (12) at the end of the card and can be inserted in the reader in accordance with PCMCIA standards of a micro-computer. According to an aspect of the invention, a flush contact chip card memory is formed by such a plug-in card (10) and for this purpose the latter has a supplementary connector with flush contacts on its principal face (14). The thus formed reader is transportable, with its application software stored in the card (10) and can be installed in any random microcomputer equipped with a PCMCIA reader. A credit card or security card (18) can then be inserted in the transportable reader. The memory card is typical a PCMCIA size card with a recess on one major plane surface and the security card fits into this recess.
摘要:
The invention relates to exchangeable memory or PC-cards having several integrated circuits for personal computers.These memory or PC-cards serve as a large capacity mass memory for replacing floppy disks and other exchangeable magnetic supports. In order to improve the possibilities of these cards, it is proposed that to them be added a microprocessor (MPC) and the direct wiring of the operational bus (BD2) of said microprocessor to the card memory (MEM). In this way, a card is obtained which contains in direct form performable programs previously loaded by the computer (PC) in which has been inserted the card. Thus, the microprocessor functions not only with an internal set program memory, but also with performable programs loaded into the card by the computer and which can therefore be modified at random (provided that the user clearance procedures are respected).
摘要:
The invention relates to exchangeable memory or PC-cards with several integrated circuits for personal computers. These PC-cards are used as a large capacity mass memory for replacing floppy disks and other exchangeable magnetic supports. To protect the content of these PC-cards against unauthorized use, the invention proposes the incorporation into the card (CC) of a specific security integrated circuit chip (MPS), which performs a clearance function for access to the memory chips (MEM). A microcontroller (MPC) also placed in the card comnunicates with the computer and with the security circuit. It makes the security chip validate a confidential code introduced from the computer, whilst also supplying memory chip control signals as a function of the validation result.