| 5604802 |
Transaction processing system |
| Feb-18-1997 |
A transaction processing system comprises at least one transaction terminal (10, 11, 12) having means to receive characteristic data from a user, which characteristic data is required to generate a characteristic... |
| 5590197 |
Electronic payment system and method |
| Dec-31-1996 |
A cyber wallet in the form of stored and protected account information, which may be "carried" on a tamper resistant portable electronic storage medium such as a smartcard, or stored on the customer's... |
| 5473690 |
Secured method for loading a plurality of applications into a microprocessor memory card |
| Dec-5-1995 |
A method for loading and managing a plurality of applications in a memory of a chip card, the method including: recording a chart of applications in the memory of the chip card which associates a password... |
| 5446796 |
Method and apparatus for settlement of accounts by IC cards |
| Aug-29-1995 |
An IC card has a card information memory area wherein there are written a master public key nA, card secret keys pU and qU, a card public key nU, a card identification number IDU, and a first master digital... |
| 5428684 |
Electronic cashless transaction system |
| Jun-27-1995 |
A key control method is for use in an electronic cashless transaction system including at least a bank center, a store transaction terminal and an IC card being used as an electronic cashless transaction... |
| 5384846 |
System and apparatus for controlled production of a secure identification card |
| Jan-24-1995 |
An identification card and system and apparatus for producing and authenticating such an identification card in a controlled manner. An object or other entity for which the identification card will evidence... |
| 5343530 |
Method for the authentication of data |
| Aug-30-1994 |
Disclosed is a method of authentication of data elements of the type that may be needed, for example, to authenticate a chip card before permitting a transaction instrument to deliver a service to the... |
| 5305383 |
Method of electronic payment by chip card by means of numbered tokens allowing the detection of fraud |
| Apr-19-1994 |
Method of electronic payment by chip card. According to the invention, each token carries a number making it possible to check its authenticity. The invention is used for electronic payment. |
| 5288979 |
Method for activating a data carrier having an inactive chip bonded to the data carrier for activating the data carrier |
| Feb-22-1994 |
Electronic memory chips have been introduced into plastic cards, for example, credit, checking and/or personal data cards. A method for activating the memory chips makes it possible to issue the plastic... |
| 5231666 |
Cryptographic method for updating financial records |
| Jul-27-1993 |
A data processing system, method and computer program provide for the secure updating an electronic purse which includes a list of purse records. The method includes the step of defining an authentication... |
| 5191608 |
Method for the management of an application program loaded in a microcircuit medium |
| Mar-2-1993 |
To provide protection for the use of chip cards, the microprocessor of such a card is made, during the use of the card, to compute a signature according to complex encrypting algorithm taking account,... |
| 5185798 |
IC card system having a function of authenticating destroyed data |
| Feb-9-1993 |
An IC card includes, in addition to an ordinary data recording processing circuit, an IC chip area including an encrypting circuit, and a magnetic or optical data recording unit mounted thereon. Those... |
| 5128997 |
Wired microcircuit card and a method for transactions between a corresponding wired microcircuit card and a terminal |
| Jul-7-1992 |
The invention concerns a microcircuit card of the kind comprising: a communication interface; an internal memoryp a wired processor unit allowing this internal memory to be addressed from the outside.... |
| 5020105 |
Field initialized authentication system for protective security of electronic information networks |
| May-28-1991 |
An authentication system for electronic information networks having small hand-held portable authenticating devices which are remotely initialized and can use 4 bit microprocessors in a challenge-response... |
| 5016274 |
On-line/off-line digital signing |
| May-14-1991 |
A method for "on-line/off-line" digital signing is described and begins by pre-computing a data string x from a pair of matching public and secret keys of a digital signature scheme such that, for any... |
| 5014312 |
Security system for the protection of programming zones of a chip card |
| May-7-1991 |
The use of chip cards, with the level of security of the type associated with chip cards of the type used by banks, is extended to move widespread use by organizing a secure dispatch of blank chip cards... |
| 4944007 |
Public key diversification method |
| Jul-24-1990 |
A method is disclosed whereby individual members of a group of members or entities may be provided, under the control of a trusted member, referred to as the parent, with respective individual secret keys... |
| 4910774 |
Method and system for suthenticating electronic memory cards |
| Mar-20-1990 |
The method in suitable for authenticating electronic memory cards intended for authorizing the supply of goods or services after being processed by a card reader machine. The card memory includes at least... |
| 4910773 |
Method of dispatching secret keys to security modules and user cards in a data processing network |
| Mar-20-1990 |
The present invention relates to a method for dispatching at least one predetermined secret key, in order to make the implementation of a provision of service secure, characterized in that it comprises... |
| 4907271 |
Secure transmission of information between electronic stations |
| Mar-6-1990 |
An information transport system for conveying information between a franking meter machine and a Post Office equipment includes a unit having a non-volatile read/write memory which may consist of an EEPROM... |
| 4906828 |
Electronic money purse and fund transfer system |
| Mar-6-1990 |
The essence of the invention is a socalled "data bit variable spacer generator", block 79, which contributes to the generation of a control output "c" from a combinatory logic circuit group 78. The logic... |
| 4885788 |
IC card |
| Dec-5-1989 |
An IC card having an authentication code which is compared with an authentication code obtained by processing data recorded on the IC card, and permitting the IC card to be used only when agreement is... |
| 4811393 |
Method and system for diversification of a basic key and for authentication of a thus-diversified key |
| Mar-7-1989 |
The subject of the invention is a method for diversification of a basic key and for authentication of a thus-diversified key as having been fashioned on the basis of a predetermined basic key, and a system... |
| 4731575 |
Prepayment metering system using encoded purchase cards |
| Mar-15-1988 |
A prepayment utility metering method and apparatus which uses encoded mag-stripe cards to transfer purchase information from the utility billing office to the customer's premises. The mag-stripe cards... |
| 4650975 |
IC card and an identification system thereof |
| Mar-17-1987 |
A plurality of secret data for identifying IC cards is stored in a memory which is provided in an IC circuit incorporated in the IC card. When an IC card is supplied to an issuer from a manufacturer, a... |
| 4591704 |
Data scrambling system and method |
| May-27-1986 |
Credit cards to be used with automated systems such as vending machines or the like have various identification and other data encoded on them for use with a particular system for which they are intended.... |
| 4453074 |
Protection system for intelligent cards |
| Jun-5-1984 |
There is disclosed a protection system for intelligent cards. Each card has stored in it a code which is the encryption of a concatenation of a user secret password and a common reference text. The encryption... |
| 4328414 |
Multilevel security apparatus and method |
| May-4-1982 |
A card-encoding system and method preserves the security of the encoding process against duplication and counterfeiting of cards by securing the interactions under the control of the individual and then... |
| 4256955 |
System for keeping account of predetermined homogeneous units |
| Mar-17-1981 |
A credit card system includes a credit card containing a memory for storing coded information indicative of: an identification of the use for which the article is intended, an identification of units used... |
| 4092524 |
Systems for storing and transferring data |
| May-30-1978 |
A portable independent electronic object designed for storing and transferring data confidentially intended for being coupled to a data transfer device; the said portable object comprising, at least one... |
