| 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... |
| 5461217 |
Secure money transfer techniques using smart cards |
| Oct-24-1995 |
Systems and methods for providing secure electronic financial transactions are disclosed. Money is electronically stored on a plurality of smart cards. At least one smart card is equipped with an electronic... |
| 5453601 |
Electronic-monetary system |
| Sep-26-1995 |
An improved monetary system using electronic media to exchange economic value securely and reliably. The invention provides a complete monetary system having electronic money that is interchangeable with... |
| 5381478 |
Cipher communication system for transaction data |
| Jan-10-1995 |
A cipher communication system for communicating transaction data between a host computer and a portable electronic device, wherein the host computer includes a first memory for storing a master key data,... |
| 5354975 |
Contactless data processing apparatus |
| Oct-11-1994 |
When a control section of a data carrier discriminates a command from a reader/writer, either one of two kinds of pseudo random signals is returned in accordance with a bit 0 or 1 of response data. When... |
| 5317636 |
Method and apparatus for securing credit card transactions |
| May-31-1994 |
This disclosure relates to a method and apparatus for improving the security of credit card transactions. It involves a so-called "smart" credit card, which includes a processor, a memory, and a display... |
| 5310999 |
Secure toll collection system for moving vehicles |
| May-10-1994 |
A secure toll payment system is realized by transmitting a changeable encryption code from roadside equipment at a toll plaza to a moving vehicle. Thereafter, the moving vehicle uses it to encrypt payment... |
| 5293577 |
Method and apparatus for preventing inadmissible deviations from the runtime protocol of an application in a data exchange system |
| Mar-8-1994 |
Method and apparatus for preventing inadmissible deviations from the runtime protocol of an application in a data exchange system. The data exchange system has, for example, a terminal T and a chip card... |
| 5278905 |
Method and apparatus for processor base encryption |
| Jan-11-1994 |
The penalties and drawbacks associated with encrypting information in a portable device having a microprocessor are avoided by, in advance of the time for encryption to begin, having the microprocessor... |
| 5247578 |
Process for exchange of rights between microprocessor cards |
| Sep-21-1993 |
A process for exchange of rights between microprocessor cards, wherein multiple keys (K1, K2, . . . ) and varied keys (Ka5, Kb3) are used. A card to be debited calculates a voucher with varied key (Ka5)... |
| 5224164 |
Method and apparatus for transliterating messages |
| Jun-29-1993 |
It is the object of the invention to realize a low-cost, low-effort cryptoanalytically secure encrypting/decrypting method for high data rates and large code key spaces. The solution provides for a message... |
| 5216716 |
Transmitting device of signal sequences |
| Jun-1-1993 |
Transmitting device of sequences of acoustic signals. The device comprises a transducer, a generator, a micrologic unit, a memory, a battery and a control means. The device transmits sequences that differ... |
| 5193114 |
Consumer oriented smart card system and authentication techniques |
| Mar-9-1993 |
A consumer oriented secure smart card with various accounts which are accessible only through proper use of security measures. Security measures consist of encryption with described automatic key generation... |
| 5177790 |
Method for generating a random number in a data processing system/and system for implementing the method |
| Jan-5-1993 |
In a data processing system using portable objects (1) such as cards incorporating memory chips (11, 12, 13, 14, 15) and a processing circuit (10), where a first memory zone (11) is electrically erasable... |
| 5157717 |
Portable automated teller machine |
| Oct-20-1992 |
The portable automated teller machine disclosed by the present invention is a low-cost, pocket-size data terminal which can securely exchange information with a host bank computer. It is battery powered,... |
| 5093862 |
Data carrier-controlled terminal in a data exchange system |
| Mar-3-1992 |
A terminal (10) in a data exchange system with exchangeable portable user data carriers (4) has for their connection at least one connecting unit (3) and has further at least one data input unit (5). Exchangeable... |
| 5050207 |
Portable automated teller machine |
| Sep-17-1991 |
The portable automated teller machine disclosed by the present invention is a low-cost, pocket-size data terminal which can securely exchange information with a host bank computer. It is battery powered,... |
| 5048085 |
Transaction system security method and apparatus |
| Sep-10-1991 |
An improved security system is disclosed which uses an IC card to enchance the security functions involving component authentication, user verification, user authorization and access control, protection... |
| 5017766 |
Portable electronic apparatus capable of confirming validity of transaction data |
| May-21-1991 |
In an IC card having an update function of transaction data, account type, supplementary amount, and valid date are input to the IC card. The IC card adds a renewal number data held therein to the input... |
| 4985921 |
Portable data carrying device |
| Jan-15-1991 |
With portable data carrying devices, which are intended for the required connection (for example by means of contacts 9) to an external read/write unit in a data exchange system and which contain besides... |
| 4985920 |
Integrated circuit card |
| Jan-15-1991 |
An integrated circuit (IC) card is provided with an external memory having a much larger memory capacity than that of a usual internal memory packaged inside the IC card together with a processor. The... |
| 4965827 |
Authenticator |
| Oct-23-1990 |
An authenticator for digital data is derived by generating a numerical array, using a secret key to controllably shift the relative positions of the elements of the array, and applying the scrambled array... |
| 4962531 |
Transaction system comprising one or more host exchanges and a number of distributed terminal stations |
| Oct-9-1990 |
A transaction system comprises terminal stations which can communicate with a host exchange. In order to improve the communication, concentrators are arranged between the host exchange and the terminal... |
| 4961142 |
Multi-issuer transaction device with individual identification verification plug-in application modules for each issuer |
| Oct-2-1990 |
A transaction terminal for use with diverse credit or other transaction cards is provided with an interface unit for receiving a plurality of modules, wherein each module contains programming information... |
| 4960982 |
IC card with secure mass storage memory |
| Oct-2-1990 |
An information recording system utilizing an IC card having an onboard microprocessor, an onboard semiconductor memory which can be accessed from outside the card only by way of the microprocessor, and... |
| 4907272 |
Method for authenticating an external authorizing datum by a portable object, such as a memory card |
| Mar-6-1990 |
The invention relates to a method for authenticating an external authorizing datum by a portable object, such as a memory card. The authorizing datum (C1) entered into an apparatus (2) is enciphered with... |
| 4827512 |
Programmable portable electronic device |
| May-2-1989 |
According to a portable medium (IC card) of this invention, a memory area is divided into a system program area and a user program area. A text transmitted between the IC card and a host system connected... |
| 4804825 |
I C card system |
| Feb-14-1989 |
An IC card system in which either an on-line transaction or an off-line transaction can be made by using an IC card. The IC card contains a memory for storing the data about every transaction made by using... |
| 4803351 |
IC card system with control of data-writing process |
| Feb-7-1989 |
An IC card system comprises an IC card terminal and an IC card which is inserted into the terminal, the terminal including a power-supply circuit for supplying data-writing power to a memory provided in... |
| 4795893 |
Security device prohibiting the function of an electronic data processing unit after a first cutoff of its electrical power |
| Jan-3-1989 |
The invention relates to a security device (1) prohibiting the execution of at least one function of an electronic data processing unit (2) after a first cutoff of its electric power even in the case of... |
| 4771460 |
Data processing terminal device which stores a modified decrypted data in a programmable read only memory in order to detect alteration thereof |
| Sep-13-1988 |
A data processing terminal device is on-line connected to a host computer and records on journal paper journal data obtained as a result of communication with the host computer. Data is encrypted, and... |
| 4757543 |
Encrypting and decrypting device which stores an algorithm in a memory |
| Jul-12-1988 |
A data processing terminal device is on-line connected to a host computer and records on journal paper journal data obtained as a result of communication with the host computer. Data is encrypted, and... |
| 4748557 |
Data processing terminal device for storing encrypted journal data and decrypting the data |
| May-31-1988 |
A data processing terminal device is on-line connected to a host computer and records on journal paper journal data obtained as a result of communication with the host computer. Data is encrypted, and... |
| 4742351 |
IC card system |
| May-3-1988 |
An IC card is inserted in an IC card terminal. Under this condition, the PAN data read out from the IC card is compared with the decrypted PAN data for identification purposes. Then, the IC card is removed... |
| 4672182 |
Memory card |
| Jun-9-1987 |
A memory card has a card medium and a laser memory for storing data. A data processing section for storing encryption and/or decryption key data, an encryption and/or decryption program and a password... |
| 4575621 |
Portable electronic transaction device and system therefor |
| Mar-11-1986 |
A portable electronic transaction device and a terminal therefor. The device comprises a central data processor, a fixed memory, an adaptable memory, optical means for transmitting and receiving information... |
| 4499556 |
Security arrangements in data transfer equipment |
| Feb-12-1985 |
In equipment which comprises a storage station or portable data carrier holding data and a control station for interaction with the storage station to alter the stored data, for example telephone equipment... |
| 4211919 |
Portable data carrier including a microprocessor |
| Jul-8-1980 |
A portable data or information carrier in the form of a card or the like. In order to maximize the confidentiality of information stored in the carrier, and more specifically to limit the amount of information... |
| 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... |
