Matches 251 - 300 out of 312 < 1 2 3 4 5 6 7 >
Match Document Document Title
5926546 Communication device and system for mobile encrypted communication  
An automatic collection system for automatically collecting a toll charge from an IC card is provided with transceivers in gantries installed along a vehicle road. This collection system uses the...
5864829 Network charge method and system  
A user who offered the purchase of a commodity or performed down-loading through a network is charged by a safe method. This charge is executed by sending a plurality of passwords, which can be...
5862224 Cryptographic process for protection against fraud  
A cryptographic process is for protection against fraud. An allocation of a secret key K is made to a card and to an application and an input value R is defined. The card and application calculate...
5850442 Secure world wide electronic commerce over an open network  
A network of users and servers of a type found in the Internet system is extended to permit secure electronic commercial transactions to be accomplished. The network is extended to include a public...
5825875 Process for loading a protected storage zone of an information processing device, and associated device  
The invention relates to a process for loading a protected storage zone of an information processing device, with confidential data and/or programs, and to the associated information processing...
5778069 Non-biased pseudo random number generator  
A computer-implemented pseudo random number generator includes an input device to assemble multiple classes of bits from multiple sources into an input bit string. The multiple classes of bits...
5778067 Value transfer system  
A value transfer system which allows value to be transferred between electronic purses comprises computer which controls the loading of purses with value and the redemption of value from purses, a...
5761310 Communication system for messages enciphered according to an RSA-type procedure  
The procedure involves key numbers "d" and "e" and a modulus N, so hat "N" is the product of two factors "p" and "q" which are prime numbers N=p.q, and e.d=1 MOD φ(N), where φ(N) is the Euler...
5754655 System for remote purchase payment and remote bill payment transactions  
A terminal is provided for allowing a user to conduct remote purchase payment and remote bill payment transactions with a remote host computer. In one embodiment, the terminal includes a QWERTY...
5748737 Multimedia electronic wallet with generic card  
An electronic wallet is disclosed which provides multiple data media interfaces. Standard interfaces will include a smart card reader/writer, a magnetic reader/writer, a radio frequency transceiver...
5734722 Electronic travel pass  
A data transfer system transfers data between a smartcard and a reader by transmitting a series of binary pulses, where the absence or presence of single predetermined pulses within the series...
5729609 Method for producing a common key in two devices, in order to implement a common cryptographic procedure, and associated apparatus  
The invention relates to a method and an apparatus for producing a key that is common to two devices that belong to different sets and are intended to implement a common cryptographic procedure....
5703949 Method for establishing secure communications among processing devices  
A system for open electronic commerce having a customer trusted agent securely communicating with a first money module, and a merchant trusted agent securely communicating with a second money...
5694471 Counterfeit-proof identification card  
A system and method for preventing counterfeiting of an identification or transaction card, and for verifying that the user of the card is an authorized user, involves the use of a unique,...
5680459 Passive transponder  
The present invention relates to an electronic identification system comprising one or more transponders which store identification and other information in memory, and readers, which capture...
5677955 Electronic funds transfer instruments  
An electronic instrument is created in a computer-based method for effecting a transfer of funds from an account of a payer in a funds-holding institution to a payee. The electronic instrument...
5655023 Advanced postage payment system employing pre-computed digital tokens and with enhanced security  
A method and system for postage payment include the generation of a plurality of dispensable discrete items of encrypted data. Each of the items of encrypted data, which may be digital tokens, have...
5613001 Digital signature verification technology for smart credit card and internet applications  
The presently used Asymmetric Digital Signature verification technologies, such as the system of RSA Data Security Corp., require complex mathematical operations for encryption and decryption. As a...
5602919 Speedup for monetary transactions using a transponder in conjunction with a smartcard  
This invention allows a user to have a smartcard (66) and a smartcard-based transponder (14). This smartcard-based transponder (14) can accept money from the smartcard (14). The amount transferred...
5590197 Electronic payment system and method  
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...
5550919 Method and device for limiting the number of authentication operations of a chip card chip  
To resolve the problems related to the divulgation of the algorithms for the transcoding of the secret codes in chip cards, notably prepayment type chip cards, it is planned to limit the number of...
5544246 Smartcard adapted for a plurality of service providers and for remote installation of same  
A smartcard that allows different Service Providers to coexist on the smartcard with none of the Service Providers, nor the owner of the smartcard, having access to the files created for, or by,...
5513261 Key management scheme for use with electronic cards  
In an electronic card of the type for insertion into a host electronic device for providing to the host device security parameters pertaining to the rightful holder of the card, the security...
5497418 Data processing system having a set of memory cards  
A data processing system comprises a set of memory cards (10) and at least one central administration and processing unit (22). According to the invention, the memory cards and the processing unit...
5485520 Automatic real-time highway toll collection from moving vehicles  
One or more roadside collection stations (RCS) communicate over a short-range, high speed bidirectional microwave communication link with one or more in-vehicle units (IVU) associated with one or...
5473690 Secured method for loading a plurality of applications into a microprocessor memory card  
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...
5461217 Secure money transfer techniques using smart cards  
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...
5381478 Cipher communication system for transaction data  
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...
5354975 Contactless data processing apparatus  
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....
5317636 Method and apparatus for securing credit card transactions  
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...
5310999 Secure toll collection system for moving vehicles  
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...
5293577 Method and apparatus for preventing inadmissible deviations from the runtime protocol of an application in a data exchange system  
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...
5278905 Method and apparatus for processor base encryption  
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...
5247578 Process for exchange of rights between microprocessor cards  
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...
5224164 Method and apparatus for transliterating messages  
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...
5216716 Transmitting device of signal sequences  
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...
5193114 Consumer oriented smart card system and authentication techniques  
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...
5177790 Method for generating a random number in a data processing system/and system for implementing the method  
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...
5157717 Portable automated teller machine  
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...
5093862 Data carrier-controlled terminal in a data exchange system  
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...
5017766 Portable electronic apparatus capable of confirming validity of transaction data  
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...
4985921 Portable data carrying device  
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...
4985920 Integrated circuit card  
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....
4965827 Authenticator  
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...
4962531 Transaction system comprising one or more host exchanges and a number of distributed terminal stations  
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...
4960982 IC card with secure mass storage memory  
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,...
4961142 Multi-issuer transaction device with individual identification verification plug-in application modules for each issuer  
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...
4907272 Method for authenticating an external authorizing datum by a portable object, such as a memory card  
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...
4827512 Programmable portable electronic device  
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...
4804825 I C card system  
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...
Matches 251 - 300 out of 312 < 1 2 3 4 5 6 7 >