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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0483084 (1974-06-25) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 401 인용 특허 : 0 |
A transaction execution system includes a host data processing system having a multiple account data base and a plurality of transaction terminals in communication with the host. The terminals each include a keyboard, a display, document handling subsystems, a hardware control subsystem, a communica
A transaction execution system includes a host data processing system having a multiple account data base and a plurality of transaction terminals in communication with the host. The terminals each include a keyboard, a display, document handling subsystems, a hardware control subsystem, a communication subsystem and a programmable control subsystem supervising the other subsystems. A user initiates a transaction request by inserting a card into one of the terminals. After reading acceptable account identification information from the card the terminal requests entry of a preassigned personal ID number through the keyboard. The ID number is encrypted by the terminal at least once and communicated to the host along with information read from the card and entered via the keyboard. The host accesses from its stored data base an encrypted ID number corresponding to the received card information and makes a verification comparison of the stored encrypted ID number with the encrypted ID number received from the terminal. By requiring the entry of a nonencrypted ID number at a terminal while storing only encrypted ID numbers at the host, the correspondence between credit card account information and ID numbers need be known only to a few key personnel having access to both the encryption algorithm and a particular key therefor.
A transaction terminal which is connectable to a host and which is dependent upon a host for approval and recordation of transactions indicated by a user, the transaction terminal comprising: a data input device for entering a user determined block of identification information; an encoder connected
A transaction terminal which is connectable to a host and which is dependent upon a host for approval and recordation of transactions indicated by a user, the transaction terminal comprising: a data input device for entering a user determined block of identification information; an encoder connected to encode at least a portion of the block of identification information to produce a first encrypted block of identification information indicative of at least a portion of the identification block of information; an encoder connected to encode at least a portion of the first encrypted block of identification information to produce a second encrypted block of identification information indicative of at least a portion of the identification block of information; and a transmitting system connected to transmit at least a portion of the second encrypted block of identification information to a host.
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