| 4423287 |
End-to-end encryption system and method of operation |
| Dec-27-1983 |
An efficient end-to-end encryption system including key management procedures for providing secure, financial data communication between a system user at one of a plurality of transaction terminals of... |
| 4408203 |
Security system for electronic funds transfer system |
| Oct-4-1983 |
A security system, particularly useful in an electronic funds transfer system, makes use of secret identification codes known only to system users. The codes are encrypted upon insertion into the system... |
| 4386234 |
Cryptographic communication and file security using terminals |
| May-31-1983 |
A data security device which includes storage means for storing a master cipher key, cryptographic apparatus for performing cryptographic operations and control means for controlling the writing of a master... |
| 4317957 |
System for authenticating users and devices in on-line transaction networks |
| Mar-2-1982 |
A method for efficiently protecting transactions and providing authentication of users and devices in on-line systems that transfer funds electronically, dispense cash, or provide a good or permit a service... |
| 4259720 |
Security system for electronic funds transfer system |
| Mar-31-1981 |
A security system, particularly useful in an electronic funds transfer system, makes use of secret identification codes known only to system users. The codes are encrypted upon insertion into the system... |
| 4227253 |
Cryptographic communication security for multiple domain networks |
| Oct-7-1980 |
A communication security system for data transmissions between different domains of a multiple domain communication network where each domain includes a host system and its associated resources of programs... |
| 4223403 |
Cryptographic architecture for use with a high security personal identification system |
| Sep-16-1980 |
A Cryptographic Architecture for improving the security of Cash-Issuing or similar Terminal Systems when it is necessary to operate Off-Host. Each Terminal is connected to a central Controller which is... |
| 4218738 |
Method for authenticating the identity of a user of an information system |
| Aug-19-1980 |
Secure hardware is provided for cryptographically generating a verification pattern which is a function of a potential computer user's identity number, the potential computer user's separately entered... |
| 4193131 |
Cryptographic verification of operational keys used in communication networks |
| Mar-11-1980 |
In a data communication network providing communication security for communication sessions between a first station and a second station where each station has cryptographic apparatus provided with an... |
| 4186871 |
Transaction execution system with secure encryption key storage and communications |
| Feb-5-1980 |
A transaction execution 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 handlng... |
