Authorized users respond to changing challenges with changing passwords. Scheme for controlling access to computers defeats eavesdroppers and "hackers". Based on password system of challenge and password or sign, challenge, and countersign correlated with random alphanumeric codes in matrices of two or more dimensions. Codes stored on floppy disk or plug-in card and changed frequently. For even higher security, matrices of four or more dimensions used, just as cubes compounded into hypercubes in concurrent processing.


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    Title :

    Computer-Access-Code Matrices


    Contributors:

    Published in:

    Publication date :

    1990-04-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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