Computer accessing system
January 12, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3798359 3800284 3860911 Transaction execution system with secure data storage and communications Block cipher system for data security Operating system authenticator Spread spectrum demodulator Message verification and transmission error detection by block chaining Multi-mode digital enciphering system Identity verification method and apparatus InventorAssigneeApplicationNo. 06/892252 filed on 03/31/1978US Classes:713/155, Central trusted authority provides computer authentication235/382, Permitting access340/5.26, Code rotating or scrambling340/5.54, Password340/5.74, Access to electrical information379/903, PASSWORD379/93.02, Access restricting380/262Transmitting a seed, sequence, or initial valueExaminersPrimary: Thomas, James D.Attorney, Agent or FirmInternational ClassesG06F 21/00 (20060101)H04L 9/32 (20060101) G07F 7/10 (20060101) AbstractA communications link between a computer and a remote user is effected by a portable access unit which generates a nonrecurring access code which is a function of a password and a pseudorandomly generated number. The access code is transmitted and compared with an access code generated by a computer access controller. In addition to the access code, the pseudorandomly generated number provides an encryption key which is not transmitted but corresponds to a mating encryption key generated at the controller. The mating encryption keys are utilized to set up data transmission enciphering/deciphering networks successive links are established by incremented pseudorandomly generated access codes.Other References
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