The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 1988
Filed:
Nov. 30, 1984
Kenneth P Weiss, Boston, MA (US);
Security Dynamics Technologies, Inc., Cambridge, MA (US);
Abstract
An apparatus for the electronic generation and comparision of non-predictable codes. The appartus of the invention comprises a first mechanism for calculating a first non-predictable code according to a predetermined algorithm, the first mechanism for calculating including a first mechanism for inputting a unique static variable into the predetermined algorithm; a first mechanism for automatically defining a first dynamic variable according to the interval of time in which the first mechanism for inputting is activated, the first mechanism for automatically defining including a mechanism for automatically making the first dynamic variable available to the predetermined algorithm of the first mechanism for calculating; a second mechanism for calculating a second non-predictable code according to the predetermined algorithm, the second mechanism for calculating including a second mechanism for inputting the unique static variable into the predetermined algorithm; a second mechanism for automatically defining a second dynamic variable according to the interval of time in which the second mechanism for inputting is activated, the second mechanism for automatically defining including a mechanism for automatically making the second dynamic variable available to the predetermined algorithm of the second mechanism for calculating; and a mechanism for comparing the first non-predicatable code with the second non-predictable code.