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:
May. 11, 1993
Filed:
Jan. 10, 1992
Applicant:
Inventors:
Steven B Lipner, Wellesley, MA (US);
Morrie Gasser, Saugus, MA (US);
Butler W Lampson, Cambridge, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K / ;
U.S. Cl.
CPC ...
380 23 ; 380-4 ; 380 25 ; 395725 ;
Abstract
A method and apparatus for authenticating a human user on a personal computer without requiring the user to expose his password or authentication secret to the personal computer of a server. Also a method for protecting a floppy disk with login software from unauthorized use.