Robust visual passwords
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 15, 2007
Grant Date -
Mar 7, 2002
app pub date -
Mar 23, 2001
filing date -
Feb 11, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Enrollment and authentication of a user based on a sequence of discrete graphical choices is described. A graphical interface presents various images and memory cues that a user may associate with their original graphical choices. Enrollment may require the input to have a security parameter value that meets or exceeds a threshold. An acceptable sequence of graphical choices is converted to a sequence of values and mapped to a sequence of codewords. Both a hash of the sequence of codewords and a sequence of offsets are stored for use in authenticating the user. An offset is the difference between a value and its corresponding codeword. Authentication requires the user to enter another sequence of discrete graphical choices that is approximately the same as original. The offsets are summed with the corresponding values before mapping to codewords. Authentication requires the sequence of codewords, or a hash thereof, to match.
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Cited Art Landscape
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