US 9,866,549 B2Granted

Antialiasing for picture passwords and other touch displays

AssigneeAntique Books, Inc.

InventorsRobert H. Thibadeau, Sr., Justin D. Donnell, Robert Thibadeau, Jr.

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Abstract

Antialiasing for picture passwords and other touch displays is disclosed. In some embodiments a client device for authenticating a user is operable to obtain a sequence of input actions for an image and obtain a partial hash from a Proof of Knowledge (PoK) server where the partial hash is part of a hash used for authentication of the user. The client device is also operable to calculate a hash for the sequence and determine if a part of the hash matches the partial hash. If the part of the hash matches the partial hash, the client device sends a communication to the PoK server to authenticate the user based on the hash for the sequence of the one or more input actions and obtain a response indicating whether the user is authenticated. In this way, sending some hashes to the proof of knowledge server may not be necessary, saving resources.

Claims13

Dependent claims

A client device for authenticating a user, comprising:

one or more processors;
and
memory containing instructions executable by the one or more processors whereby the client device is operable to:
obtain a first sequence of one or more input actions associated with an image displayed at the client device;
obtain a partial hash from a proof of knowledge server where a hash used for authentication of the user is n bits, the partial hash is k bits of the hash used for authentication of the user, and k is less than n;
calculate a hash for a second sequence of one or more input actions, wherein the second sequence of the one or more input actions is based on the first sequence of the one or more input actions;
determine if a part of the calculated hash matches the partial hash;
in response to determining that the part of the calculated hash matches the partial hash, send a communication to the proof of knowledge server to authenticate the user based on the calculated hash for the second sequence of the one or more input actions;
obtain a response from the proof of knowledge server based on the calculated hash for the second sequence of the one or more input actions;
and
based on the response from the proof of knowledge server based on the calculated hash for the second sequence of the one or more input actions, permit or deny access.

8 more elements

A system comprising:

a client device for authenticating a user and a proof of knowledge server, the client device comprising:
one or more processors;
and
memory containing instructions executable by the one or more processors whereby the client device is operable to:
obtain a first sequence of one or more input actions associated with an image displayed at the client device;
obtain a partial hash from the proof of knowledge server where a hash used for authentication of the user is n bits, the partial hash is k bits of the hash used for authentication of the user, and k is less than n;
calculate a hash for a second sequence of one or more input actions, wherein the second sequence of the one or more input actions is based on the first sequence of the one or more input actions;
determine if a part of the calculated hash matches the partial hash;
in response to determining that the part of the calculated hash matches the partial hash, send a communication to a proof of knowledge server to authenticate the user based on the calculated hash for the second sequence of the one or more input actions;
obtain a response from the proof of knowledge server based on the calculated hash for the second sequence of the one or more input actions;
and
based on the response from the proof of knowledge server based on the calculated hash for the second sequence of the one or more input actions, permit or deny access;
and
the proof of knowledge server comprising:
one or more processors;
and
memory containing instructions executable by the one or more processors whereby the proof of knowledge server is operable to:
send a communication to a client device containing a partial hash where the partial hash is a value derived from an original hash of an original sequence of one or more original input actions used to authenticate a user;
receive a communication from a client device containing a calculated hash for the second sequence of one or more input actions;
and
send a response based on the calculated hash for the second sequence of the one or more input actions.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/295,718Filed 17 Oct 2016 · continuation
Priority: 2 Jun 2014
Published: US 2017/0034150 A12 Feb 2017
Granted: 9 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

H04L 63/083
For authentication of entities: using passwords
G06F 3/04812
Based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like…:…
G06F 3/04842
For the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a…:…
G06F 21/36
User authentication: by graphic or iconic representation

Family

Application62/006,466Us provisional application · filed 2 Jun 2014
Application62/025,141Us provisional application · filed 16 Jul 2014
Application14/728,904Parent of this continuation · filed 2 Jun 2015
US 2017/0034150 A1Pre-grant publication · published 2 Feb 2017
US 9,490,981 B2Parent of this continuation
US 2015/0349957 A1Published application
US 9,866,549 B2This patent

From the US filing history. Foreign family members aren’t listed.