Method, Apparatus and Server for User Verification

• US 20120151603A1
• Filed: 07/20/2010
• Published: 06/14/2012
• Est. Priority Date: 09/01/2009
• Status: Active Grant

• Current Assignee: Alibaba Group Holding Ltd.
• Original Assignee: Alibaba Group Holding Ltd.
• Inventors: Wang, Liangjing
• Granted Patent: US 8,667,561 B2
• Time in Patent Office: Days
• US Class Current: 726/28
• CPC Class Codes: G06F 16/50 of still image data
• CPC Class Codes: G06F 21/36 by graphic or iconic representation
• CPC Class Codes: G06V 10/242 by image rotation, e.g. by 90 degrees

Abstract

The present disclosure discloses a method, apparatus, and server for user verification to store a plurality of pictures in a database and define a plurality of rotational directions. The method includes: when receiving from a client a request for a checkcode, rotating a picture retrieved from a database according to a defined rotational direction; after storing a correlation between an identification of the client and the rotational direction of the retrieved picture, outputting the rotated picture to the client; receiving a rotational direction of the picture from the client; finding the stored correlation between the identification of the client and the stored rotational direction of the retrieved picture according to the identification of the client; determining whether or not the rotational direction of the picture returned from the client matches the stored rotational direction. If they match, user verification is passed; otherwise, the user verification is failed. The large number of pictures in the database makes it difficult for enumeration. In addition, by using the rotational direction as identification information to verify user, the safety and accuracy of user verification can be enhanced.

Claims

1. A method for user verification, the method comprising:

storing a plurality of pictures in a database;

defining a plurality of rotational directions;

rotating a picture retrieved from the database according to a defined rotational direction in response to receiving from a client a request for a checkcode;

storing a correlation between an identification of the client and the rotational direction of the retrieved picture;

providing the rotated picture to the client;

receiving a rotational direction of the picture from the client;

identifying the stored correlation between the identification of the client and the rotational direction of the retrieved picture according to the identification of the client; and

determining whether the rotational direction of the picture received from the client matches the stored rotational direction to indicate passing of user verification when there is a match or indicate failing of the user verification when there is no match.

2. The method as recited in claim 1, wherein defining a plurality of rotational directions comprises:

defining a plurality of rotational directions of the picture; and

associating each direction with a parameter value according to an order of rotational directions.

3. The method as recited in claim 1, wherein rotating a picture retrieved from the database according to a defined rotational direction comprises:

retrieving a plurality of pictures from the database; and

randomly rotating the plurality of picture retrieved from the database according to one or more defined rotational directions.

4. The method as recited in claim 2, wherein rotating a picture retrieved from the database according to a defined rotational direction comprises:

randomly generating a group of rotational direction parameter values according to the defined rotational directions;

retrieving from the database a number of pictures the number of which equal to the number of parameter values in the group of rotational direction parameter values; and

rotating the pictures according to the group of rotational direction parameter values.

5. The system as recited in claim 1, wherein providing the rotated picture to the client comprises:

combining the rotated pictures into a resultant picture;

providing the resultant picture to the client or providing the rotated pictures to the client in a flash form.

6. An apparatus for user verification, comprising:

a pre-store unit that stores a plurality of pictures in a database;

a definition unit that defines a plurality of rotational directions;

a rotation unit that rotates a picture retrieved from the database according to a defined rotational direction in response to receiving from a client a request for a checkcode;

a storage unit that stores a correlation between an identification of the client and the rotational direction of the retrieved picture;

an output unit that outputs the rotated picture to the client;

a receiving unit that receives a rotational direction of the picture from the client;

a finding unit that identifies the stored correlation between the identification of the client and the stored rotational direction of the retrieved picture according to the identification of the client; and

a verification unit that determines whether or not the rotational direction of the picture received from the client matches the stored rotational direction to indicate passing of user verification when there is a match or indicate failing of the user verification when there is no match.

7. The apparatus as recited in claim 6, wherein the definition unit comprises:

a direction setup unit that establishes a plurality of rotational directions; and

a direction match unit that associates each rotational direction with a parameter value according to an order that the rotational directions are established.

8. The apparatus as recited in claim 6, wherein the rotation unit comprises:

a picture extraction unit that retrieves a number of pictures from the database; and

a random rotation unit that randomly rotates the retrieved pictures according to the defined rotational directions.

9. The apparatus as recited in claim 7, wherein the rotation unit comprises:

a random generation unit that randomly generates a group of rotational direction parameter values according to the defined rotational directions;

a rotation extraction unit that retrieves a number of pictures, the number of the retrieved pictures equal to the number of parameter values in the group of rotational direction parameter values; and

a picture rotation unit that rotates the pictures according to the group of rotational direction parameter values.

10. A server for user verification, comprising:

a database that stores a plurality of pictures;

a checkcode generation module that rotates a picture retrieved from the database according to a defined rotational direction in response to receiving from a client a request for a checkcode, stores a correlation between an identification of the client and the rotational direction of the retrieved picture, and provides the rotated picture to the client; and

a user verification module that identifies the correlation between the identification of the client and the rotational direction of the retrieved picture according to the identification of the client after receiving a rotational direction of the picture from the client, and determines whether the rotational direction of the picture received from the client matches the stored rotational direction to indicate passing of user verification when there is a match or indicate failing of the user verification when there is no match.