METHOD OF PERFORMING ONE-TIME PASSWORD (OTP) AUTHENTICATION USING COLOR CODE AND OTP AUTHENTICATION SERVER USING COLOR CODE

• US 20170078278A1
• Filed: 08/30/2016
• Published: 03/16/2017
• Est. Priority Date: 09/16/2015
• Status: Active Grant

• Current Assignee: SungKyunKwan University's Research & Business Foundation (SungKyunKwan University)
• Original Assignee: SungKyunKwan University's Research & Business Foundation (SungKyunKwan University)
• Inventors: HONG, Kwang-Seok, PARK, Sang Min
• Granted Patent: US 10,313,332 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 63/0838 using one-time-passwords
• CPC Class Codes: H04L 63/0853 using an additional device, e.g. smartcard, SIM or a different communication terminal cryptographic mechanisms or cryptographic arrangements for entity authentication involving additional secure or trusted devices H04L9/3234
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/068 using credential vaults, e.g. password manager applications or one time password [OTP] applications
• CPC Class Codes: H04W 12/77 Graphical identity

Abstract

A method of performing one-time password (OTP) authentication using a color code is provided. The method includes generating, by an OTP terminal and an authentication server, an OTP using a reference time, generating, by the OTP terminal, a color code corresponding to a binary code representing the OTP, displaying, by a display device, the color code, obtaining, by a camera, the displayed color code, decoding, by the authentication server, the obtained color code into the color code and generating a password which refers to the decoded binary code, and performing, by the authentication server, authentication by comparing the generated OTP and the password.

Claims

1. A method of performing one-time password (OTP) authentication using a color code, comprising:

generating, by an OTP terminal and an authentication server, an OTP using a reference time;

generating, by the OTP terminal, a color code corresponding to a binary code representing the OTP;

displaying, by a display device, the color code;

obtaining, by a camera, the displayed color code; and

performing, by the authentication server, authentication by comparing the generated OTP and a password represented by the color code.

2. The method of claim 1, wherein the color code is configured as a first color corresponding to 0 and a second color corresponding to 1 with respect to a series of binary numbers configuring the binary code.

3. The method of claim 1, wherein the OTP terminal includes a code table in which different colors are matched to binary sequences configured as two-or-more digit binary numbers, respectively, and converts the binary code into the color code using the code table.

4. The method of claim 1, wherein the display device sequentially displays the color code in a predetermined region according to a sequence of characters and a sequence of a binary code configuring the OTP.

5. The method of claim 1, wherein the OTP terminal changes a color of a code configuring the color code according to the reference time, and the authentication server decodes the obtained color code into the binary code based on the reference time.

6. The method of claim 1, wherein the OTP terminal generates the color code by adding a dummy color at a specific position of the color code based on the reference time, and the authentication server decodes the generated color code into the binary code by considering the dummy color added at the specific position of the color code according to the reference time.

7. The method of claim 4, wherein the display device changes a position of a region displaying the color code according to the reference time, and the authentication server decodes the binary code in consideration of the changed position of the region according to the reference time in an image obtained by the camera.

8. The method of claim 1, further comprising:

generating, by the authentication server, the password by decoding the color code obtained by the camera into the binary code.

9. The method of claim 1, further comprising:

generating, by the display device, the password by decoding the color code obtained by the camera into the binary code.

10. A one-time password (OTP) authentication server using a color code, comprising:

an OTP generation device configured to generate an OTP according to a reference time;

a communication module device configured to receive an image generated by obtaining a display screen on which a color code is displayed;

a storage device configured to store a code table including a color matching a binary number or a binary sequence; and

a central processing unit (CPU) configured to extract the color code from the image, convert the color code into a series of binary codes using the code table, and perform authentication based on whether the series of binary codes correspond to the OTP.

11. The OTP authentication server of claim 10, wherein the CPU converts the color code into the binary code while excluding a dummy color located at a specific position of the color code according to the reference time.

12. The OTP authentication server of claim 10, wherein the code table includes information in which the color matching the binary number or the binary sequence is changed according to the reference time.

13. The OTP authentication server of claim 10, wherein the image includes the color code in a predetermined region according to a sequence of characters configuring the OTP and a sequence of a binary code corresponding to the characters.

14. The OTP authentication server of claim 13, wherein the CPU sets a position of the region or a sequence of a region in which the color code is output to be different according to the reference time, and converts the color code into the binary code.

15. A one-time password (OTP) terminal, comprising:

a storage device configured to store a first code for generating an OTP, a second code for converting the OTP into a color code, and a code table including a color matching a binary number or a binary sequence;

a central processing unit (CPU) configured to generate the OTP based on a reference time using the first code, convert a binary sequence representing the generated OTP using the second code and the code table into a color code configured as a series of color values, and transmit the color code to a display device; and

the display device configured to display the series of color values at a specific region according to a reference sequence.

16. The OTP terminal of claim 15, wherein the CPU adds a dummy color located at a specific position of the color code according to the reference time.

17. The OTP terminal of claim 15, wherein the code table includes information in which the color matching the binary number or the binary sequence is changed according to the reference time.

18. The OTP terminal of claim 15, wherein the reference sequence is a sequence of characters configuring the OTP and a sequence of a binary code corresponding to the characters.

19. The OTP terminal of claim 15, wherein the display device displays a position of the specific region or a sequence of the specific region in which the color code is displayed to be different according to the reference time.