METHOD AND APPARATUS FOR GENERATING AND AUTHENTICATING SECURITY DOCUMENTS

• US 20140010403A1
• Filed: 03/27/2012
• Published: 01/09/2014
• Est. Priority Date: 03/29/2011
• Status: Active Grant

• Current Assignee: Jura Trade, Limited
• Original Assignee: Jura Trade, Limited
• Inventors: Adam, Bence, Takacs, Ferenc, Manhercz, Kalman
• Granted Patent: US 9,652,814 B2
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G06T 1/005 Robust watermarking, e.g. average attack or collusion attack resistant
• CPC Class Codes: G07D 7/202 using pattern matching
• CPC Class Codes: H04L 2209/805 Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
• CPC Class Codes: H04L 9/3242 involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
• CPC Class Codes: H04L 9/3247 involving digital signatures

Abstract

A method and system for generating a document for use with personal data and an image, including: inputting the personal text data into the processor; inputting the image into the processor; generating, by the processor, a personal identifier based on the personal text data, a first Message Authentication Code (MAC) based on the personal identifier; generating, by the processor, a first wave structure based on the MAC; generating, by the processor, waved microtext based on the wave structure and the personal text data; generating, by the processor, a letter screen image from the input image with the waved microtext; and outputting the letter screen image. A method and system for verification of the generated document is also disclosed.

Claims

1. A method for generating a document for use with a personal identifier, personal data and an image, the method comprising:

inputting the personal identifier into a processor;

inputting the personal text data into the processor;

inputting the image into the processor;

generating, by the processor, a first Message Authentication Code (MAC) based on the personal identifier;

generating, by the processor, a wave structure based on the MAC, the wave structure is defined as;

x′

y′

=f(x,y,a,b,c,d);

generating, by the processor, waved microtext based on the wave structure and the personal text data;

generating, by the processor, a letter screen image from the input image with the waved microtext; and

outputting the letter screen image.

2. The method of claim 1 wherein the wave structure is based on one of i) a round screen, ii) a line screen, iii) an elliptical screen, iv) a rotogravure screen, v) a stochastic screen, vi) a geometric screen, vii) a continuous tone screen, and viii) a programmable screen.

3. The method of claim 1, wherein the personal identifier is Machine Readable Zone (MRZ) information including name, passport number, nationality, date of birth, sex, passport expiration date and personal identity number.

4. The method of claim 3 wherein the personal identifier is based on an RFID, a digital signature, a fingerprint, or a social security number.

8. The method of claim 1, further comprising printing the output image onto a document for authentication.

9. The method of claim 8, wherein the document for authentication is a passport.

10. The method of claim 8, wherein the document is at least one of:

a check, currency, a ticket, a banknote, a credit card, a visa, a photo-identification card, a special event ticket, a stock/bond certificate, a bank check, a traveler'"'"'s check, an anti-counterfeiting label, a tax/postage stamp, a birth/death/marriage certificate, a vehicle/property registration card, a deed, and a certificate of title.

11. The method of claim 1, further comprising:

inputting the personal identifier into a document reader;

generating, by the document reader, a second Message Authentication Code (MAC) based on the personal identifier;

generating, by the document reader, a second wave structure based on the MAC;

scanning the output image by the document reader;

determining the first wave structure from the scanned output image;

comparing the first wave structure to the second wave structure;

generating an output signal based on the comparison.

12. The method of claim 11, wherein the output signal indicates:

i) approval of the scanned output image if the first wave structure matches the second wave structure;

or

ii) rejection of the scanned output image if the first wave structure is different than the second wave structure.

13. The method of claim 11 wherein the document authentication is performed by a PIM, a smartphone, a laptop computer, a nettop computer, a netbook computer, a tablet computer or a dedicated authentication device.

14. The method of claim 1, wherein the personal identifier is input into the at least one of the processor or the document reader based on optical character recognition.

18. A device for authenticating an output image generated by the method of claim 1, the device comprising:

means for inputting the personal identifier;

means for generating a second Message Authentication Code (MAC) based on the personal identifier;

means for generating a second wave structure based on the MAC;

means for scanning the output image;

means for determining the first wave structure from the scanned output image;

means for comparing the first wave structure to the second wave structure;

means for generating an output signal based on the comparison.

19. A method for document authentication for use with the document generated in accordance with the method of claim 1 comprising:

inputting the personal identifier into a document reader;

generating, by the document reader, a second Message Authentication Code (MAC) based on the personal identifier;

generating, by the document reader, a second wave structure based on the. MAC;

scanning the output image by the document reader;

determining the first wave structure from the scanned output image;

comparing the first wave structure to the second wave structure;

generating an output signal based on the comparison.

20. The method of claim 19, wherein the output signal indicates:

i) approval of the scanned output image if the first wave structure matches the second wave structure;

or

ii) rejection of the scanned output image if the first wave structure is different than the second wave structure.

21. The method of claim 1 wherein the wave structure is a sinus wave, where

x′

=x+a*sin(x)+b*sin(y)

y′

=y+c*sin(x)+d*sin(y).

22. The method of claim 1 wherein the structure is the linear combination of general functions, where

x′

=x+f_a(x)+f_b(y)

y′

=y+f_c(x)+f_d(y).

5. (canceled)

6. (canceled)

7. (canceled)

15. A system for generating a document for use with a personal identifier, personal data and an image, the system comprising:

means for inputting the personal identifier;

means for inputting the personal text data;

means for inputting the image;

means for generating a first Message Authentication Code (MAC) based on the personal identifier;

means for generating a first wave structure based on the MAC;

means for generating a waved microtext based on the wave structure and the personal text data ;

means for generating a letter screen image from the input image; and

means for rasterizing the letter screen with the waved microtext to generate an output image.

16. A system for generating a document for use with a personal identifier, personal data and an image, the system comprising:

a processor device;

an input device coupled to the processor;

an output device coupled to the processor;

the input device inputting the personal identifier, the personal text data and the image into the processor;

the processor generating i) a first Message Authentication Code (MAC) based on the personal identifier, ii) a first wave structure based on the MAC, iii) a waved microtext based on the wave structure and the personal text data, and iv) a letter screen image from the input image;

the processor outputting a rasterized output image comprising the letter screen and the waved microtext to the output device.

17. The system of claim 16, wherein the output device is at least one of a display and a printer.