METHOD OF DETECTING A CONTERFEIT RFID TAG

• US 20100134287A1
• Filed: 12/02/2008
• Published: 06/03/2010
• Est. Priority Date: 12/02/2008
• Status: Abandoned Application

• Current Assignee: Joseph Carmine Lettieri
• Original Assignee: Joseph Carmine Lettieri
• Inventors: Lettieri, Joseph Carmine
• Application Number:
  US12/326,127
• Publication Number:
  US 20100134287A1
• Time in Patent Office: Days
• US Class Current: 340/572.100
• CPC Class Codes: H04L 2209/805 Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
• CPC Class Codes: H04L 9/3226 using a predetermined code, e.g. password, passphrase or PIN network architectures or network communication protocols for supporting authentication of entities using passwords in a packet data network H04L63/083

Abstract

A method for determining a counterfeit from authentic RFID tag includes: assigning a unique tag identification number T wherein T=tag identification number TID; locking the unique number T into tag memory; assigning a secondary unique number E wherein E=a unique electronic product code EPC; locking the unique number E into tag memory; deriving a kill password K calculated based on an encryption algorithm f wherein K=f(T,E); locking the kill password K into tag memory; reading from the tag T′=TID; E′=EPC; and K′=kill password; calculating an expected kill password K_e based on the encryption algorithm f wherein K_e=f (T′,E′); comparing K_e to K′; concluding the tag is suspected counterfeit if K_e does not equal K′. It may further be concluded that the tag is authentic should the comparison result in K_e equaling K′.

Claims

1. A method for determining a counterfeit from authentic RFID tag, comprising:

assigning a unique tag identification number T wherein T=tag identification number TID;

locking the unique number T into tag memory;

assigning a secondary unique number E wherein E=a unique electronic product code EPC;

locking the unique number E into tag memory;

deriving a kill password K calculated based on an encryption algorithm f wherein K=f(T,E);

locking the kill password K into tag memory;

reading from the tag T′

=TID;

E′

=EPC; and

K′

=kill password;

calculating an expected kill password K_e based on the encryption algorithm f wherein K_e=f(T′

,E′

);

comparing K_e to K′

;

concluding the tag is suspected counterfeit if K_e does not equal K′

.

2. The method of claim 1, wherein the access password, user memory, or other user programmable field is used in place of the kill password and/or the EPC.

3. The method of claim 1, wherein further conducting the assigning and locking of the tag identification number T by a tag sourcing first party.

4. The method of claim 1, wherein further comprising incorporating the RFID tag into an object by a tag incorporating second party.

5. The method of claim 4, wherein further comprising deriving a kill password K by the tag incorporating second party.

6. The method of claim 5, wherein further comprising conducting the assigning and locking of the tag identification number TID by a RFID tag sourcing party.

7. The method of claim 6, wherein the tag incorporating party is an object sourcing party.

8. The method of claim 7, wherein the RFID tag sourcing party is a RFID manufacturer.

9. The method of claim 8, wherein the object is a tire.

10. The method of claim 1, wherein further comprising concluding the tag is authentic if K_e=K′

.

11. A method for determining a counterfeit from an authentic RFID tag, comprising:

assigning a unique tag identification number T by a first party wherein T=tag identification number TID;

locking the unique number T into tag memory by the first party;

transferring the RFID tag to a second party;

assigning a secondary unique number E by the second party wherein E=a unique electronic product code EPC;

locking the unique number E into tag memory by the second party;

deriving a kill password K by the second party calculated based on an encryption algorithm f wherein K=f(T,E);

locking the kill password K by the second party into tag memory;

reading from the tag T′

=TID;

E′

=EPC; and

K′

=kill password;

calculating an expected kill password K_e based on the encryption algorithm f wherein K_e=f(T′

,E′

);

comparing K_e to K′

;

concluding the tag is suspected counterfeit if K_e does not equal K′

.

12. The method of claim 11, wherein further comprising concluding the tag is an authentic tag if K_e equals K′

.