PRODUCT AUTHENTICATION USING INTEGRATED CIRCUITS
First Claim
1. A method to authenticate a product comprising:
- providing a first encoding/decoding chip with the product, wherein the first chip is storing a serial number; and
separately providing a second encoding/decoding chip wherein said authentication method comprises steps of;
a) both the first chip and the second chip decode the serial number from the first chip if this serial number is given as encoded, or encode the serial number from the first chip if the serial number is given as decoded; and
b) the second chip compares its result of encoding or decoding against the result of encoding or decoding from the first chip in step (a)
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Accused Products
Abstract
Authentication of a product could be accomplished by utilizing encryption and decryption engines onboard two integrated circuits namely a DECENC chip and a READER chip. A unique serial number in either an encrypted or un-encrypted format is programmed into eFuses, or OTP devices on board the DECENC chip where this chip is then attached to the product. During the authentication procedure, the encrypted and decrypted serial number on board the DECENC chip is transferred to the READER chip. The READER chip subsequently performs a decryption of the serial number from the first chip if this serial number is in encrypted form or performs an encryption of the serial number from the first chip if this serial number is in un-encrypted form. The READER chip then compares its result of decryption or encryption against the corresponding decrypted or encrypted versions of the serial number received from the DECENC chip. If the results of decryption or encryptions for both chips are the same, then the READER chip signals an authentic product, otherwise it will reject the product as fake.
22 Citations
25 Claims
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1. A method to authenticate a product comprising:
providing a first encoding/decoding chip with the product, wherein the first chip is storing a serial number; and
separately providing a second encoding/decoding chip wherein said authentication method comprises steps of;a) both the first chip and the second chip decode the serial number from the first chip if this serial number is given as encoded, or encode the serial number from the first chip if the serial number is given as decoded; and b) the second chip compares its result of encoding or decoding against the result of encoding or decoding from the first chip in step (a) - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method to authenticate a product comprising:
providing a product with a label containing an encoded or decoded serial number and a first encoding/decoding chip storing the same serial number in an encoded or decoding format; and
separately providing a second encoding/decoding chip; and
a verifier entity that carries out the task of verification wherein said authentication method comprises steps of;a) the verifier requiring the first chip to decode its stored serial number if this serial number is encoded, or to encode its stored serial number if this serial number is decoded; b) the verifier requiring the second chip to decode the serial number on the label if this serial number is encoded, or to encode the serial number on the label if this serial number is decoded; and c) comparing the encoding/decoding results in step (a), and (b) by the verifier - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
Specification