Patent ID: 7225166
Filing Date: 2007-05-29
Classification: G06K,G06Q,G07B

Abstract:
1. A method of verifying the authenticity of indicia comprising: embedding identification and encrypted device data into an indicia, wherein the embedding of the identification and encrypted device data further comprises the steps of; providing device data to a first hash function to yield a first hash value; providing the first hash value to a first digital signature function utilizing a device private key to yield a first digital signature value; incorporating the identification data, the first hash value and the first digital signature value into the indicia; providing the device data and a device public key to a second hash function to yield a second hash value; providing the second hash value to a second digital signature function utilizing a vendor private key to yield a second signature value; and incorporating the second hash value and a vendor public key into the indicia; utilizing the identification data to retrieve authentication data for deciphering the encrypted device data; and determining a validity of the indicia using the deciphered device data.