| 摘要 |
A system and method for enabling the verification of the authenticity of a product identification circuit, wherein the checking is based on an encryption key (11) stored to the product identification circuit (10). The encryption key has been stored to the product identification circuit so that one cannot read it from outside the circuit. In addition, there is in the circuit a public memory (13) that can be read from outside the circuit. Arranged on the product identification circuit are data processing means (12) that are capable of computing a check sum (16) based on the information contained in the circuit. To compute the check sum, the encryption key stored to the circuit is used. A corresponding key has also been stored to the database of the central system (19). In checking, the product identification circuit is read by the reader (18). The check sum of the product identification circuit and the public information used for the computation thereof are transmitted to the central system, which computes the corresponding check sum and compares it with the check sum received from the product identification circuit. In case the sum matches, the information contained in the identifier is original.
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