| 摘要 |
According to the present invention, the unauthorized refill of a retaining cartridge is prevented by providing a smart button cell affixed to a retaining cartridge. The smart button cell is loaded with information specific to both the vendor and the retaining cartridge and the information is cryptographically signed. The smart button cell is operatively inserted into a host machine, having a memory and a processor, in a manner enabling communication of information between the smart button cell and the memory of the host machine. The host machine then reads and verifies the cryptographic signature of the information to determine if the retaining cartridge is authorized. If the host machine determines the cartridge is authorized, then the machine operates under normal conditions. If however, the host machine determines the cartridge is not authorized then operation is terminated. After each time the cartridge is refilled the number of refills is recorded and used in determining a new cryptographic signature.
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