REPLACEABLE ITEM AUTHENTICATION

• Main Authors: PANSHIN STEPHEN D, NESS ERIK D, WARD JEFFERSON P
• Format: Patent
• Language: English; Korean
• Published: 30.05.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

호스트 디바이스의 교체가능 물품은 비휘발성 메모리 및 로직을 포함한다. 비휘발성 메모리는 패스워드 또는 인증 값, 및/또는 암호화 키를 저장한다. 로직은 패스워드에 대한 요청에 최대 허용 횟수로 응답하여 호스트 디바이스 내의 교체가능 물품을 인증한다. A print substance cartridge for a printing device includes a supply of print substance for the printing device, a non-volatile memory, and logic. The memory store authentication values by which the print substance cartridge is authenticated by the printing device, and/or a cryptographic key from which authentication values are able to be generated within the print substance cartridge. The memory stores hash values corresponding to authentication values and by which the authentication values are verified by the printing device. The logic is to, in response to a request from the printing device for an authentication value, provide the requested authentication value to the printing device. The logic is to, in response to a request from the printing device for the hash value corresponding to the authentication value, provide the hash value corresponding to the authentication value to the printing device.