Abstract: A method for identity verification, a consumable box and a storage medium are provided. The method includes a first key verification and a second key verification. The second key verification includes: receiving, by a consumable chip, a reading instruction for serial number reading; sending, by the consumable chip, a first serial number based on the reading instruction; sending, by the consumable chip, a first status code in response to a first verification code, wherein the first verification code is obtained based on the first serial number; receiving again, by the consumable chip, the reading instruction for serial number reading; and sending, by the consumable chip, a second serial number based on the reading instruction, and completing, the identity verification based on the second serial number.

Abstract: A method for chip encryption includes obtaining a fuse value and a trim value of a chip and setting an encryption algorithm, setting the fuse value and the trim value as parameters of the encryption algorithm and obtaining a secret key which is unique for the chip accordingly to the encryption algorithm, and storing the fuse value, the trim value and the secret key in the chip. Since the fuse value and trim value of the chip are unique naturally, the secret key obtained from the same matrix chip for different applications or different matrix chips for the same application are different from each other, thereby increasing expenses and difficulty for crackers to crack the chip and protecting user's intellectual property perfectly.