IMAGE SENSOR, IMAGE PROCESSING SYSTEM HAVING THE SAME, AND OPERATING METHOD THEREOF

An image sensor includes: a non-volatile memory (NVM) that stores an encoded private key and partial information of the private key using a first random number generated by repeating a first random number generation operation using the partial information of the private key, and the safety circuit performs decryption operation on the ciphertext received from the controller. The security circuit includes a self-recursive decoder that receives the encoded private key from the NVM during a decryption operation, repeats a second random number generation operation using partial information of the private key to generate a second random number, and restores the encoded private key to a private key using the second random number, and a cryptographic module that encrypts the encoded private key from the NVM during the decryption operation. The cryptographic module decrypts the ciphertext using the recovered private key. 一种图像传感器包括：非易失性存储器(NVM)和安全电路，所述非易失性存储器使用通过使用私钥的部分信息重复第一随机数生成操作而生成的第一随机数来存储编码的私钥和私钥的部分信息，所述安全电路对从控制器