A Chip Data Security Transmission Method based on Command Control Word Mode

Aiming at the shortcomings of traditional security chip data transmission, a method of security chip data transmission based on command control word is proposed. The method divides the read command mode and write command mode of the security chip files into two kinds of representation methods. The read command and write command of the security chip files are transmitted by different data transmission methods. In the control word of read and write command mode of security chip files, the read and write commands of security chip files are transmitted in four ways: plaintext, ciphertext, plaintext + MAC and ciphertext + MAC. The properties of prohibit adding and updating are added to the writing command control word of security chip files. In the control word of read command and write command of security chip files, define the permissions that read command and write command operation need to satisfy.