Abstract: There are many types of information features in the supply chain privacy network, and it is difficult to determine data ciphertext, which leads to high encryption difficulty. Therefore, a chaotic sequence based information encryption algorithm is proposed. Considering the risk of privacy information being leaked or tampered with, the risk variation is used as a reference feature for encryption algorithms. The risk index is obtained by solving the same, different, and opposite risk variation characteristics of privacy information through ternary and quinary functions. A chaotic sequence is established based on the risk index of the information to be
encrypted, a key sequence is generated through the chaotic sequence, the dimensions corresponding to different types of information are calculated, and finally the information encryption is achieved through chaotic mapping between the information and the key sequence. Experimental data shows that the proposed algorithm has high accuracy in encrypting supply chain privacy network information, low packet loss rate, and can effectively improve the phenomenon of privacy information leakage and loss during transmission.

Key words: chaotic sequence, supply chain privacy network, information encryption, five element correlation function, key sequence