Author(s)

Zhicheng Zhu, Zhipeng Dong and Qingmin Meng

Corresponding Author

Qingmin Meng

ABSTRACT

Blockchain can be divided into three categories, namely public blockchain, private blockchain and consortium blockchain. The consortium blockchain will be open to a specific organization and it is not completely decentralized since every ordinary user in the consortium blockchain must accept the authorization of the regulator. This work discusses the authorization based on the consortium blockchain, which can face the coexistence of human and robot transaction scenarios. The first step in the authorization process is to enter user information or device information. This information often does not contain the user's personal biological characteristics, which is not conducive to the regulator to quickly distinguish whether the trader is a normal human or a robot. In order to solve this problem, a spectrogram encryption design is proposed for consortium blockchain authorization. In this design, the voice information of multiple users is made into a spectrogram, which is then encrypted by hash operation, and finally stored in the consortium blockchain. The preliminary verification results show that the process can safely save user information and part of the transaction information.

KEYWORDS

Consortium blockchain, authorization, hash, traceability