Blockchain Privacy Data Protection Method Based on HEVC Video Steganography

Blockchain is a shared digital public ledger that cannot be changed once transactions are recorded and verified. Since most blockchain nodes retain copies of the ledger, the blockchain brings the benefits of decentralization while also bringing privacy leakage issues. With the continuous development of blockchain applications, how to protect the privacy data on the blockchain platform is a very worthwhile research question. This paper first divides each blockchain transaction data into two parts: sensitive data and basic data, and then encrypts and hides the sensitive data into the HEVC video to protect the privacy transaction data of the blockchain. The experimental results show that this HEVC video steganography algorithm can effectively increase the privacy data embedding capacity and get good visual quality.