Blockchain-Based Trusted Instant Messaging Model Research

Instant messaging (IM) provides real-time communication between two or more participants over the Internet. Today's instant messaging products are proliferating and playing an increasingly important role in life. However, the problem of user identity and communication data leakage is gradually revealed. To address the data privacy and security problems brought by current IM systems, this paper proposes a trusted IM model based on blockchain technology, applying IPFS technology, blockchain technology combined with data encryption technology and distributed identity (DID) to design a decentralized instant messaging model, where user identity and data cannot be unilaterally tampered with or destroyed, ensuring the privacy of communication data. The overall structure of the system and the design of each module function are also introduced to provide new ideas for the study of a secure decentralized communication model.