Supervision-friendly block chain content privacy protection system, message sending method and message query method
A privacy protection system and blockchain technology, applied in the field of computer information security, can solve problems such as the inability to effectively supervise user privacy, and achieve the effect of ensuring data security and integrity and enhancing security
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Embodiment 1
[0043] The embodiment of the present invention provides a supervision-friendly blockchain content privacy protection system, including a server and a client,
[0044] The server is located on the Ethereum platform and implemented in the form of smart contracts, including the first communication module, the first encryption and decryption management module and the supervision authority management module. The decryption management module is used to store and manage encrypted data, and the supervision rights management module is used to verify user rights and provide super administrator rights for authorized third parties. Among them, the Ethereum platform can provide public chain and test chain environments, And in the test chain, the transaction information and content of each chain can be displayed in real time, and the operation and data storage of the server can be tested;
[0045] The client uses a browser as a carrier, and an Ethereum wallet application is installed on the...
Embodiment 2
[0090] Based on the same inventive concept, this embodiment provides a message sending method based on a supervision-friendly blockchain content privacy protection system, including:
[0091] The client obtains the message content and the receiver's address, generates the first session key used in this session, and uses the first session key to symmetrically encrypt the message content;
[0092] The client obtains the public key from the server, and asymmetrically encrypts the first session key used in this session;
[0093] The client sends the encrypted first session key, the encrypted message content, and the address of the recipient to the server;
[0094] The session record is stored on the chain, and the session record includes the encrypted first session key, the encrypted message content, the address of the receiver, and the address of the sender.
[0095] See figure 1 , is a flow chart of sending a message by a user in the embodiment of the present invention, where ...
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