2results about How to "Resolve trust issues" patented technology

The application relates to a kind of implementation methods of verifiable Internet of Things device data asset transaction, based on the data seller, blockchain and data buyer involved in Internet of Things data asset transaction system, the process for realizing verifiable data asset transaction is as follows: data seller publishes encrypted data on blockchain through smart contract, data buyer requests data according to needs and submits verification request.Smart contract is responsible for verifying the integrity and authenticity of data, and transmits decryption key to data buyer after verification.The data buyer decrypts the data using the key and completes the transaction.If the buyer finds that the decrypted data is abnormal, the smart contract is called to initiate arbitration.Through the confusion encryption mode, RSA accumulator technology, hash verification mechanism and on-chain arbitration mechanism, these attack behaviors are effectively resisted, and the privacy, integrity and verifiability of data transaction are ensured.

The invention discloses a multi-party charging data sharing method and device based on attribute encryption and electronic equipment, and the method comprises the steps: obtaining a data packaging ciphertext, a secret value packaging ciphertext, a first ciphertext and a second ciphertext, generating the data packaging ciphertext based on charging data, a public parameter and a secret value, generating the secret value packaging ciphertext based on the public parameter and the secret value, the first ciphertext is generated based on the secret value, the main public key and the access matrix, and the second ciphertext is generated based on the public parameter, the main public key and the secret value; if the public key of the user is registered to the main public key, calculating a first decryption component based on the private key of the user, the public parameter, the secret value packaging ciphertext and the second ciphertext; if the attribute of the user meets the strategy requirement corresponding to the access matrix, calculating a second decryption component based on the private key of the user and the first ciphertext; and decrypting the charging data based on the first decryption component and the second decryption component. According to the method, different permission requirements of large-scale users can be flexibly met, and the problem of rigidity caused by static permission allocation is avoided.