Design and Research of Credit Sharing Model Based on Blockchain and Agent Re-encryption

The traditional credit investigation mode is often prone to data tampering and data leakage due to its centralized data storage, and once the data is damaged, it is difficult to recover the data, which will make the security of credit investigation data and personal privacy under serious threat. To solve the above problems, this paper proposes a credit-sharing scheme based on blockchain and agent re-encryption. Firstly, blockchain technology is used to solve the problems of data centralization, easy data tampering, easy data leakage, and other problems existing in traditional credit investigation platforms. Secondly, the SM2 encryption function is used to construct the proxy re-encryption algorithm, and the blockchain technology is combined to realize the safe sharing of credit data. Moreover, the interplanetary file system is used to effectively solve the problems of traditional credit centralized storage and the difficult recovery of data damage. Finally, the secure analysis and performance analysis show that this scheme not only realizes the security sharing of credit data but also has certain advantages in the aspect of computing cost.