Database encryption and complete matching retrieval system

The invention discloses a database encryption and complete matching retrieval system, and relates to the technical field of data encryption and matching retrieval. The system comprises a data encryption and storage module and an encrypted data query module, the data encryption and storage module comprises an encryption algorithm initialization unit, a data encryption execution unit, a ciphertext data visualization unit and an encrypted data storage unit; and the encrypted data query module comprises a query receiving unit, a query analysis unit, a data encryption and decryption unit, an encrypted data visualization unit and a query result return unit. According to the method, the existing symmetric encryption algorithm is combined with the own visualization algorithm, so that the high security of data storage can be ensured, and the ciphertext data can be ensured to be quickly matched by using the database index during complete matching query; according to the method, the retrieval efficiency of the ciphertex