High-security-level data access method and device based on structured light array identification

The invention provides a high-security-level data access method and device based on structured light array identification. The device comprises a structured light array comparison unit, a legal structured light array information storage unit, a user level storage unit, a user verification information storage unit, a first decryption circuit, a verification key storage unit, a key generation unit,a digital signature operation unit, a user information comparison unit, a read-write control circuit and a data storage unit. According to the invention, the acquired structured light array information of the current user is identified to realize access to the data storage unit, and different access key information is acquired according to the security level of the user after the structured lightarray information passes comparison; and whether the current user is allowed to access the data storage unit or not is determined by authenticating the digital signature information of the user, so that the security and unique