The invention discloses a method, a device and a
system for realizing
data access control based on a digital contract, relates to the field of
data security, solves the problem of insufficient security of existing
data access, and comprises the following steps: S1, acquiring an electronic contract, generating a digital contract element
list, and checking; s2, generating a contract according to a consistency
verification result to obtain a digital contract, and deploying the digital contract in combination with a data flow alliance chain; s3, extracting a
data connection node to verify and judge the
data request, and controlling the data according to a
verification and judgment result; s4, performing
authority control on the data user, performing data output on the data user based on the
authority control, and collecting and uploading full-flow information of data output to an alliance chain for evidence storage; s5, monitoring the digital contract, and controlling the digital contract in real time; according to the invention, the security and stability of
data access can be effectively improved.