| 摘要 |
The embodiments of the present invention relate to the technical field of cloud computing. Disclosed are a data access method based on a cloud computing platform, and a user terminal. The method comprises: acquiring an access request regarding a queried data ciphertext of a cloud computing platform, wherein the access request carries a decryption key, and the decryption key comprises a user precision identity identifier and a user attribute identifier; and if the user precision identity identifier belongs to an identity identifier set comprised in an access structure of the data ciphertext, and/or if the user attribute identifier belongs to a user attribute identifier set comprised in the access structure of the data ciphertext, restoring the data ciphertext to a data plaintext. By means of the embodiments of the present invention, fine-grained access control can be effectively performed on data of a cloud computing platform. |
