Data decryption method and device, equipment and storage medium

The invention relates to the field of artificial intelligence technology and big data, and discloses a data decryption method and device, equipment and a storage medium. The method comprises the following steps: acquiring an operation request uploaded by a first client, and performing authentication processing on the first client by adopting a signature authentication method according to the operation request to obtain an authentication result; according to the authentication result, judging whether the first client passes the authentication or not; if the first client passes the authentication, determining a ciphertext authorization range and a ciphertext operation range corresponding to the first client based on the authentication result; selecting an authority authentication ciphertext corresponding to the ciphertext authorization range from the database, and performing authorization decryption processing on the authority authentication ciphertext by adopting a signature authentication method to obtain an