Batch resource sharing method for untrusted cloud centers based on exclusive OR operation and chaos

The invention discloses an untrusted cloud center batch resource sharing method based on exclusive OR operation and chaos. Client A encrypts the resource Si with the initial key k1i, and then uploadsthe encrypted resource to the cloud center. When the client A creates a target key k2, the process key is calculated according to the initial key and the target key k2. Client A uses an asymmetric keyencryption algorithm to obtain the encrypted key PBK; The client A sends the process key and the PBK to the cloud center. The cloud center records a resource sharing list; The cloud center queries the resource sharing list, and sends the key PBK corresponding to the batch resource to the client B. After obtaining the PBK and the encrypted resource from the cloud center, the client B decrypts thePBK with its own private key to obtain the target key k2, and decrypts the target key k2 to obtain the decrypted shared resource. The invention solves the problem of high algorithm complexity and highclient pressure when encrypting resource sharing.