1. Amazon web services. https://aws.amazon.com/cn/.
2. Interactive message-locked encryption and secure deduplication;Bellare,2015
3. Ciphertext-policy attribute-based encryption;Bethencourt,2007
4. Identity-based encryption from the weil pairing;Boneh;SIAM J. Comput.,2003
5. Reclaiming space from duplicate files in a serverless distributed file system;Douceur,2002