1. Divertible protocols and atomic proxy cryptography;Blaze,1998
2. Improved proxy re-encryption schemes with applications to secure distributed storage;Ateniese;ACM Trans. Inf. Syst. Secur.,2006
3. Highly reliable and highly secure online storage platform supporting “timeon” regza cloud service;Miki;Toshiba Rev.,2013
4. Securely obfuscating re-encryption;Hohenberger,2007