Anonymous Identity-Based Key Scheme in Application of Privacy Protection

With the advancement of cloud computing application and research, there is a lot of data interaction between the users and the cloud computing platforms where exists a threat to the transmission and storage of users' data. Providing an efficient revocation mechanism for identity-based encryption (IBE) is very important since a user's credential (or private key) can be expired or revealed. For the current identity-based encryption program is not anonymous. We construct a new identity-based anonymous encryption scheme (AIBKE) based on the character of bilinear group and the bilinear DH. The new scheme not only solves the problem that the existing scheme can not protect the privacy of the receiver, but also ensures anonymous that both sender and receiver of the signcryption program. The scheme can satisfy both semantic security, unforgeability, and anonymity.