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Anonymous Identity-Based Broadcast Encryption With Revocation For File Sharing, Jianchang Lai, Yi Mu, Fuchun Guo, Willy Susilo, Rongmao Chen

Faculty of Engineering and Information Sciences - Papers: Part A

Traditionally, a ciphertext from an identity-based broadcast encryption can be distributed to a group of receivers whose identities are included in the ciphertext. Once the ciphertext has been created, it is not possible to remove any intended receivers from it without conducting decryption. In this paper, we consider an interesting question: how to remove target designated receivers from a ciphertext generated by an anonymous identity-based broadcast encryption? The solution to this question is found applicable to file sharing with revocation. In this work, we found an affirmative answer to this question. We construct an anonymous identity-based broadcast encryption, which offers …