Ciphertext-Auditable Identity-Based Encryption

Chang-Lu Lin ； Yong Li ； Ke-Wei Lv ； Chin-Chen Chang

《International Journal of Network Security》 17卷1期 (2015/01) Pp. 23-28

https://doi.org/10.6633/IJNS.201501.17(1).03

並列摘要

Ciphertext-auditability of public key encryption scheme means that the ciphertext should been verified by any- one whether it was actually created by the public key. It also should satisfy two additional requirements: 1) no adversary can create a valid-looking ciphertext and then it can pass the verification process together with a public key and a plaintext; 2) the plaintext cannot be revealed from ciphertext without the help of the correct private key. This paper, in the first time, proposes an ciphertext-auditable identity-based encryption. Our scheme doesn't need the certificates and the sender can directly encrypt message via using the identity without the progress of public key authentication. Furthermore, the proposed scheme is provably secure under the standard model against the k-resilient ciphertext-auditability.

並列關鍵字

Ciphertext-auditability ； identity based encryption ； public key cryptography