Plaintext-Verifiably-Checkable Encryption and Its Extension in Dual-Server Setting

Plaintext-Verifiably-Checkable Encryption and Its Extension in Dual-Server Setting

Blog Article

Plaintext-checkable encryption (PCE), first introduced by Canard et al., allows users searching on encrypted data through plaintexts.It provides a useful primitive in the cloud computing security.However, existing PCE schemes could not guarantee verifiability to prevent from malicious adversaries.

To concentrate with, we Fridge Fuse Cable provide the notion of plaintext-verifiably-checkable encryption (PVCE).Our PVCE scheme could check that if a ciphertext is valid, even though it could pass the check procedure, to avoid malicious ciphertexts.Furthermore, we extend the work in dual-server setting, called dual-server plaintext-verifiably-checkable encryption (DS-PVCE), to resist offline message recover attack.We also give the security definition IND-CCA-FS, IND-CCA-BS and IND-CCA-BS-II in standard model for DS-PVCE and prove that DS-PVCE is secure under these security notions.

Then we give constructions of Acrylic Shaking Stand PVCE and DS-PVCE from pairing-friendly smooth projective hash function (PF-SPHF) and their instantiations based on k-MDDH assumption.At the end of this paper, we provide implementation to compare existing PCE schemes and our schemes, which shows that DS-PVCE has very high check efficiency compared with other PCE schemes.