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Membership Encryption And Its Applications, Fuchun Guo, Yi Mu, Willy Susilo, Vijay Varadharajan
Membership Encryption And Its Applications, Fuchun Guo, Yi Mu, Willy Susilo, Vijay Varadharajan
Professor Willy Susilo
We propose a new encryption primitive called Membership Encryption. Let P(G) be a privacy-preserving token on a group attribute/identity G, such that given P(G) it is hard to know the attributes in G. In this membership encryption, if an encryption takes as input an attribute A and the token P(G) , the decryption requires holding the membership A ∈ G, i.e., A belongs to this group attribute. Membership encryption is applicable in constructing membership proof A∈P(G) with privacy preserving on group attribute and the membership. Membership encryption can be also utilized to construct an efficient two-round K-out-of-N oblivious transfer protocol. …
Public Key Encryption With Keyword Search Secure Against Keyword Guessing Attacks Without Random Oracle, Liming Fang, Willy Susilo, Chunpeng Ge, Jiandong Wang
Public Key Encryption With Keyword Search Secure Against Keyword Guessing Attacks Without Random Oracle, Liming Fang, Willy Susilo, Chunpeng Ge, Jiandong Wang
Professor Willy Susilo
The notion of public key encryption with keyword search (PEKS) was put forth by Boneh et al. to enable a server to search from a collection of encrypted emails given a “trapdoor” (i.e., an encrypted keyword) provided by the receiver. The nice property in this scheme allows the server to search for a keyword, given the trapdoor. Hence, the verifier can merely use an untrusted server, which makes this notion very practical. Following Boneh et al.’s work, there have been subsequent works that have been proposed to enhance this notion. Two important notions include the so-called keyword guessing attack and …