We describe a public-key encryption system that remains secure even encrypting messages that depend on the secret keys in use. In particular, it remains secure under a "key cy...
Dan Boneh, Shai Halevi, Michael Hamburg, Rafail Os...
The ElGamal encryption scheme has been proposed several years ago and is one of the few probabilistic encryption schemes. However, its security has never been concretely proven bas...
Threshold public-key encryption (TPKE) allows a set of users to decrypt a ciphertext if a given threshold of authorized users cooperate. Existing TPKE schemes suffer from either lo...
Bo Qin, Qianhong Wu, Lei Zhang, Josep Domingo-Ferr...
A group key agreement (GKA) protocol allows a set of users to establish a common secret via open networks. Observing that a major goal of GKAs for most applications is to establish...
Qianhong Wu, Yi Mu, Willy Susilo, Bo Qin, Josep Do...