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A multiserver architecture consisting of multiple servers provides resources and services for clients by way of open channels. Thus, a cryptographic protocol should be offered to ensure the legitimacy of both clients and servers, and to provide communication confidentiality. In the past, a large number of ID-based mutual authentication and key agreement(More)
Revocation problem is a critical issue for key management of public key systems. Any certificate-based or identity (ID)-based public key systems must provide a revocation method to revoke misbehaving/compromised users from the public key systems. In the past, there was little work on studying the revocation problem of ID-based public key systems. Most(More)
Signature scheme is one of important primitives in modern cryptography, which may offer functionalities of user identification, non-repudiation, and message authentication. With the advent of identity (ID)-based public key system (IDPKS) with bilinear pairings, many cryptographic schemes and protocols based on the IDPKS system have been proposed. Though the(More)
Anonymous multi-receiver identity (ID)-based encryption (anonymous MIBE) allows a sender to use the identities of multiple receivers to encrypt messages such that only the selected receivers can decrypt the messages while nobody, except the sender, knows who the other selected receivers are. Recently, several anonymous MIBE schemes were proposed. However,(More)