We present an identity-based encryption (IBE) scheme in composite-order bilinear groups
with essentially optimal parameters: the ciphertext overhead and the secret key are one …

Attribute-based encryption (ABE) as one of the most interesting multi-recipient public
encryption systems, naturally requires some “tracing mechanisms” to identify misbehaving …

Digital signatures are perhaps the most important base for authentication and trust
relationships in large scale systems. More specifically, various applications of signatures …

Abstract Identity-Based Encryption (IBE) provides a compelling solution to the PKI
management problem, however it comes with the serious privacy consideration that a …

Salient in many cryptosystems, the exponent-inversion technique beganwithout
randomization in the random oracle model (SCIS'03, PKC'04), evolvedinto the Boneh-Boyen …

Group signature allows members to issue signatures on behalf of the group anonymously in
normal circumstances. When the need arises, an opening authority (OA) can open a …

A large number of parameterized complexity assumptions have been introduced in the
bilinear pairing setting to design novel cryptosystems and an important question is whether …

Abstract The Camenisch-Lysyanskaya rerandomizable signature (CL-RRS) scheme is an
important tool in the construction of privacy preserving protocols. One of the limitations of CL …

In practice, adversaries may be able to acquire a part of private state of cryptographic system
via side-channel attacks, on account of unexpected physical defects of cryptosystem, which …

Revocable Identity-Based Encryption (RIBE) allows feasible key revoke to enable dynamic
user management in certificateless system. The existing RIBE schemes fail to keep receivers …