There exists a key escrow issue in ciphertext-policy attribute-based encryption (CP-ABE).
The key generator center issues all users' secret keys and can decrypt each ciphertext by …

Attribute based encryption (ABE)[13] determines decryption ability based on a user's
attributes. In a multi-authority ABE scheme, multiple attribute-authorities monitor different …

With the recent adoption and diffusion of the data sharing paradigm in distributed systems
such as online social networks or cloud computing, there have been increasing demands …

Ciphertext-policy attribute-based encryption (CP-ABE) is a very promising encryption
technique for secure data sharing in the context of cloud computing. Data owner is allowed …

Registration-based encryption (RBE) was recently introduced as an alternative to identity-
based encryption (IBE), to resolve the key-escrow problem: In RBE, the trusted authority is …

Abstract Attribute-Based Signature (ABS), where messages are signed concerning a signing
strategy conveyed as predicates, provides a necessary platform for implementing fine …

In this work, we introduce the notion of registration-based encryption (RBE for short) with the
goal of removing the trust parties need to place in the private-key generator in an IBE …

We introduce a new form of encryption that we name matchmaking encryption (ME). Using
ME, sender S and receiver R (each with its own attributes) can both specify policies the other …

One concern in using cloud storage is that the sensitive data should be confidential to the
servers which are outside the trust domain of data owners. Another issue is that the user …

Digital Twin (DT) technology has emerged as a robust mechanism for overseeing and
improving the lifecycle processes of the Industrial Internet of Things (IIoT) by creating their …