Electronic Health Records (EHRs) are entirely controlled by hospitals instead of patients,
which complicates seeking medical advices from different hospitals. Patients face a critical …

Privacy and security are the most important issues to the popularity of cloud computing
service. In recent years, there are many research schemes of cloud computing privacy …

Dual system encryption techniques introduced by Waters in Crypto'09 are powerful
approaches for constructing fully secure functional encryption (FE) for many predicates …

We propose two new ciphertext policy attribute-based encryption (CP-ABE) schemes where
the access policy is defined by AND-gate with wildcard. In the first scheme, we present a …

Lightweight devices, such as radio frequency identification tags, have a limited storage
capacity, which has become a bottleneck for many applications, especially for security …

Attribute-based signature (ABS) is a versatile and useful cryptogrammic technology. In an
ABS scheme, every signer is distributed a signing secret key in term of her/his attributes, and …

Blockchain-Based Healthcare System (HS-BC) is an electronic medical record (EMR) data-
sharing system, which significantly facilitates the storage, access, and sharing of EMR data …

Designing lightweight security protocols for cloud-based Internet-of-Things (IoT) applications
for battery-limited mobile devices, such as smart phones and laptops, is a topic of recent …

Forward secrecy is considered an essential design goal of modern key establishment (KE)
protocols, such as TLS 1.3, for example. Furthermore, efficiency considerations such as zero …

Ciphertext-policy attribute-based encryption (CP-ABE) scheme can be deployed in a mobile
cloud environment to ensure that data outsourced to the cloud will be protected from …