Lightweight attribute-based signcryption (ABSC) method for cloud-fog-assisted internet-of-things (IoT)
US12206795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2021 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Mar 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/72
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A lightweight attribute-based signcryption (ABSC) method for cloud-fog-assisted Internet-of-things: performing, by a central authority, system initialization to generate a system key pair, and disclosing a public key, the public key including a symmetric encryption algorithm (SEA) and a key derivation function (KDF); generating, by the central authority, a decryption key and an outsourcing decryption key based on a decryption attribute set of a data user, and generating a signature key and an outsourcing signature key based on a signature access structure; calling, by a data owner, a fog node for outsourcing signature, performing symmetric encryption on a plaintext based on a symmetric key, and performing ABSC on the symmetric key based on a defined encryption access structure; and calling, by the data user, a fog node for outsourcing signature verification, calling a fog node for outsourcing decryption, and performing symmetric decryption on a ciphertext based on an outsourcing decryption result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.