| Title | Highly Efficient and Revocable CP-ABE with Outsourcing Decryption for IoT |
| Publication Type | Conference Paper |
| Year of Publication | 2021 |
| Authors | Abdollahi, Sina, Mohajeri, Javad, Salmasizadeh, Mahmoud |
| Conference Name | 2021 18th International ISC Conference on Information Security and Cryptology (ISCISC) |
| Date Published | sep |
| Keywords | Ciphertext Policy ABE, Communication channels, Computational modeling, Costs, CP-ABE, Encryption, Information security, Internet of Things, outsourced decryption, outsourcing, Pairing-Free, policy-based governance, pubcrawl, revocation, Scalability, Standards |
| Abstract | In IoT scenarios, computational and communication costs on the user side are important problems. In most expressive ABE schemes, there is a linear relationship between the access structure size and the number of heavy pairing operations that are used in the decryption process. This property limits the application of ABE. We propose an expressive CP-ABE with the constant number of pairings in the decryption process. The simulation shows that the proposed scheme is highly efficient in encryption and decryption processes. In addition, we use the outsourcing method in decryption to get better performance on the user side. The main burden of decryption computations is done by the cloud without revealing any information about the plaintext. We introduce a new revocation method. In this method, the users' communication channels aren't used during the revocation process. These features significantly reduce the computational and communication costs on the user side that makes the proposed scheme suitable for applications such as IoT. The proposed scheme is selectively CPA-secure in the standard model. |
| DOI | 10.1109/ISCISC53448.2021.9720469 |
| Citation Key | abdollahi_highly_2021 |
Highly Efficient and Revocable CP-ABE with Outsourcing Decryption for IoT