Cryptanalysis and Repair of "Decentralized Multi-Authority ABE for NC$^1$ from BDH"

We present a plaintext-recovery attack on the decentralized multi-authority attribute-based encryption construction of Datta, Komargodski, and Waters Journal of Cryptology, 2023. The attack succeeds in the claimed static model with one corrupt authority and two users whose individual attribute se...

Anonymous Authentication using Attribute-based Encryption

In today's digital age, personal data is constantly at risk of compromise. Attribute-Based Encryption ABE has emerged as a promising approach to privacy-preserving data protection. This paper proposes an anonymous authentication mechanism based on ABE, which allows users to authenticate without...

Multiparty Selective Disclosure Using Attribute-Based Encryption

This study proposes a mechanism for encrypting SD-JWT Selective Disclosure JSON Web Token Disclosures using Attribute-Based Encryption ABE to enable flexible access control on the basis of the Verifier's attributes. By integrating Ciphertext-Policy ABE CP-ABE into the existing SD-JWT framework, t...

Securing Immersive 360 Video Streams through Attribute-Based Selective Encryption

Delivering high-quality, secure 360� video content introduces unique challenges, primarily due to the high bitrates and interactive demands of immersive media. Traditional HTTPS-based methods, although widely used, face limitations in computational efficiency and scalability when securing these...