Constant-size ciphertexts in threshold attribute-based encryption without dummy attributes

• Main Authors: SUSILO, Willy, YANG, Guomin, GUO, Fuchun, HUANG, Qiong
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2018
• Subjects: Threshold attribute-based encryption; Constant size; Dummy attributes; Provable security; Data Storage Systems; Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/7290; https://ink.library.smu.edu.sg/context/sis_research/article/8293/viewcontent/1_s2.0_S002002551731099X_main.pdf
• Institution: Singapore Management University

Attribute-based encryption (ABE) is an augmentation of public key encryption that allows users to encrypt and decrypt messages based on users' attributes. In a (t, s) threshold ABE, users who can decrypt a ciphertext must hold at least t attributes among the s attributes specified by the encryp...