Group Signatures with Designated Traceability over Openers’ Attributes
Hiroaki Anada, Masayuki Fukumitsu, Shingo Hasegawa · International Journal of Networking and Computing · 2022
We propose a group signature scheme with a function of designated traceability; each opener has attributes, and a signer of a group signature can be traced by only the openers whose attributes satisfy the boolean formula designated by the signer. We describe syntax and security definitions of the scheme. Then we give a generic construction of the scheme by employing a ciphertext-policy attribute-based encryption scheme.