Group Signatures with Designated Traceability over Openers' Attributes

ePrint Report: Group Signatures with Designated Traceability over Openers' Attributes

Hiroaki Anada, Masayuki Fukumitsu, Shingo Hasegawa

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 …

attributes eprint report signatures