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Lecture Notes in Computer Science
We propose a new public key trace and revoke scheme secure against adaptive chosen ciphertext attack. Our scheme is more efficient than the DF scheme suggested by Y. Dodis and N. Fazio  . Our scheme reduces the length of enabling block of the DF scheme by (about) half. Additionally, the computational overhead of the user is lower than that of the DF scheme; instead, the computational overhead of the server is increased. The total computational overhead of the user and the server is the samedoi:10.1007/978-3-540-40061-5_23 fatcat:w3hefl7hqrc2xj2nafokytfafi