Title

Forgery Attack to an Asymptotically Optimal Traitor Tracing Scheme

Publication Type

Conference Proceeding Article

Publication Date

5-2007

Abstract

In this paper, we present a forgery attack to a black-box traitor tracing scheme [2] called as CPP scheme. CPP scheme has efficient transmission rate and allows the tracer to identify a traitor with just one invalid ciphertext. Since the original CPP scheme is vulnerable to the multi-key attack, we improved CPP to thwart the attack. However, CPP is vulnerable to a fatal forgery attack. In the forgery attack, two traitors can collude to forge all valid decryption keys. The forged keys appear as perfect genuine keys, can decrypt all protected content, but are untraceable by the tracer. Fortunately, we can patch this weakness with increasing the decoder storage.

Discipline

Information Security

Research Areas

Information Security and Trust

Publication

Information Security and Privacy: 12th Australasian Conference, ACISP 2007, Townsville, Australia, July 2-4: Proceedings

Volume

4586

First Page

171

Last Page

183

ISBN

9783540734581

Identifier

10.1007/978-3-540-73458-1_14

Publisher

Springer Verlag

City or Country

Townsville, Australia

Additional URL

http://dx.doi.org/10.1007/978-3-540-73458-1_14