Asymmetric Public-key Traitor Tracing Based on Bilinear Map
Wenfeng Yang · Jisuanji gongcheng · 2009
An asymmetric public-key traitor tracing scheme is proposed based on the bilinear map on elliptic curves. By using the Lagrange interpolation,one-key based one-encryption and multi-key decryption come true. Combining the bilinear property of Weil pairing,given a specially designed input,the pirate decoder outputs the register record of the traitor,via which the new scheme realizes black-box tracing. In addition,this novel work contains other desirable features,such as asymmetry,non-repudiation,revocation property and full frame-proof. The security of the scheme depends on the difficulty of Bilinear Decision Diffie-Hellman(BDDH) problem on elliptic curves.