Anonymous Digital Fingerprint Scheme Based on Ring Signature
Yupu Hu · Jisuanji gongcheng · 2007
Analyses are made on the security threats of present digital fingerprinting schemes,and an asymmetric digital fingerprinting scheme with conditional anonymity based on ring signature is presented.The identity blinding process enables buyers to be conditionally anonymous,and the anonymity can also be revoked if necessary.The probabilistic encryption algorithm in the scheme avoids the relevance between different digital fingerprints generated by the same buyer.The independence of fingerprint security on the hypothesis of an absolutely trustable third party in the scheme prevents coalition attack and generalized fingerprint forgery.