A provably secure oblivious transfer protocol
Proc. of the EUROCRYPT 84 workshop on Advances in cryptology: theory and application of cryptographic techniques
Fingerprinting long forgiving messages
Lecture notes in computer sciences; 218 on Advances in cryptology---CRYPTO 85
Untraceable off-line cash in wallet with observers
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Asymmetric fingerprinting for larger collusions
Proceedings of the 4th ACM conference on Computer and communications security
Protocols for Collusion-Secure Asymmetric Fingerprinting (Extended Abstract)
STACS '97 Proceedings of the 14th Annual Symposium on Theoretical Aspects of Computer Science
Efficient Smart-Card Based Anonymous Fingerprinting
CARDIS '98 Proceedings of the The International Conference on Smart Card Research and Applications
CRYPTO '94 Proceedings of the 14th Annual International Cryptology Conference on Advances in Cryptology
Committed Oblivious Transfer and Private Multi-Party Computation
CRYPTO '95 Proceedings of the 15th Annual International Cryptology Conference on Advances in Cryptology
Collusion-Secure Fingerprinting for Digital Data (Extended Abstract)
CRYPTO '95 Proceedings of the 15th Annual International Cryptology Conference on Advances in Cryptology
Efficient Anonymous Fingerprinting with Group Signatures
ASIACRYPT '00 Proceedings of the 6th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Anonymous Fingerprinting with Direct Non-repudiation
ASIACRYPT '00 Proceedings of the 6th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Anonymous Fingerprinting Based on Committed Oblivious Transfer
PKC '99 Proceedings of the Second International Workshop on Practice and Theory in Public Key Cryptography
Tamper resistance: a cautionary note
WOEC'96 Proceedings of the 2nd conference on Proceedings of the Second USENIX Workshop on Electronic Commerce - Volume 2
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
An improved protocol for demonstrating possession of discrete logarithms and some generalizations
EUROCRYPT'87 Proceedings of the 6th annual international conference on Theory and application of cryptographic techniques
Coin-based anonymous fingerprinting
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
Anonymous Fingerprinting as Secure as the Bilinear Diffie-Hellman Assumption
ICICS '02 Proceedings of the 4th International Conference on Information and Communications Security
IH'04 Proceedings of the 6th international conference on Information Hiding
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Fingerprinting schemes are techniques applied to protect the copyright on digital goods. They enable the merchants to identify the source of illegal redistribution. Anonymous fingerprinting schemes allow the buyers to purchase fingerprinted digital goods anonymously. However, on illegal redistribution the anonymity can be revoked.In this paper we show serious shortcomings of two recent proposals on anonymous fingerprinting schemes. These schemes offer buyers only a weak form of anonymity and allow the merchants to cheat honest buyers. We clarify the notations of anonymity and fingerprinting and make several constructive proposals to repair some of the flaws.