How to prove yourself: practical solutions to identification and signature problems
Proceedings on Advances in cryptology---CRYPTO '86
A digital signature scheme secure against adaptive chosen-message attacks
SIAM Journal on Computing - Special issue on cryptography
Zero-knowledge undeniable signatures (extended abstract)
EUROCRYPT '90 Proceedings of the workshop on the theory and application of cryptographic techniques on Advances in cryptology
On blind signatures and perfect crimes
Computers and Security
Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
An efficient fair payment system
CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
A restrictive blind signature scheme with applications to electronic cash
Proceedings of the IFIP TC6/TC11 international conference on Communications and multimedia security II
Crowds: anonymity for Web transactions
ACM Transactions on Information and System Security (TISSEC)
Proceedings of the eighteenth annual ACM symposium on Principles of distributed computing
Trustee-based tracing extensions to anonymous cash and the making of anonymous change
Proceedings of the sixth annual ACM-SIAM symposium on Discrete algorithms
Untraceable electronic mail, return addresses, and digital pseudonyms
Communications of the ACM
SAC '98 Proceedings of the Selected Areas in Cryptography
CRYPTO '88 Proceedings of the 8th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Cryptographically Strong Undeniable Signatures, Unconditionally Secure for the Signer
CRYPTO '91 Proceedings of the 11th Annual International Cryptology Conference on Advances in Cryptology
Provably Secure and Practical Identification Schemes and Corresponding Signature Schemes
CRYPTO '92 Proceedings of the 12th Annual International Cryptology Conference on Advances in Cryptology
Security of Blind Digital Signatures (Extended Abstract)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Relations Among Notions of Security for Public-Key Encryption Schemes
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
Mix-Networks on Permutation Networks
ASIACRYPT '99 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Proceedings of the International Workshop on Security Protocols
Efficient Electronic Cash with Restricted Privacy
FC '97 Proceedings of the First International Conference on Financial Cryptography
Efficient Oblivious Proofs of Correct Exponentiation
CMS '99 Proceedings of the IFIP TC6/TC11 Joint Working Conference on Secure Information Networks: Communications and Multimedia Security
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Improved Magic Ink Signatures Using Hints
FC '99 Proceedings of the Third International Conference on Financial Cryptography
An Efficient Off-line Electronic Cash System Based On The Representation Problem.
An Efficient Off-line Electronic Cash System Based On The Representation Problem.
Restrictive blinding of secret-key certificates
Restrictive blinding of secret-key certificates
Designated verifier proofs and their applications
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
Security proofs for signature schemes
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
Distributed "magic ink" signatures
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
EUROCRYPT'95 Proceedings of the 14th annual international conference on Theory and application of cryptographic techniques
Practical multi-candidate election system
Proceedings of the twentieth annual ACM symposium on Principles of distributed computing
The Gap-Problems: A New Class of Problems for the Security of Cryptographic Schemes
PKC '01 Proceedings of the 4th International Workshop on Practice and Theory in Public Key Cryptography: Public Key Cryptography
Fair electronic cash based on double signatures
Journal of Computer Science and Technology
A flexible payment scheme and its permission-role assignment
ACSC '03 Proceedings of the 26th Australasian computer science conference - Volume 16
A Flexible Payment Scheme and Its Role-Based Access Control
IEEE Transactions on Knowledge and Data Engineering
Information Sciences: an International Journal
Receipt-free electronic voting scheme with a tamper-resistant randomizer
ICISC'02 Proceedings of the 5th international conference on Information security and cryptology
A generic construction for universally-convertible undeniable signatures
CANS'07 Proceedings of the 6th international conference on Cryptology and network security
Provably secure convertible undeniable signatures with unambiguity
SCN'10 Proceedings of the 7th international conference on Security and cryptography for networks
A framework for constructing convertible undeniable signatures
ProvSec'10 Proceedings of the 4th international conference on Provable security
New approach for selectively convertible undeniable signature schemes
ASIACRYPT'06 Proceedings of the 12th international conference on Theory and Application of Cryptology and Information Security
Time-selective convertible undeniable signatures
CT-RSA'05 Proceedings of the 2005 international conference on Topics in Cryptology
3-Move undeniable signature scheme
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Efficient cryptographic protocols realizing e-markets with price discrimination
FC'06 Proceedings of the 10th international conference on Financial Cryptography and Data Security
Certificateless undeniable signatures from bilinear maps
Information Sciences: an International Journal
Auditable envelopes: tracking anonymity revocation using trusted computing
TRUST'12 Proceedings of the 5th international conference on Trust and Trustworthy Computing
Authorization architectures for privacy-respecting surveillance
EuroPKI'07 Proceedings of the 4th European conference on Public Key Infrastructure: theory and practice
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For the two last decades, people have tried to provide practical electronic cash schemes, with more or less success. Indeed, the most secure ones generally suffer from inefficiency, largely due to the use of restrictive blind signatures, on the other hand efficient schemes often suffer from serious security drawbacks. In this paper, we propose both a new tool providing scalable anonymity at a low cost, and a new Internet business: "Anonymity Providers".Those "Anonymity Providers" certify re-encrypted data after having been convinced of the validity of the content, but without knowing anything about this latter. It is a very useful third party in many applications (e.g. for revocable anonymous electronic cash, where a coin would be a certified encryption of the user's identity, such that a Revocation Center, and only it, can recover this identity, if needed).With this new tool, each user can get the required anonymity level. depending on the available time, computation and/or money amounts. Furthermore, the "Anonymity Provider" may be a new type of business over the Internet, profitable for everybody: - from the provider point of view as he can charge the service; - from the user point of view as he can obtain a high level of anonymity at low computational cost. Moreover, a user who does not require anonymity has no extra computation to perform.This technique is quite efficient because of its "optimistic" orientation: in case of honest use, everything is very efficient. Some slightly more heavy processes have to be performed in case of fraud detection, but with overwhelming tracing success.