Anonymous one-time signatures and flexible untraceable electronic cash
AUSCRYPT '90 Proceedings of the international conference on cryptology on Advances in cryptology
Extensions of single-term coins
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Untraceable off-line cash in wallet with observers
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
Revokable and versatile electronic money (extended abstract)
CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
Improved Digital Signature Suitable for Batch Verification
IEEE Transactions on Computers
Secure and Efficient Off-Line Digital Money (Extended Abstract)
ICALP '93 Proceedings of the 20th International Colloquium on Automata, Languages and Programming
The ESPRIT Project CAFE - High Security Digital Payment Systems
ESORICS '94 Proceedings of the Third European Symposium on Research in Computer Security
Digital Payment Systems with Passive Anonymity-Revoking Trustees
ESORICS '96 Proceedings of the 4th European Symposium on Research in Computer Security: Computer Security
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
Efficient Identification and Signatures for Smart Cards
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '91 Proceedings of the 11th Annual International Cryptology Conference on Advances in Cryptology
An Efficient Divisible Electronic Cash Scheme
CRYPTO '95 Proceedings of the 15th Annual International Cryptology Conference on Advances in Cryptology
"Indirect Discourse Proof": Achieving Efficient Fair Off-Line E-cash
ASIACRYPT '96 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
FC '98 Proceedings of the Second International Conference on Financial Cryptography
Security proofs for signature schemes
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
A Provably Secure Restrictive Partially Blind Signature Scheme
PKC '02 Proceedings of the 5th International Workshop on Practice and Theory in Public Key Cryptosystems: Public Key Cryptography
Fair E-Cash: Be Compact, Spend Faster
ISC '09 Proceedings of the 12th International Conference on Information Security
Forgeability of Wang-Tang-Li's ID-based restrictive partially blind signature scheme
Journal of Computer Science and Technology
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All known anonymous electronic cash protocols are inefficient compared to other electronic payment protocols. This is because much of the complexity of the protocols is devoted to ensuring the anonymity of the consumer. This problem is addressed with an extension of Brands' electronic cash payment protocol using batch cryptography. Batch signature generation is used to improve the efficiency of the withdrawal process so that multiple coins can be withdrawn for almost the cost of only one Brands' coin withdrawal. As a consequence coins withdrawn together can be linked. Batch verification is also used to increase the efficiency of payment. We show that the security of the original scheme is maintained and the level of privacy provided by the cash scheme can be determined by the customer.