Optimistic protocols for fair exchange
Proceedings of the 4th ACM conference on Computer and communications security
Protecting data privacy in private information retrieval schemes
STOC '98 Proceedings of the thirtieth annual ACM symposium on Theory of computing
Composition and integrity preservation of secure reactive systems
Proceedings of the 7th ACM conference on Computer and communications security
Wallet Databases with Observers
CRYPTO '92 Proceedings of the 12th Annual International Cryptology Conference on Advances in Cryptology
Efficient Group Signature Schemes for Large Groups (Extended Abstract)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Priced Oblivious Transfer: How to Sell Digital Goods
EUROCRYPT '01 Proceedings of the International Conference on the Theory and Application of Cryptographic Techniques: Advances in Cryptology
Practical Oblivious Transfer Protocols
IH '02 Revised Papers from the 5th International Workshop on Information Hiding
On Defining Proofs of Knowledge
CRYPTO '92 Proceedings of the 12th Annual International Cryptology Conference on Advances in Cryptology
Universally Composable Security: A New Paradigm for Cryptographic Protocols
FOCS '01 Proceedings of the 42nd IEEE symposium on Foundations of Computer Science
A Model for Asynchronous Reactive Systems and its Application to Secure Message Transmission
SP '01 Proceedings of the 2001 IEEE Symposium on Security and Privacy
Simulatable Adaptive Oblivious Transfer
EUROCRYPT '07 Proceedings of the 26th annual international conference on Advances in Cryptology
Efficient Protocols for Set Membership and Range Proofs
ASIACRYPT '08 Proceedings of the 14th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Controlling Access to an Oblivious Database Using Stateful Anonymous Credentials
Irvine Proceedings of the 12th International Conference on Practice and Theory in Public Key Cryptography: PKC '09
On the Portability of Generalized Schnorr Proofs
EUROCRYPT '09 Proceedings of the 28th Annual International Conference on Advances in Cryptology: the Theory and Applications of Cryptographic Techniques
Universally Composable Adaptive Priced Oblivious Transfer
Pairing '09 Proceedings of the 3rd International Conference Palo Alto on Pairing-Based Cryptography
Oblivious transfer with access control
Proceedings of the 16th ACM conference on Computer and communications security
Rapid demonstration of linear relations connected by boolean operators
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Proving in zero-knowledge that a number is the product of two safe primes
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
A verifiable random function with short proofs and keys
PKC'05 Proceedings of the 8th international conference on Theory and Practice in Public Key Cryptography
SCN'06 Proceedings of the 5th international conference on Security and Cryptography for Networks
Optimistic fair exchange of digital signatures
IEEE Journal on Selected Areas in Communications
Access controls for oblivious and anonymous systems
ACM Transactions on Information and System Security (TISSEC)
Practical PIR for electronic commerce
Proceedings of the 18th ACM conference on Computer and communications security
Efficient oblivious transfers with access control
Computers & Mathematics with Applications
Efficient schemes for anonymous yet authorized and bounded use of cloud resources
SAC'11 Proceedings of the 18th international conference on Selected Areas in Cryptography
Computer Networks: The International Journal of Computer and Telecommunications Networking
Oblivious transfer with hidden access control from attribute-based encryption
SCN'12 Proceedings of the 8th international conference on Security and Cryptography for Networks
Outsourced private information retrieval
Proceedings of the 12th ACM workshop on Workshop on privacy in the electronic society
Design and implementation of privacy preserving billing protocol for smart grid
The Journal of Supercomputing
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We present the first truly unlinkable priced oblivious transfer protocol. Our protocol allows customers to buy database records while remaining fully anonymous, i.e., (1) the database does not learn who purchases a record, and cannot link purchases by the same customer; (2) the database does not learn which record is being purchased, nor the price of the record that is being purchased; (3) the customer can only obtain a single record per purchase, and cannot spend more than his account balance; (4) the database does not learn the customer’s remaining balance. In our protocol customers keep track of their own balances, rather than leaving this to the database as done in previous protocols. Our priced oblivious transfer protocol is also the first to allow customers to (anonymously) recharge their balances. Finally, we prove our protocol secure in the standard model (i.e., without random oracles).