搜索结果: 1-13 共查到“军事学 payments”相关记录13条 . 查询时间(0.25 秒)
Privacy-preserving auditable token payments in a permissioned blockchain system
cryptographic protocols AML
font style='font-size:12px;'>
2019/9/19
Token management systems were the first application of blockchain technology and are still the most widely used one. Early implementations such as Bitcoin or Ethereum provide virtually no privacy beyo...
Security Reductions for White-Box Key-Storage in Mobile Payments
White-box cryptography secure key storage hardware-binding
font style='font-size:12px;'>
2019/9/16
The goal of white-box cryptography is to provide security even when the cryptographic implementation is executed in adversarially controlled environments. White-box implementations nowadays appear in ...
WI Is Not Enough: Zero-Knowledge Contingent (Service) Payments Revisited
ZK contingent payments Bitcoin zkSNARKs
font style='font-size:12px;'>
2019/8/27
While fair exchange of goods is known to be impossible without assuming a trusted party, smart contracts in cryptocurrencies forgo such parties by assuming trust in the currency system. They allow a s...
P6V2G: A Privacy-Preserving V2G Scheme for Two-Way Payments and Reputation
Vehicle-to-grid Location Privacy Provable Security
font style='font-size:12px;'>
2019/7/15
The number of electric vehicles (EVs) is steadily growing. This provides a promising opportunity for balancing the smart grid of the future, because vehicle-to-grid (V2G) systems can utilize the batte...
Omniring: Scaling Up Private Payments Without Trusted Setup - Formal Foundations and Constructions of Ring Confidential Transactions with Log-size Proofs
Ring Confidential Transactions Log-size Proofs
font style='font-size:12px;'>
2019/5/31
Monero is the largest cryptocurrency with built-in cryptographic privacy features. The transactions are authenticated using spend proofs, which provide a certain level of anonymity by hiding the sourc...
Contingent payments on a public ledger: models and reductions for automated verification
fair exchange security models blockchain
font style='font-size:12px;'>
2019/5/9
We study protocols that rely on a public ledger infrastructure, concentrating on protocols for zero-knowledge contingent payment, whose security properties combine diverse notions of fairness and priv...
Another Look at Relay and Distance-based Attacks in Contactless Payments
Contactless Payments EMV-adaptations
font style='font-size:12px;'>
2018/5/3
Relay attacks on contactless e-payments were demonstrated in 2015. Since, countermeasures have been proposed and Mastercard has recently adopted a variant of these in their specifications. These relay...
Zero-Knowledge Contingent Payments Revisited: Attacks and Payments for Services
fair exchange Bitcoin zero knowledge
font style='font-size:12px;'>
2017/6/15
Zero Knowledge Contingent Payment (ZKCP) protocols allow fair exchange of sold goods and payments over the Bitcoin network. In this paper we point out two main shortcomings of current proposals for ZK...
TumbleBit: An Untrusted Tumbler for Bitcoin-Compatible Anonymous Payments
bitcoin anonymity fair exchange
font style='font-size:12px;'>
2016/6/6
This paper presents TumbleBit, a new anonymous payments scheme that is fully compatible with today's Bitcoin protocol. TumbleBit allows parties to make payments through an untrusted Tumbler. No-one, n...
Efficient Zero-Knowledge Contingent Payments in Cryptocurrencies Without Scripts
bitcoin smart contracts cryptocurrencies
font style='font-size:12px;'>
2016/5/11
One of the most promising innovations offered by the cryptographic currencies (like Bitcoin) are the so-called \emph{smart contracts}, which can be viewed as financial agreements between mutually dist...
Accountable Privacy for Decentralized Anonymous Payments
construct payment systems new regulatory concerns
font style='font-size:12px;'>
2016/1/27
Decentralized ledger-based currencies such as Bitcoin provide
a means to construct payment systems without requiring a trusted bank.
Removing this trust assumption comes at the significant cost of t...
Zerocash: Decentralized Anonymous Payments from Bitcoin
Bitcoin decentralized electronic cash zero-knowledge proofs
font style='font-size:12px;'>
2016/1/9
Bitcoin is the first digital currency to see widespread adoption. Although payments are
conducted between pseudonyms, Bitcoin cannot offer strong privacy guarantees: payment
transactions are recorde...
Microcash: Efficient Off-Line Small Payments
cryptographic protocols Cryptocurrency
font style='font-size:12px;'>
2015/12/29
An off-line electronic cash scheme is proposed that is suitable for
small payments. The approach is innovative, in that each coin may be
efficiently verified by the same or different merchants durin...