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DLSAG: Non-Interactive Refund Transactions For Interoperable Payment Channels in Monero
Linkable Ring Signature Payment Channel Blockchain
2019/6/3
Monero has emerged as one of the leading cryptocurrencies with privacy by design. However, this comes at the price of reduced expressiveness and interoperability as well as severe scalability issues. ...
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
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...
How many transactions per second can bitcoin really handle ? Theoretically.
maximal throughput bitcoin protocol blockchain
2019/4/25
Transactions are arguably the most important part in the bitcoin mechanism, with everything else facilitating the proper creation, propagation and validation; culminating with their addition to the pu...
Lelantus: Towards Confidentiality and Anonymity of Blockchain Transactions from Standard Assumptions
Zero-knowledge Proofs Confidential Transactions Zcoin
2019/4/15
We propose Lelantus, a new anonymous payment system which ensures both transaction confidentiality and anonymity with small proof sizes, short verification times and without requiring a trusted setup.
Blockchains have the potential to revolutionize markets and services, yet, currently exhibit high latencies and fail to handle loads comparable to those managed by traditional custodian financial syst...
ZeroCT: Improving ZeroCoin with Confidential Transactions and more
zero knowledge RSA discrete logarithm problem
2019/1/26
The Zerocoin protocol is a set of cryptographic algorithms which embedded in a cryptocurrency provide anonymous swap of tokens in a mathematically provable way by using cryptographic accumulators. Fun...
ZLiTE: Lightweight Clients for Shielded Zcash Transactions using Trusted Execution
Lightweight Clients Trusted Execution
2018/11/2
Cryptocurrencies record transactions between parties in a blockchain maintained by a peer-to-peer network. In most cryptocurrencies, transactions explicitly identify the previous transaction providing...
Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions in Blockchain (Lattice RingCT v1.0)
Linkable Ring Signature Lattice-Based Cryptography Post-Quantum Cryptography
2018/5/2
In this paper, we construct a Lattice-based one-time Linkable Ring Signature (L2RS) scheme, which enables the public to verify if two or more signatures were generated by same signatory, whilst still ...
An Analysis of Acceptance Policies For Blockchain Transactions
Acceptance Policies Blockchain Transactions
2018/1/11
The standard acceptance policy for a cryptocurrency transaction at most exchanges is to wait until the transaction is placed in the blockchain and followed by a certain number of blocks. However, as n...
An Efficient NIZK Scheme for Privacy-Preserving Transactions over Account-Model Blockchain
NIZK Account-Model Blockchain
2017/12/25
We introduce the abstract framework of decentralized smart contracts system with balance and transaction amount hiding property under the ACCOUNT architecture. To build a concrete system with such pro...
We propose a formal model of Bitcoin transactions, which is sufficiently abstract to enable formal reasoning, and at the same time is concrete enough to serve as an alternative documentation to Bitcoi...
Bulletproofs: Efficient Range Proofs for Confidential Transactions
zero knowledge NIZK discrete logarithm problem
2017/11/13
We propose Bulletproofs, a new non-interactive zero-knowledge proof protocol with very short proofs and without a trusted setup; the proof size is only logarithmic in the witness size. Bulletproofs ar...
A Fair Protocol for Data Trading Based on Bitcoin Transactions
electronic commerce and payment fair exchange blockchain
2017/10/25
On-line commercial transactions involve an inherent mistrust between participant parties since, sometimes, no previous relation exists between them. Such mistrust may be a deadlock point in a trade tr...
Double-spending Prevention for Bitcoin zero-confirmation transactions
Bitcoin double-spending
2017/5/11
Zero-confirmation transactions, i.e., transactions that have been broadcast but are still pending to be included in the blockchain, have gained attention in order to enable fast payments in Bitcoin, s...
Solidus: Confidential Distributed Ledger Transactions via PVORM
blockchain confidential transactions
2017/4/17
In this paper we present Solidus, a protocol for confidential transactions on public blockchains, such as those required for asset transfers with on-chain settlement. Solidus operates in a framework b...