Constant-Deposit Multiparty Lotteries on Bitcoin
نویسندگان
چکیده
An active research trend is to exploit the consensus mechanism of cryptocurrencies to secure the execution of distributed applications. In particular, some recent works have proposed fair lotteries which work on Bitcoin. These protocols, however, require a deposit from each player which grows quadratically with the number of players. We propose a fair lottery on Bitcoin which only requires a constant deposit.
منابع مشابه
Fair Two-Party Computations via Bitcoin Deposits
We show how the Bitcoin currency system (with a small modification) can be used to obtain fairness in any two-party secure computation protocol in the following sense: if one party aborts the protocol after learning the output then the other party gets a financial compensation (in bitcoins). One possible application of such protocols is the fair contract signing: each party is forced to complet...
متن کاملHow to Use Bitcoin to Design Fair Protocols
We study a model of fairness in secure computation in which an adversarial party that aborts on receiving output is forced to pay a mutually predefined monetary penalty. We then show how the Bitcoin network can be used to achieve the above notion of fairness in the two-party as well as the multiparty setting (with a dishonest majority). In particular, we propose new ideal functionalities and pr...
متن کاملA Denial of Service Attack against Fair Computations using Bitcoin Deposits
Bitcoin supports complex transactions where the recipient of a transaction can be programmatically determined. Using these transactions, multiparty computation protocols that aim to ensure fairness among participants have been designed. We present a Denial of Service attack against these protocols that results in a net loss for some or all of the honest parties involved, violating those fairnes...
متن کاملHow to deal with malleability of BitCoin transactions
BitCoin transactions are malleable in a sense that given a transaction an adversary can easily construct an equivalent transaction which has a different hash. This can pose a serious problem in some BitCoin distributed contracts in which changing a transaction’s hash may result in the protocol disruption and a financial loss. The problem mostly concerns protocols, which use a ”refund” transacti...
متن کاملRDV: Register, Deposit, Vote: a full decentralized consensus algorithm for blockchain based networks
A decentralized payment system is not secure if transactions are transferred directly between clients. In such a situation it is not possible to prevent a client from redeeming some coins twice in separate transactions that means a double-spending attack. Bitcoin uses a simple method to preventing this attack i.e. all transactions are published in a unique log (blockchain) [17,38]. This approac...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016