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Fair Client Puzzles from the Bitcoin Blockchain
Bitcoin Client Puzzles Denial of Service Resistance
2016/7/7
Client puzzles have been proposed as a mechanism for proving legitimate intentions by providing ``proofs of work'', which can be applied to discourage malicious usage of resources. A typical problem o...
Stronger difficulty notions for client puzzles and denial-of-service-resistant protocols
client puzzles proof of work denial of service resistance protocols
2010/12/22
Client puzzles are meant to act as a defense against denial of service (DoS) attacks by requiring a client to solve some moderately hard problem before being granted access to a resource. However, rec...
Efficient Client Puzzles based on Repeated-Squaring
Efficient Client Puzzles Repeated-Squaring
2009/12/29
In this paper, we propose a new, nonparallelizable
verification-efficient client puzzle. Our
puzzle is based on repeated-squaring and enables efficient
verification of the puzzle solution that is r...
Security Notions and Generic Constructions for Client Puzzles
Security Notions Generic Constructions Client Puzzles
2009/7/14
Computational puzzles are mildly difficult computational problems that require resources (processor
cycles, memory, or both) to solve. Puzzles have found a variety of uses in security. In this paper ...