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On the Difficulty of Hiding the Balance of Lightning Network Channels
Bitcoin Blockchain Network Security
2019/4/1
The Lightning Network is a second layer technology running on top of Bitcoin and other Blockchains. It is composed of a peer-to-peer network, used to transfer raw information data. Some of the links i...
Revisiting Difficulty Control for Blockchain Systems
proof-of-work blockchain difficulty adjustment
2017/8/2
The Bitcoin whitepaper states that security of the system is guaranteed as long as honest miners control more than half of the current total computational power. The whitepaper assumes a static diffic...
Bitcoin’s innovative and distributedly maintained blockchain data structure hinges on the adequate degree of difficulty of so-called “proofs of work,” which miners have to produce in order for transac...
On the Difficulty of Securing Web Applications using CryptDB
CryptDB database integrity query integrity
2016/1/4
CryptDB has been proposed as a practical and secure middleware to protect databases deployed on semi-honest cloud servers. While CryptDB provides sufficient protection under Threat-1, here we demonstr...
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...
Game Theoretic Resistance to Denial of Service Attacks Using Hidden Difficulty Puzzles
Denial of Service (DoS) Attack Proof-of-Work Nash Equilibrium
2009/7/22
Denial of Service (DoS) vulnerabilities are one of the major
concerns in today's Internet. Client-puzzles o er a good mechanism to
defend servers against DoS attacks. In this paper, we introduce the...