ACM 61(7): 95-102 (2018).Īrthur Gervais, Hubert Ritzdorf, GhassanKarame, SrdjanCapkun: Tampering with the Delivery of Blocks and Transactions in Bitcoin.

Ittay Eyal, Emin Gün Sirer, Majority is not enough: bitcoin mining is vulnerable. Martijn Bastiaan, Preventing the 51%-Attack: a Stochastic Analysis of Two Phase Proof of Work in Bitcoin (2015). Iuon-Chang Lin, Tzu-Chun Liao, A Survey of Blockchain Security Issues and Challenges. Meni Rosenfeld, Analysis of Hashrate-Based Double Spending. IACR Cryptology ePrint Archive 2012: 248 (2012) Ghassan Karame, Elli Androulaki, Srdjan Capkun, Two Bitcoins at the Price of One? Double-Spending Attacks on Fast Payments in Bitcoin. īitcoin 51% attack,, accessed on June 6th, 2018

SEC 2: Recommended Elliptic Curve Domain Parameters. Accessed on December 26th, 2017.Ĭerticom Research. This approach would deny to any super-pool the ability to monopolize the mining process if it is implemented in the Bitcoin system.Ĭopyright © 2018 Praise Worthy Prize - All rights reserved.Ĭoin market capitalization. This paper suggests a way to prevent this issue using the randomized solution of the dining philosophers’ problem. Despite the embedded security features, Bitcoin is still vulnerable to the majority attack, in which a mining pool gaining most of the network hashing rate could temper with the Blockchain. This security is built over many features for different assets, such as the hashing functions for addresses, the elliptic curve digital signature (ECDSA) for transactions, the elliptic curve discreet logarithm for private keys generation, the difficulty for the block mining process, and the proof-of-work as a required condition to add new blocks to the Blockchain. This success is due, to some extent, to its security. Despite some unexpected fluctuations in its value, Bitcoin continues to be the most used and spread crypto-currency in the world. Bitcoin has been burgeoning since its inception and has become the most successful currency in the crypto-currency market.

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