Cambridge University Computing and Technology Society
event / 66
Tue 08 Nov 2016, 7:30pm  |  pin Meeting Room 3, CMS (Centre for Mathematical Sciences, Wilberforce Road)
Dr Nicolas Courtois (University College London) speaks on
In this presentation we will overview a number of important questions which underpin the security of blockchains. We study Chaumian and Nakamoto e-cash, see why bitcoin is quite slow, explain the role of digital signatures and mining in building so called "trustless systems", study the bitcoin network and 51% attacks, explain some issues with ECC cryptography. Then we study some techniques which allow to make bitcoin payments more secure (e.g. hardware wallets) and more private (stealth address, ring signatures).


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