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Cryptographers Already Working on Quantum-Resistant Security for Blockchain

By IQT News posted 09 Aug 2019

(DriveInsider) It’s quite possible that by the time quantum computers are manufactured, blockchain technology would have advanced enough that they could counter the new threat according to author Joseph Resher. This is because cryptographers are aware of the theory behind quantum computing and are already working on developing quantum-resistant systems for better security.
To compromise the security of a blockchain, a hacker has to either decrypt the private key or hack at least 50% of the nodes simultaneously. Both of these methods are virtually impossible with existing computers. But, in theory, they are not beyond the scope of a quantum computer which are estimated to be 100 million times faster than the computers of today.

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