Post-Quantum Blockchain: A review on blockchain cryptography resistant to Quantum Computing attacks - IEEE

Beware!

All the businesses, including #startups, should be aware that existing passwords and asymmetric cryptography may become useless within next 5 years due to advancement of quantum computing technology, which can be used by hackers to crack passwords / keys within minutes, if not in seconds.

Even present blockchain technology may be susceptible to hacker attacks due to faster quantum computing technologies. Do you know that a Bitcoin private key is a 256-bit number? Can you imagine if the above 256-bit (64 letter hexa decimal - 0-9, A-F alpha numeric) key can be hacked using quantum computing methods, then what happens to our 6-12 letter alpha numeric passwords!

So, all the authentication systems may have to be migrated to quantum blockchain technology, which in simple term uses variable key lengths and two streams of communication to send and receive passwords, one through normal network and another through quantum network using either optical fibre cables or through low lying artificial satellites above the earth.

Read about Quantum Key Distribution at  https://en.wikipedia.org

Read more about quantum blockchain technology at

Towards Post-Quantum Blockchain: A Review on Blockchain Cryptography Resistant to Quantum Computing Attacks - IEEE Journals & Magazine

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