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Wednesday, December 23, 2020

Chinese Quantum Computing

Quantum computing is expected to be able to be able to 'break' some forms of encryption,  thus the concerns mentioned.

China joins Google in claiming quantum supremacy with new technology, ratcheting up RSA decryption concerns.

China’s top quantum-computer researchers have reported that they have achieved quantum supremacy, i.e., the ability to perform tasks a traditional supercomputer cannot. And while it’s a thrilling development, the inevitable rise of quantum computing means security teams are one step closer to facing a threat more formidable than anything before.

Researchers from the University of Science and Technology of China explained in the journal Science they were able to get a system they named Jiuzhang to perform a calculation in minutes that would have taken a traditional supercomputer an estimated 10,000 years to solve.

The team joins Google, which claimed it achieved quantum supremacy in Oct. 2019 using a “supercold, superconducting metal,” according to WIRED. IBM has also entered the quantum computing fray, while leveling criticism against Google’s claims of supremacy.

Now, the Chinese researchers have claimed quantum supremacy using a quantum computation called Gaussian boson sampling (GBS), their paper explained, which uses particles of light sent through an optical circuit, measuring the output. This means there are now multiple proven quantum-computing technologies, with surely more to come.

The security concern is that quantum computers will be able to crack RSA public key cryptography, used to protect data in transit. That means security teams will have to pivot to new post-quantum cryptography solutions. A conservative estimate from a 2019 DigiCert report said teams will need to have protections from quantum computing breaches in place by 2022.   ... " 

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