Quantum computer ‘threat’ to crypto is exaggerated — for now

Researchers at Shanghai University reported in a peer-reviewed paper, as covered by the South China Morning Post on Oct. 11, that a D-Wave quantum computer could breach multiple full-scale SPN-structured encryption algorithms, but experts quoted by Cointelegraph say the threat to crypto is exaggerated for now. Massimiliano Sala of the University of Trento said the paper lacks details and that its significance depends on whether RSA keys of bank-used sizes were broken, adding "There is no evidence of that." Takaya Miyano of Ritsumeikan University noted the factored integer was 22 bits, far shorter than the usual 1,024 bits or more for real RSA keys.