Fujitsu: Quantum computers no threat to encryption just yet

Research conducted by Fujitsu suggests there is no need to panic about quantum computers being able to decode encrypted data – this is unlikely to happen in the near future, it claims.

Fujitsu said it ran trials using its 39-qubit quantum simulator hardware to assess how difficult it would be for quantum computers to crack data encrypted with the RSA cipher, using a Shor's algorithm approach. Researchers estimated it would require a fault-tolerant quantum computer with approximately 10,000 qubits and 2.23 trillion quantum gates in order to crack RSA, an achievement that the quantum industry is a long way from reaching. IBM'sFujitsu said its researchers also estimate that it would be necessary for such a fault-tolerant quantum computer to work on the problem for about 104 days to successfully crack RSA.

However, before anyone gets too complacent, it should be noted IBM's Osprey has three times the number of qubits that featured in its Eagle processor from the previous year, and the company isto have a 4,158-qubit system by 2025. If it continues to advance at this pace, it may well surpass 10,000 qubits before the end of this decade.

And we'd bet our bottom dollar intelligence agencies, such as America's NSA, are or will be all over quantum in case the tech manages to crack encryption.

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