China activates quantum weapon, raising concerns about Bitcoin and digital security

China advances quantum computing, putting encryption at risk

Quantum computing and digital security

Digital security has long relied on cryptographic algorithms considered nearly impossible to crack with traditional computers. However, a recent breakthrough in quantum computing by Chinese researchers may change this reality. Scientists successfully broke a 90-bit RSA key using a commercial quantum computer, reigniting discussions about the risks qubits pose to the digital world.

How quantum computing threatens encryption

The experiment was led by Professor Wang Chao from Shanghai University and published in the Chinese Journal of Computers. The team used a D-Wave Advantage quantum computer with 5,760 qubits and applied a technique called quantum annealing, which leverages quantum physics principles like superposition and entanglement to solve highly complex calculations in record time.

This achievement marks a turning point in the processing power quantum computing can offer. While the experiment only cracked a 90-bit RSA key, experts warn that as technology advances, more robust systems could be compromised in the future.

Bitcoin remains secure for now, but for how long?

Bitcoin does not use the RSA system but instead relies on ECDSA (Elliptic Curve Digital Signature Algorithm), an encryption method based on elliptic curves. However, the success of Chinese researchers in breaking an RSA key raises concerns: if a commercial quantum computer can already compromise a widely used security technology, it may only be a matter of time before other encryption methods, including Bitcoin’s, become vulnerable.

More concerning is that the D-Wave Advantage is not a classified military device—it is available to research centers and companies. This means that advancements in computational power are not restricted to governments, making the race for digital security even more urgent.

A race against time

Although Bitcoin remains protected for now, quantum technology is evolving rapidly. The Chinese experiment suggests that the era of absolute security may be coming to an end. Banking systems, encrypted networks, and digital wallets must adapt before it is too late.

In summary, the threat is not an immediate attack but rather a ticking clock. Strengthening cryptographic security is now an urgent priority—before qubits transition from theoretical possibility to real vulnerability.

Conclusion

China’s advancements in quantum computing mark a milestone in technological evolution but also serve as a warning for the future of digital security. While Bitcoin and other cryptocurrencies remain protected for now, experts recommend upgrading encryption systems to prevent future vulnerabilities.

Source: Cointribune

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Photo by Cristiano Firmani on Unsplash