France ends the era of classical cryptography: from 2027, only quantum-resistant protection

France is taking a historic step in the evolution of cybersecurity. The National Agency for the Security of Information Systems (ANSSI) has officially announced that, starting in 2027, it will cease certifying any cybersecurity products that do not use encryption resistant to quantum computer attacks. This statement was made by the head of the agency's staff, Samih Souissi, at the France Quantum conference.
ANSSI certification is not just a formality. It is a mandatory requirement for all solutions used in French government institutions and critical infrastructure facilities. Essentially, this means that the market for public procurement and strategically important economic sectors will be completely closed to products using classical encryption algorithms in just three years.
Souissi emphasized that by 2030, companies must switch exclusively to purchasing quantum-resistant products. Behind this decision is not paranoia, but a real threat known as the "harvest now, decrypt later" strategy. Attackers can already intercept and accumulate encrypted data today, waiting for a sufficiently powerful quantum computer capable of breaking current cryptographic standards in minutes.
This move by France sets a new standard for all of Europe. The market for cryptographic hardware and software is facing a tectonic shift. Companies that do not invest in post-quantum cryptography now risk losing not only government contracts but also customer trust in the corporate sector.
Expert opinion: This is not just a regulatory change—it is a signal of the beginning of a new era in data protection. The deadlines set by ANSSI are very tight, given the complexity of integrating quantum-resistant algorithms into existing infrastructure. But there is no alternative: either businesses adapt to the post-quantum reality now, or their data will become easy prey tomorrow. The cryptocurrency and blockchain project market must also take note—classical signature algorithms such as ECDSA may soon come under threat.