04 May How businesses are preparing their networks for quantum computing
Technological evolution is about to cross a frontier that will change the rules of the game in cybersecurity: quantum computing. Although it currently appears to be an experimental technology, its ability to process information at unimaginable speeds poses an existential risk to today’s encryption systems.
For companies handling critical data, the question is not if they should upgrade their networks, but when. Preparing for the quantum era has ceased to be a theoretical forecast and has become a strategic priority in the planning of fibre optic infrastructures.
“Q-Day”: The day current encryption will cease to work
In the tech sector, “Q-Day” is referred to as the moment when quantum computers reach sufficient power to break the asymmetric cryptography algorithms (such as RSA or ECC) that currently protect our communications, banking transactions, and industrial secrets.
Quantum computing does not improve calculation speeds linearly; it uses quantum mechanics to solve problems in minutes that would take a conventional computer thousands of years. This means that any data encrypted today that is intercepted and stored could be decrypted in the future. Therefore, networks must evolve now to ensure the longevity of confidentiality.
Post-quantum cryptography and the leap towards Quantum Safe
To anticipate this threat, businesses are adopting algorithms resistant to quantum attacks, known as post-quantum cryptography (PQC). These protocols are integrated into existing network infrastructures to ensure that information remains shielded, even against the most powerful machines of the future.
In this regard, lyntia has taken a giant leap forward with the launch of Quantum Safe, its new post-quantum encryption option for the Wavelength service. This solution allows companies to:
- Implement encryption with ultra-low latency and no impact on traffic performance.
- Automatically manage keys with customisable rotation frequencies.
- Ensure the protection of sensitive data that must remain confidential for decades.
Quantum Key Distribution (QKD): Physical-level security
Beyond software algorithms, the very nature of fibre optics offers revolutionary solutions such as Quantum Key Distribution (QKD). This technology uses photons (particles of light) to create and transmit security keys.
The advantage of QKD is that, according to the laws of quantum physics, any attempt to intercept or measure these photons alters their state, immediately alerting the connection endpoints and voiding the compromised key. It is, by definition, a security system that is impossible to hack invisibly, taking backbone network protection to an impregnable physical level.
Steps towards adopting crypto-agility
The transition to a network prepared for quantum computing does not happen overnight. Leading companies are implementing what is known as “crypto-agility”:
Infrastructure Audit
The first step is to identify which data and systems are most vulnerable and require priority migration to post-quantum standards.
Implementation of integrated solutions
Instead of adding complex software layers, the trend is to integrate encryption directly into the physical layer (L1) of the network—as seen in lyntia’s Wavelength service—guaranteeing transparency and operational efficiency.
The future of shielded connectivity
The Iberian Peninsula has established itself as a strategic hub for connectivity and data centres in Europe. In this expanding digital ecosystem, security cannot be reactive. Preparing the network for quantum computing is now a key factor in reliability.
At lyntia, we work to ensure that tomorrow’s fibre optic network is secure from today. With solutions like Quantum Safe, we help businesses protect their most critical value—their information—against the challenges of the next technological frontier.