- Quantum computing threatens current encryption systems, putting the security of critical data at risk.
- The use of post-quantum algorithms is essential to ensure protection against quantum computers.
- Telefónica has developed Quantum-Safe Networks, a solution that strengthens security in 5G networks, IoT and critical systems.
- Use cases include IoT device protection, private 5G networks, and smart meters.
Quantum computing is poised to revolutionize digital security and poses an unprecedented challenge to current encryption systems. While this technology brings significant advancements across various sectors, it also introduces substantial risks to privacy and data integrity. In this context, the concept of Quantum-Safe emerges as a key solution for preventing attacks in a future dominated by quantum computers.
Many organizations are investing in developing strategies to mitigate these risks . Telefónica, for example, has launched its Quantum-Safe Networks initiative , a set of solutions designed to strengthen digital security by implementing encryption resistant to quantum computing.
Quantum computing: the new challenge in cybersecurity
Current cryptographic algorithms, such as RSA and ECC, have been the foundation of internet security for decades. However, quantum computers will be able to break them , jeopardizing the confidentiality of communications and stored data.
One of the most worrying threats is the one known as Store Now, Decrypt Later (SNDL) , in which cybercriminals intercept and store encrypted data with the intention of decrypting it when quantum computing is advanced enough.
Post-quantum solutions in development
Given this scenario, several strategies have been developed to mitigate the risks . Among them, the following stand out:
- Using post-quantum algorithms: Cryptographic methods designed to resist attacks by quantum computers.
- Quantum Key Distribution (QKD): Technology that uses the properties of quantum mechanics to distribute encryption keys in an inviolable way.
- Reduction of data validity: Minimize the time during which sensitive information is exploitable.
The National Institute of Standards and Technology (NIST) has been leading the selection of post-quantum algorithms since 2016, and in 2024 it published the first official standards.
Quantum-Safe Networks: Telefónica's bet
Telefónica has presented Quantum-Safe Networks , a comprehensive solution that seeks to protect current and future networks by applying post-quantum encryption.
Among its applications, three key use cases stand out:
Secure 5G networks: remote control of critical devices
In collaboration with Subsea Mechatronics, Telefónica has demonstrated that its technology enables the secure remote control of a remotely operated vehicle (ROV) via private 5G networks protected with post-quantum encryption. This system guarantees secure communications and the low latency necessary for operating in critical environments such as underwater exploration.
Protection of public networks and smart meters
Another key use case is the protection of IoT devices , such as smart water, gas, and electricity meters. Together with Idemia, Telefónica has integrated post-quantum cryptography into the eSIMs of these devices, ensuring that the transmitted data is tamper-proof.
In addition, the system incorporates the Crypto Agility functionality , which allows for remote updates to security protocols based on new vulnerabilities.
Extra layer of security for IoT devices
Quantum-Safe technology has also been applied to IoT devices in critical sectors , such as mining, industry, and healthcare. Telefónica has demonstrated how Halotech's Halo I smart helmets and Halo III armbands can benefit from post-quantum encryption to protect the transmission of sensitive information.
This implementation ensures that worker data in these sectors is secure and cannot be manipulated by malicious actors.
The advancement of quantum computing represents a radical shift in digital security, and the adoption of technologies like Quantum-Safe Networks is fundamental to maintaining data integrity in the coming years. Companies like Telefónica are already working on implementing post-quantum encryption solutions to anticipate future threats and ensure secure networks in the face of new technological challenges.
