Quantum computers are no longer a distant vision. But are the corresponding cryptosystems even capable of handling these machines? Read this online article to learn how quantum-resistant encryption is already preparing companies for the age of quantum computers.
While quantum computers were still pure theory a few years ago, they are now on the verge of fundamentally revolutionizing the IT world. According to a study by Gartner By 2030, at least 20 percent of companies worldwide are expected to have implemented post-quantum cryptography to protect themselves against the risks of the quantum era. But what does this mean for SMEs in the DACH region, which are increasingly confronted with cyber risks and complex security requirements? The response is clear: It's time to prepare for the coming quantum era.
Quantum computers, whose computing power far exceeds that of current IT systems, could compromise existing encryption methods such as RSA or ECC in a very short time. For companies, this represents a fundamental threat to their sensitive data and systems. Post-quantum cryptography offers a remedy to close these security gaps and secure IT infrastructures in the long term.
The Federal Office for Security in Information Technology writes: "Quantum-resistant cryptography refers to cryptographic methods that are assumed to be unbreakable even with the help of a quantum computer. Unlike quantum cryptography, these methods can be implemented on conventional hardware." Learn more about what exactly this technical term means and why the topic is important for medium-sized companies in this blog post.
The science behind post-quantum cryptography
Quantum-resistant cryptography describes a set of encryption methods that are resilient even to the attack vectors of powerful quantum computers. Unlike traditional methods, it is not based on mathematical challenges such as factoring large numbers or calculating discrete logarithms, which quantum computers could quickly tackle. Instead, post-quantum cryptographic algorithms rely on mathematical problems that even quantum processors cannot efficiently solve, such as lattice problems or isogenetic elliptic curves.
Research in this field has already developed promising standards. The National Institute of Standards and Technology (NIST) in the USA is currently organizing a selection round for the standardization of post-quantum algorithms. Among the most promising proposals are methods such as CRYSTALS-Kyber and Dilithium. While this all sounds technically complex, it actually means only one thing for SMEs in German-speaking countries: We are making decisive progress toward future-proofing our collective cybersecurity and developing guidelines on the basis of which IT providers can provide robust systems.
IT security under pressure: quantum computers and cryptography
Quantum computers work differently than the computers we use today: Instead of encoding data only as 0 or 1 (binary values), they work with so-called qubits. These can assume multiple state combinations simultaneously—a process called superposition—and combine with each other in a special way. This allows them to process computations incredibly faster than computers can currently achieve.
This poses a particular risk in encryption: Many current security mechanisms, such as the RSA algorithm, rely on the extremely long time it takes to analyze large numbers into their prime factors. However, with a quantum processor and a special algorithm called Shor's algorithm, this could be achieved in a much shorter time. This means that even modern cryptographic methods such as elliptic curve cryptography, which are often used in data transmission, would be at risk.
Quantum computers therefore render our established security strategies ineffective because the cryptography they are based on can be cracked within milliseconds. The solution: post-quantum cryptography – a new form of encryption.
Advantages and challenges of post-quantum cryptography
Post-quantum cryptography offers significant advantages: It increases security against future threats and enables companies to protect their IT infrastructures long-term. However, the transition is fraught with complications. Integrating new encryption methods into existing infrastructures can be complex and requires careful planning.
Furthermore, not all post-quantum-resistant methods are equally powerful. Some require more computing power or data storage than conventional methods, which can reduce performance. Companies should therefore conduct an individual risk and cost analysis to select the algorithms that best fit their needs.
Preparing for Quantum Computing: A Guide
Companies that want to prepare for the quantum future should consider the following measures:
- inventory: Analyze which cryptographic methods are used in your IT infrastructure and which security gaps exist.
- risk analysis: Assess which of your information is particularly critical and how great the threat potential of a quantum-based attack is.
- Pilot projects: Test the integration of post-quantum resistant processes in safe system components before introducing them company-wide.
- Training: Make sure your IT teams have the necessary skills to implement and support the new methods.
- Continuous verification: Stay up to date on the latest advances in post-quantum cryptography and regularly adjust your security strategy.
Given the challenges that quantum computers pose for today's encryption technologies and the complexity of the topic, it is crucial for companies to have a competent partner at their side. A good expert not only helps design appropriate security strategies but also proactively respond to new threats and ensure long-term system stability.
Conclusion: Need for action for SMEs
The quantum era is no longer an abstract vision of the future, but a concrete development that organizations should prepare for. Post-quantum cryptography offers small and medium-sized enterprises in the German-speaking region the opportunity to sustainably strengthen their cybersecurity and prepare themselves against future threats.
Those who take action now not only protect their critical information but also gain a competitive advantage. With a clear strategy, experienced specialists, and a willingness to invest in emerging technologies, companies can meet the demands of the quantum-driven future and strengthen their position in an increasingly digital world.
Would you like to learn more about post-quantum cryptography or clarify how your company should optimally prepare for the era of quantum computing? Contact us – we can competently assist you with our expertise.
