Quantum Safe cryptography

We know that there are hard problems that are difficult to solve, and we should recognize that we benefit from the existence of such problems because they form the basis of modern cryptography. Much of our information is kept secret through cryptography; without it, the internet as we know it would not exist. What is it meant by Hard maths problem? For example, consider the simple math problem 9 + 3, which equals 12. If we based our cryptography on such a simple problem, our secrets would no longer be secure. Now, let’s consider something more challenging: two prime numbers that, when multiplied, give 77 (i.e., prime number 1 * prime number 2 = 77). The prime numbers in this case are 7 and 11. While this is still relatively straightforward, imagine trying to find the product of two large prime numbers, such as those that result in a 600 or 700-digit number instead of 77. That becomes a much harder problem for computers to solve. Today’s computers would take many years to find the solution, while a quantum computer could potentially solve these problems in a matter of hours. This illustrates the concept of hard math problems that underpin much of our technology today. So what's the solution? It’s called QSC (Quantum-Safe Cryptography). It is based on hard mathematical problems that are even more difficult than finding prime factors of large numbers. Let’s take a look at the high-level concept behind this type of quantum-safe cryptography to gain a better understanding. Consider a game of chess as an analogy for how lattice cryptography works. Take the knight, for example: it moves in specific patterns (two squares in one direction and one in another, or vice versa). If you are asked to reach a specific square, it is relatively easy to find a combination of moves to get there. The problem becomes significantly harder when you are asked to reach a point that is not on a standard square. You must find the best possible approximation, which requires trial and error through many combinations. Lattice cryptography takes this concept and expands it from two dimensions to a thousand dimensions. By adding “noise” or forcing the solution to be an approximation rather than an exact point, it becomes an incredibly difficult mathematical problem—one that even the most powerful supercomputers cannot solve efficiently this is the basic understanding of our lattice cryptography that is gonna help us survive the quantum era How to Implement? Building on the conceptual foundation of lattice-based quantum-safe cryptography, organizations must now consider how to systematically adopt these algorithms within their environments. Transitioning to QSC is not just a theoretical exercise. it requires a structured approach to inventory, evaluation, and implementation. Discovery and Inventory: The first step is to identify all instances of cryptography currently in use across the organization. This process culminates in the creation of a Crypto Bill of Materials (CBOM), a comprehensive record of cryptographic assets. Evaluation and Prioritization: Once identified, these cryptographic instances must be assessed for vulnerability to quantum attacks. Teams then prioritize them based on sensitivity and risk, forming the basis of a management plan. Remediation: In this phase, vulnerable systems are replaced with quantum-safe algorithms. This may involve adjusting key lengths or adopting entirely new cryptographic standards to ensure resilience against quantum threats. Crypto Agility: The ultimate goal is achieving crypto agility—the ability to seamlessly swap out algorithms if weaknesses are discovered, without restarting the entire discovery process. Importantly, many of these quantum-safe algorithms are already available as industry standards in open-source repositories. This means organizations can begin deploying them today on existing systems, without waiting for specialized quantum hardware.