Ilias Savvas’ Post

Quantum Cryptography: The New Horizon of Data Security Quantum cryptography utilizes quantum physics principles to develop encryption systems that are nearly impossible to hack. Through the utilization of Quantum Key Distribution (QKD), this technique guarantees that any effort to intercept the communication will be identified, proving to be a valuable asset in safeguarding confidential data in the years ahead. Although the technology is not widely used because of logistical obstacles like requiring dedicated fiber optics, research is still advancing long-distance secure transmission. 🔐 Quantum Key Distribution (QKD) ensures that any attempts to eavesdrop can be identified by interfering with the quantum state of photons. 🔐 Practical Obstacles: Existing approaches necessitate special fiber optics, restricting the widespread use of quantum cryptography. 🔐 Potential Future Developments: Current studies in China have shown the ability to send quantum keys over extensive distances using satellites and relay nodes. #LetsBeCarefulOutThere #flcc270 https://lnkd.in/eP8KejRe

This article gives a good overview of the challenges of migrating to Post-quantum cryptographic algorithms and highlights the advances being made in creating stable, more reliable quantum computers challenging the original 1 logical qubit from 1000 physical qubits to more practical ratios. Driven by new quantum error correction technologies.

Similarly, the ‘spooky’ sensitivity in detection enabled by techniques such as ghost imaging and quantum remote sensing could enhance PLA ISR capabilities. It seems unlikely that quantum cryptography will ever enable truly perfect security, given the perhaps inevitable human and engineering challenges, along with remaining vulnerabilities to exploitation. At present, quantum computing, while approaching the symbolic milestone of “quantum supremacy,” faces a long road ahead, due to challenges of scaling and error correction. Certain quantum devices, for sensing, metrology, and positioning, may be quite useful but could enable fairly incremental, evolutionary improvements relative to the full range of alternatives. Note that quantum science – communication, computing, and sensing – was previously addressed by the Mad Scientist Laboratory as a Pink Flamingo. https://lnkd.in/g6wKpzGk

Exploring Real-World Applications of Near-Quantum Computing. As quantum computing continues to evolve, we're starting to see some tangible, real-world applications emerge from near-quantum computing techniques. These early use cases, leveraging the power of quantum-inspired algorithms, are beginning to solve complex problems in areas like optimization, cryptography, and materials science. While we're still on the path toward fully operational quantum computers, these advancements are a promising glimpse into the future of technology. For a deeper dive into how near-quantum computing is already making an impact, check out this article: [IEEE Spectrum - What Are Quantum Computers Used For?] https://lnkd.in/deBVKVjq

There’s a quote, saying that if the laws of physics don’t forbid it, humans will manage to do it at some point. I can’t remember the author nor the precise quote but my point is: we will have quantum computing at some point. So all this hype about quantum computing and post quantum cryptography and security is really good. If it's going to happen, better be ready — especially since the first to be able to break our current cryptographic security won't advertise it, so I'm very supportive of the research and implementation of post-quantum cryptography. However, I think this article from Edd Gent on IEEE Spectrum is worth a read when it comes to practical applications. From the need of a layer of « logical qubits » to the low data bandwidth you get in and out of a quantum computer, it’s a good hard look on current limitations to stay realistic. #quantumsecurity #quantumcomputing https://lnkd.in/ej2kdAZX

Check out this week's edition of Quantum Computing Weekly! https://lnkd.in/ebjZJ5XM Recent reports indicate that Colorado's quantum workforce could reach 10,000 within the next decade, driven by initiatives from local universities and tech hubs. Additionally, IBM has launched its most advanced quantum computers, enhancing capabilities for scientific research and practical applications. Meanwhile, partnerships in quantum cryptography are emerging to secure financial communications against potential quantum threats, showcasing the technology's growing importance in various sectors.

𝑄𝑢𝑎𝑛𝑡𝑢𝑚 𝐶𝑟𝑦𝑝𝑡𝑜𝑔𝑟𝑎𝑝ℎ𝑦: 𝐵𝑟𝑖𝑑𝑔𝑖𝑛𝑔 𝑇ℎ𝑒𝑜𝑟𝑒𝑡𝑖𝑐𝑎𝑙 𝐶𝑜𝑛𝑐𝑒𝑝𝑡𝑠 𝑤𝑖𝑡ℎ 𝑃𝑟𝑎𝑐𝑡𝑖𝑐𝑎𝑙 𝐼𝑚𝑝𝑙𝑒𝑚𝑒𝑛𝑡𝑎𝑡𝑖𝑜𝑛𝑠 Our new research delves into the evolution of quantum cryptography, blending theoretical principles with practical applications, from its foundational concepts in quantum mechanics to modern quantum communication technologies. We explore key theoretical concepts like superposition and entanglement in Quantum Key Distribution (QKD), while addressing challenges in translating theory into practice, including technology, scalability, and security issues. Additionally, we highlight current trends and future prospects, emphasizing quantum cryptography's role in shaping the future of secure communication. 👉 https://lnkd.in/dv3WQtvx

A Quantum Leap in Factoring – Communications of the ACM: In the mid-1990s, Peter Shor developed the first quantum computing algorithms, demonstrating their potential to vastly outperform classical computers in factoring large numbers, a task crucial for public-key cryptography. Oded Regev of New York University has recently proposed a new scheme that shows promise for significantly reducing the resources required for factoring. However, while Regev's innovation represents an asymptotic improvement, its practical consequences are yet to be determined. Regev's approach involves looking for periodicity in a higher-dimensional space, leading to a more efficient computation process. It also requires more qubits but can be optimized for space. The introduction of new quantum algorithms has sparked optimism for future improvements, but the practical implications and implementation of these advancements remain uncertain.

Surviving the “quantum apocalypse” with fully homomorphic encryption: In the past few years, an increasing number of tech companies, organizations, and even governments have been working on one of the next big things in the tech world: successfully building quantum computers. These actors see a lot of potential in the technology. Quantum computing spreads across a wide range of disciplines both on the hardware research and application development fronts, including elements of computer science, physics, and mathematics. The goal is to combine these … More → The post Surviving the “quantum apocalypse” with fully homomorphic encryption appeared first on Help Net Security.

🔐 How Fast Can a Quantum Computer Brute Force AES-128? 🔐 The advent of quantum computing brings exciting advancements, but it also poses new challenges, especially in cryptography. Ever wondered how fast a quantum computer could brute force an AES-128 bit key? Here's a quick breakdown: ✨ Grover's Algorithm: This quantum algorithm can theoretically reduce the number of operations needed to brute-force AES-128 from 21272^{127}2127 (classical) to about 2642^{64}264. ⚙️ Practical Challenges: Quantum Circuit Depth: Long computations face issues with coherence and error rates. Qubit Quality: High error rates and limited coherence times in current qubits are significant hurdles. Number of Qubits: Thousands of high-quality qubits are needed, considering error correction overheads. 💡 Current State: Today's quantum computers, with only a few hundred qubits and high error rates, aren't yet capable of efficiently brute-forcing AES-128. 🚀 Future Potential: If we achieve perfect quantum computers with enough qubits and no errors, Grover's algorithm could hypothetically brute force AES-128 in 2642^{64}264 operations. However, this remains far from our current capabilities. 📍based on these assumptions, it would take approximately 583 years for a hypothetical perfect quantum computer with a gate speed of 1 nanosecond per operation to brute force an AES-128 key using Grover's algorithm. This highlights that even with significant theoretical advancements, practical quantum computing power capable of breaking AES-128 in a reasonable time frame remains a distant prospect. 🔍 Stay tuned for more insights as we continue to explore the fascinating intersection of quantum computing and cybersecurity! #QuantumComputing #Cybersecurity #Cryptography #Innovation #TechTrendsUnder