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@quantumcomputingreport.com
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The rapid advancement of quantum computing poses a significant threat to current encryption methods, particularly RSA, which secures much of today's internet communication. Google's recent breakthroughs have redefined the landscape of cryptographic security, with researchers like Craig Gidney significantly lowering the estimated quantum resources needed to break RSA-2048. A new study indicates that RSA-2048 could be cracked in under a week using fewer than 1 million noisy qubits, a dramatic reduction from previous estimates of around 20 million qubits and eight hours of computation. This shift accelerates the timeline for "Q-Day," the hypothetical moment when quantum computers can break modern encryption, impacting everything from email to financial transactions.
This vulnerability stems from the ability of quantum computers to utilize Shor's algorithm for factoring large numbers, a task prohibitively difficult for classical computers. Google's innovation involves several technical advancements, including approximate residue arithmetic, magic state cultivation, optimized period finding with Ekerå-Håstad algorithms, and yoked surface codes with sparse lookups. These improvements streamline modular arithmetic, reduce the depth of quantum circuits, and minimize overhead in fault-tolerant quantum circuits, collectively reducing the physical qubit requirement to under 1 million while maintaining a relatively short computation time. In response to this threat, post-quantum cryptography (PQC) is gaining momentum. PQC refers to cryptographic algorithms designed to be secure against both classical and quantum attacks. NIST has already announced the first set of quantum-safe algorithms for standardization, including FrodoKEM, a key encapsulation protocol offering a simple design and strong security guarantees. The urgency of transitioning to quantum-resistant cryptographic systems is underscored by ongoing advances in quantum computing. While the digital world relies on encryption, the evolution to AI and quantum computing is challenging the security. Professionals who understand both cybersecurity and artificial intelligence will be the leaders in adapting to these challenges.
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Siôn Geschwindt@The Next Web
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Quantum computing is rapidly advancing, presenting both opportunities and challenges. Researchers at Toshiba Europe have achieved a significant milestone by transmitting quantum-encrypted messages over a record distance of 254km using standard fiber optic cables. This breakthrough, facilitated by quantum key distribution (QKD) cryptography, marks the first instance of coherent quantum communication via existing telecom infrastructure. QKD leverages the principles of quantum mechanics to securely share encryption keys, making eavesdropping virtually impossible, as any attempt to intercept the message would immediately alert both parties involved.
This advance addresses growing concerns among European IT professionals, with 67% fearing that quantum computing could compromise current encryption standards. Unlike classical computers, which would take an impractical amount of time to break modern encryption, quantum computers can exploit phenomena like superposition and entanglement to potentially crack even the most secure classical encryptions within minutes. This has prompted global governments and organizations to accelerate the development of robust cryptographic algorithms capable of withstanding quantum attacks. Efforts are underway to build quantum-secure communication infrastructure. Heriot-Watt University recently inaugurated a £2.5 million Optical Ground Station (HOGS) to promote satellite-based quantum-secure communication. In July 2024, Toshiba Europe, GÉANT, PSNC, and Anglia Ruskin University demonstrated cryogenics-free QKD over a 254 km fiber link, using standard telecom racks and room temperature detectors. Initiatives such as Europe’s EuroQCI and ESA’s Eagle-1 satellite further underscore the commitment to developing and deploying quantum-resistant technologies, mitigating the silent threat that quantum computing poses to cybersecurity.
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@thequantuminsider.com
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Project Eleven has launched the QDay Prize, an open competition offering one Bitcoin, currently valued around $84,000 to $85,000, to anyone who can break elliptic curve cryptography (ECC) using Shor’s algorithm on a quantum computer. This initiative aims to evaluate the proximity of quantum computing to undermining ECC, a widely used encryption scheme. Participants must demonstrate the ability to break ECC using Shor's algorithm, without classical shortcuts or hybrid methods and submissions must include gate-level code and system specifications, all made publicly available for transparency.
The competition is structured around progressively larger ECC key sizes, starting from 1-bit keys, with an emphasis on demonstrating generalizable techniques that can scale to full cryptographic key lengths. The challenge, running until April 5, 2026, seeks to rigorously benchmark the real-world quantum threat to Bitcoin’s core security system. Project Eleven emphasizes that even successful attacks on small keys would be significant milestones, offering valuable insights into the security risks in modern cryptographic systems. Participants can use publicly accessible quantum hardware or private systems, and are expected to handle error-prone qubit environments realistically, given current hardware fidelities. Breaking even a few bits of a private key would be considered a significant achievement, according to Project Eleven. The QDay Prize hopes to establish a verifiable and open marker of when practical quantum attacks against widely used encryption systems may emerge, highlighting the urgency of understanding how close current technologies are to threatening ECC security.
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