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NishMath - #communication
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@medium.com
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Medium is currently hosting a series of articles that delve into the core concepts and practical applications of cryptography. These articles aim to demystify complex topics such as symmetric key cryptography, also known as secret key or private key cryptography, where a single shared key is used for both encryption and decryption. This method is highlighted for its speed and efficiency, making it suitable for bulk data encryption, though it primarily provides confidentiality and requires secure key distribution. The resources available are designed to cater to individuals with varying levels of expertise, offering accessible guides to enhance their understanding of secure communication and cryptographic systems.
The published materials offer detailed explorations of cryptographic techniques, including AES-256 encryption and decryption. AES-256, which stands for Advanced Encryption Standard with a 256-bit key size, is a symmetric encryption algorithm renowned for its high level of security. Articles break down the internal mechanics of AES-256, explaining the rounds of transformation and key expansion involved in the encryption process. These explanations are presented in both technical terms for those with a deeper understanding and in layman's terms to make the concepts accessible to a broader audience. In addition to theoretical explanations, the Medium articles also showcase the practical applications of cryptography. One example provided is the combination of OSINT (Open Source Intelligence), web, crypto, and forensics techniques in CTF (Capture The Flag) challenges. These challenges offer hands-on experience in applying cryptographic principles to real-world scenarios, such as identifying the final resting place of historical figures through OSINT techniques. The series underscores the importance of mastering cryptography in the evolving landscape of cybersecurity, equipping readers with the knowledge to secure digital communications and protect sensitive information.
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@thequantuminsider.com
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Heriot-Watt University has launched a £2.5 million Optical Ground Station (HOGS) at its Research Park in Edinburgh, marking a significant advancement in satellite-based quantum-secure communication. The facility, developed under the UK Quantum Communications Hub, features a 70-cm precision telescope equipped with adaptive optics and quantum detectors. This investment positions Heriot-Watt at the forefront of quantum communication research and development.
The HOGS facility will enable quantum key distribution (QKD) experiments with satellites, facilitating secure communication channels resistant to future decryption by quantum computers. The station is equipped to monitor space debris and test ultra-high-speed optical communications for next-generation networks. This is the UK’s first major infrastructure investment in free-space quantum key distribution research, as it will serve as a testbed for space-to-ground optical links that use quantum-secure protocols to exchange encryption keys via single photons. The project marks a major step in the UK’s efforts to build a quantum-secure internet, offering a unique testbed for industry and academia. Connected via dark fibre to Heriot-Watt’s quantum labs, HOGS enables real-time simulation and validation of urban to intercontinental optical quantum networks. HOGS is part of Heriot-Watt’s leadership in the new Integrated Quantum Networks (IQN) Hub, positioning the university as a central player in the development of quantum-secure communications. The facility aims to grow Scotland’s space economy and future workforce, partnering with universities, national laboratories, and businesses, including STEM programs for students.
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