The hottest Cryptography Substack posts right now

And their main takeaways
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Top Technology Topics

Faster NTT with RISC-V Vector

Fprox’s Substack • 62 implied HN points • 11 Jan 25
🕹 Technology Software Programming Cryptography Hardware Algorithms
  1. The Number Theoretic Transform (NTT) can speed up polynomial multiplications, which are important for modern cryptography. Optimizing how this process works leads to significant performance improvements.
  2. Using assembly language can help tailor code for specific hardware, allowing more direct control over how instructions are executed, which can greatly enhance speed.
  3. Combining multiple steps of the NTT process into fewer loops and minimizing unnecessary calculations can lead to much lower execution times, achieving targets that seemed difficult at first.

Quick Note: swapping pairs with RVV

Fprox’s Substack • 62 implied HN points • 25 Dec 24
🕹 Technology Programming Algorithms Computer Science Software Development Cryptography
  1. There are two main techniques for swapping pairs of elements using RISC-V Vector: one uses slidedown and slideup operations, and the other uses narrowing and widening arithmetic. Each has its own method for rearranging elements.
  2. The slidedown and slideup technique tends to be faster because it uses fewer operations and avoids extra complexity, making it more efficient for swapping elements in practice.
  3. In testing, the slidedown method consistently showed lower latency in tasks compared to the widening approach, indicating it might be the better choice for optimizing performance in applications like NTT implementations.

Number Theoretic Transform with RVV

Fprox’s Substack • 83 implied HN points • 07 Dec 24
🕹 Technology Algorithms Cryptography Computing Software Development Mathematics
  1. The Number Theoretic Transform (NTT) helps speed up polynomial multiplication, which is important in cryptography. It uses a smart method to do complicated calculations faster than traditional methods.
  2. Using RISC-V Vector (RVV) technology can further improve the speed of NTT operations. This means that by using special hardware instructions, operations can be completed much quicker.
  3. Benchmarks show that a well-optimized NTT using RVV can be substantially faster than basic polynomial multiplication, making it crucial for applications in secure communications.

Under the microscope: Skeleton Warriors (Saturn, PlayStation)

Rings of Saturn • 14 implied HN points • 08 Dec 24
🕹 Technology Video Games Game Development Cryptography Programming Mathematics
  1. The article talks about finding cheat codes for the game Skeleton Warriors on the Saturn and PlayStation consoles. It highlights how some of these codes were previously unknown and required research and coding to uncover.
  2. The author used a combination of brute force methods and mathematical approaches to determine the missing cheat codes. They collaborated with a cryptographer to solve complex hashing problems involved in the game.
  3. Mick West, a cofounder of Neversoft, contributed to the findings by sharing source code and insights about how the cheats work in the game. This shows a connection between game development and player discovery.
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Decentralized Cloud Computing

DeFi Education • 679 implied HN points • 31 May 22
🕹 Technology Cloud Computing Blockchain Decentralization Cryptography Digital innovation
  1. Decentralized cloud computing is changing how we store and process data. It allows users to control their own data without relying on big companies.
  2. This approach can lead to better security and privacy for users. It’s often seen as a more trustable alternative to centralized systems.
  3. As the market for tokens is evolving, exploring decentralized projects can unveil exciting new opportunities in tech and finance. Staying informed can help you find the next big thing.

The Challenges and Benefits of Quantum Computing Security

Rod’s Blog • 39 implied HN points • 19 Feb 24
🕹 Technology Quantum Computing Cryptography Security
  1. Quantum computing poses a serious threat to conventional cryptography due to powerful quantum algorithms like Shor's and Grover's, which can compromise commonly used encryption schemes.
  2. Preparing for quantum computing challenges now can lead to the development of quantum-resistant cryptography, using both classical and quantum techniques to withstand quantum attacks and enhance security.
  3. Quantum cryptography offers innovative possibilities like quantum key distribution and quantum secure communication, driving collaboration and innovation across various fields to enhance security and privacy.

How to Fake Decryption

Nonsense on Stilts • 1 HN point • 04 Sep 24
🕹 Technology Cryptography Cybersecurity Information Theory Computer Science Data Privacy
  1. You can create a fake key and a fake message to trick someone into thinking they decrypted a message. This lets you mislead anyone watching your communication.
  2. It's important to plan what the fake message will be before sending the real one, so both parties know what to expect if asked.
  3. This technique could be used for serious purposes, like hiding important communications, or just for fun in games and stories.

☎️ E20: The State of Privacy Enhancing Technology and The Era of “Shift-Up” (Feat. Karim Eldefrawy of Confidencial.io)

Let Us Face the Future • 119 implied HN points • 19 Oct 23
🕹 Technology Data security Cryptography Compliance Application Security
  1. Application-level security is crucial and there is a trend towards 'shift-up' in data security.
  2. Compliance with NIST standards is a significant factor for adoption in regulated industries.
  3. The NIST PQC standardization process will drive wider adoption of cryptographic tools.

Non-Newtonian Computing?

Bzogramming • 30 implied HN points • 07 Jan 24
🕹 Technology Computing Physics Cryptography Algorithms AI
  1. Physics has alternative framings like Lagrangian and Hamiltonian mechanics, which could inspire new ways of viewing computation.
  2. Reversible computing, preserving information by having bijective gates, is crucial for energy efficiency and future computing technologies.
  3. Studying constraint solvers and NP-complete problems can lead to insights for accelerating search algorithms and developing new computing approaches.

Want to help me upgrade digital identity?

Steve Kirsch's newsletter • 4 implied HN points • 01 Feb 25
🕹 Technology Digital Identity Cryptography Cloud Security Privacy
  1. Usernames and passwords are outdated. A new method of digital identity would make online security simpler and safer.
  2. You can manage your identity without needing to remember complicated passwords or codes. Just an alias is all you need.
  3. There’s a need for experts in cryptography and cloud security to help create a more secure and self-sovereign identity system.

Fostering Trust: Why NIST and the NSA Must Prioritise Transparency in Post-Quantum Cryptography.

Deep-Tech Newsletter • 19 implied HN points • 19 Oct 23
🕹 Technology Cryptography Transparency Collaboration Security Innovation
  1. Post-Quantum Cryptography is crucial in securing digital communications against potential threats from quantum computers
  2. Enhancing transparency in standardization processes, inclusive collaboration, independent audits, and regular updates can build trust in cryptographic standards
  3. Collaboration between intelligence agencies and the private sector is vital for protecting critical infrastructure, fostering innovation, and addressing borderless cyber threats

TechLetters #124 - Generative-AI for ads approaching. Dwell time goes down.

Lukasz Olejnik on Cyber, Privacy and Tech Policy Critique • 19 implied HN points • 24 Apr 23
🕹 Technology Security Cybersecurity Disinformation AI Cryptography
  1. Google plans to use generative AI for dynamic ads, raising concerns about transparency and data protection.
  2. New cryptographic standards are compared to a jigsaw puzzle, emphasizing the complexity and precision required.
  3. The EU is establishing a 'cyber solidarity' reserve to address cybersecurity threats, with a focus on supporting countries like Ukraine.

[EVM: Zero to Hero] All About Accounts

Coinsights • 38 implied HN points • 22 Feb 23
🕹 Technology Blockchain Cryptography Smart Contracts Wallets
  1. EVM supports two types of accounts: Externally Owned Accounts (EOAs) and Contract Accounts (smart contracts)
  2. EOAs are controlled by private keys and can initiate transactions, while smart contracts run on code and cannot initiate transactions
  3. Smart Contract Wallets (SCWs) enhance wallet experience by utilizing the customizability of smart contracts

Newsletter #2: Certain Randomness

Decoding Coding • 19 implied HN points • 09 Feb 23
🕹 Technology Computer Science Algorithms Cryptography Machine Learning Randomness
  1. Random numbers are important in computer science for things like cryptography, simulations, and game mechanics. They help create unpredictability and realism in these applications.
  2. There are two main types of random number generators: True Random Number Generators (TRNGs) that use real-world entropy, and Pseudo Random Number Generators (PRNGs) that produce predictable outcomes based on a starting value.
  3. Algorithms like Linear Congruential Generators (LCGs) and Mersenne Twister are commonly used for generating pseudo-random numbers in various applications due to their efficiency and quality.

The Game of Diophantus

Thái | Hacker | Kỹ sư tin tặc • 1 HN point • 26 Jun 24
🔬 Science Mathematics Cryptography History Astrology Physics
  1. Diophantus, an ancient Greek mathematician, is known for solving equations with two unknowns and his work formed the basis for modern cryptographic algorithms like ECC.
  2. The lost works of Diophantus, preserved during historical upheavals, resurfaced over centuries, impacting later mathematicians like Fermat, who posed the famous Last Theorem.
  3. The journey from Tycho, who pioneered data science with precise astronomical observations, to Kepler discovering that planetary orbits are ellipses, connects to the development of elliptic curves in mathematics.

Lecture 09 Replay + LOGML 2022

Quantum Formalism • 19 implied HN points • 28 Jun 22
🚌 Education Mathematics Cryptography Community Sponsorship Courses
  1. The lecture 09 replay covering the application of cyclic groups and DLP in cryptography is available on YouTube.
  2. Future plans include a mini-course series on cryptography focusing on DLP cryptographic systems for security assurance.
  3. Joining the Discord Community is encouraged for organizing group study sessions and accessing live study session links.

Siêu trí tuệ: tìm số nguyên tố hay là tăng minh bạch cho ngành đánh đề

Thái | Hacker | Kỹ sư tin tặc • 39 implied HN points • 27 Dec 19
🔬 Science Mathematics Algorithms Randomness Probability Cryptography
  1. When faced with challenges involving prime numbers, clever algorithms can help quickly eliminate composite numbers and pinpoint the secret numbers.
  2. The difficulty of a problem depends on the randomness of number selection within a matrix and the position of prime numbers.
  3. Designing a fair random number generation system is crucial for ensuring transparency, not only in intellectual competitions but also in traditional gambling industries.

Làm an toàn thông tin thì học gì?

Thái | Hacker | Kỹ sư tin tặc • 139 implied HN points • 02 May 12
🕹 Technology Security Programming Networking Cryptography Forensics
  1. Information security is a broad field with many areas of expertise, so it's important to choose a focus that interests you.
  2. Key roles in information security include product security, operations security, applied security, and threat analysis.
  3. To excel in information security, developing strong programming skills, mastering tools like IDA Pro, and understanding concepts in areas like cryptography and network security are essential.

alice and bob

Thái | Hacker | Kỹ sư tin tặc • 19 implied HN points • 23 Mar 08
🕹 Technology Crypto Encryption Cryptography Data security
  1. The post discusses the concept of encryption through a rap called "Alice and Bob". It highlights the importance of protecting messages and data.
  2. Various encryption techniques and algorithms like DES, Twofish, and Blowfish are mentioned in the rap, emphasizing the significance of secure communication.
  3. The rap also touches on the importance of random number generation, RSA encryption, and hashing functions like SHA-1 for maintaining data integrity and security.

On testing (EC)DH and (EC)DSA

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 11 Apr 17
🕹 Technology Network Security Cryptography Programming
  1. Validate domain parameters to ensure security in (EC)DSA and (EC)DH. In real-world applications, parameters are typically generated internally or selected from standard options.
  2. In (EC)DSA, if Mallory can manipulate domain parameters, key recovery becomes a potential issue. ECDSA could be vulnerable if the base point and curve are not properly validated.
  3. For (EC)DH security, thorough validation of domain parameters is crucial, especially in scenarios where parameters are chosen by a potentially untrusted source like in SSL handshake.

Trivial birthday attacks against HMAC

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 06 Apr 16
🕹 Technology Crypto Security Networking Cryptography Cybersecurity
  1. HMAC is vulnerable to birthday attacks, which can lead to forged signatures with lower cost.
  2. The second attack, duplicate signature attack, is security-relevant as it can produce two messages with the same tag, exploiting a server's validation system.
  3. Birthday attacks on HMAC can often be parallelized, and using HMAC-SHA256 is recommended for increased security.

Diffie & Hellman win the Nobel prize of computer science, yay!

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 02 Mar 16
🕹 Technology Computer Science Cryptography Internet Security Mathematics
  1. Diffie & Hellman won the Nobel prize in computer science for their groundbreaking work in cryptography.
  2. Their invention of Diffie-Hellman is a crucial component of internet security, used when connecting to major platforms like Google and Facebook.
  3. Despite its complexity, the math trick behind Diffie-Hellman is surprisingly simple and has remained unsolved for over 40 years.

Exploiting the Diffie-Hellman bug in socat

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 03 Feb 16
🕹 Technology Cybersecurity Cryptography Exploitation
  1. The Diffie-Hellman bug in socat involved a vulnerability where the hard-coded DH p parameter was not prime, making the key exchange weaker and potentially insecure.
  2. Knowing the factors of the p parameter can allow one to solve the discrete log problem (DLP) on Z_p through the Chinese Remainder Theorem, which can be a powerful cryptanalysis tool.
  3. To exploit the bug, one can factor p completely, reduce DLP on Z_p to a smaller group, use Pollard's rho or index calculus, sniff socat traffic, and profit - highlighting the potential risks and methods involved in exploiting this vulnerability.

Exploiting the math/rsa bug in Go

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 15 Jan 16
🕹 Technology Programming Cybersecurity Cryptography
  1. The math/rsa bug in Go impacted crypto/tls and crypto/openpgp, prompting the need to change RSA private keys.
  2. Go uses Montgomery reduction and Chinese Remainder Theorem to speed up modular operations, but a small mistake led to leaking RSA private keys.
  3. By exploiting the bug, one can potentially obtain the RSA private key values and learn how multiple modular results can help determine values like 'q'.

A history of elliptic curves in tweets

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 04 Sep 20
💾 History Mathematics Cryptography Science
  1. The history of elliptic curves dates back to the work of prominent mathematicians like Kepler, Newton, and Leibniz, who laid the foundation for further exploration.
  2. Various mathematicians such as Bernoulli, Liouville, and Legendre made significant contributions to understanding elliptic integrals and functions, paving the way for further advancements in mathematics.
  3. Elliptic curves have not only played a crucial role in mathematics but also in modern cryptography, where figures like Diffie-Hellman and NSA have explored their encryption capabilities.

Lecture 09 Invitation: Application of Cyclic Groups and DLP in Cryptography

Quantum Formalism • 0 implied HN points • 20 Jun 22
🔮 Crypto Cryptography Mathematics Community Mentorship
  1. Group Theory Crash Course: Catch up on missed live sessions with available recordings on YouTube.
  2. Discord Community: Join the Discord Server for group study sessions and community engagement.
  3. QF Mathematics Mentorship: Utilize the new six-month mathematics mentorship program, connecting with PhD-level mathematicians for guidance.

Post-Quantum Cryptography Standards

Quantum Formalism • 0 implied HN points • 05 Jul 22
🕹 Technology Cryptography Courses Community Machine Learning
  1. The US National Institute of Standards and Technology announced post-quantum cryptography standardisation proposals, marking a historic day in modern cryptography.
  2. Cryptography courses will now include post-quantum cryptography standards in the curriculum, with a focus on the selected standards.
  3. The Quantum Formalism community encourages participation in lectures, Discord community engagements, and sponsorships for events like LOGML Summer School, emphasizing the importance of advanced Geometry in Machine Learning.

Sansec announced to acquire Jiangnan Keyou

CyberSecurityMew • 0 implied HN points • 20 Jun 23
💼 Business Acquisition Cryptography Regulations Industry
  1. Sansec announced the acquisition of 66.9349% shares of Jiangnan Keyou on June 19, 2023, aiming to improve resource integration and leverage synergies.
  2. China's regulatory framework for cryptography has been improving with laws like the 'Password Law' and revised 'Regulations on the Administration of Commercial Cryptography,' accelerating the industry's development.
  3. Upon completion of the acquisition, Jiangnan Keyou will become a wholly-owned subsidiary of Sansec.

Beijing Infosec Strategic Investment in Yunjizhi Technology

CyberSecurityMew • 0 implied HN points • 08 Jan 24
🕹 Technology Cryptography Data security Innovation
  1. Beijing Infosec made a strategic investment in Yunjizhi Technology on January 8, 2024, initiating a partnership in the data security industry.
  2. Infosec specializes in commercial cryptography products for sectors like finance, government, and enterprises, while Yunjizhi offers structured and unstructured data security products and services.
  3. Through collaboration, Infosec and Yunjizhi aim to tackle data security challenges, introduce innovative technologies, and advance the industry's development.

The High Potential of Satellites

Splitting Infinity • 0 implied HN points • 26 Sep 23
🕹 Technology Space Communications Cryptography Imaging
  1. The value of industry in orbit will be enormous, with falling launch prices enabling new possibilities for Earth in areas such as communications and ecosystem management.
  2. Satellites can revolutionize communications by providing fast, ubiquitous space internet and increasing the speed and accessibility of various applications like stock exchanges and online gaming.
  3. Satellites have great potential for enhancing security through the use of cryptography, as they offer secure platforms for encryption methods like quantum cryptography and relativistic cryptography.

The Public Goods Funding Landscape

Splitting Infinity • 0 implied HN points • 15 Oct 23
🔬 Science Cryptocurrency Public Goods Funding Cryptography
  1. Public goods are resources that are nonexcludable and nonrivalrous, and modern technology is making some private goods resemble public goods.
  2. Mechanisms for funding public goods face challenges like the free-rider problem and impossibility theorems regarding efficiency, incentive compatibility, individual rationality, and budget balance.
  3. Different mechanisms like assurance contracts, Vickrey-Clarke-Groves mechanism, quadratic funding, lotteries, and the Lindahl process aim to address the public goods funding problem, each with its own strengths and challenges.

How E2E Encryption works it magic? + Signal Protocol

The ZenMode • 0 implied HN points • 25 Feb 24
🕹 Technology Encryption Algorithms Messaging Cryptography Security
  1. Encryption is like a secret code that keeps your information safe and private using algorithms and keys.
  2. End-to-end encryption ensures that only the sender and recipient can access and read messages, offering a high level of security and privacy.
  3. Signal Protocol, with features like the Double Ratchet Algorithm, is widely used in popular messaging apps to provide strong security for user communications.

The Internet of Broken Protocols: Showcase #8

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 16 Oct 19
🕹 Technology Cryptography Encryption Security
  1. Cascading multiple encryption algorithms in a specific order, known as a cascade, may not always improve security as commonly thought.
  2. Analyzing a cascade of MAC and digital signature algorithms can reveal potential vulnerabilities in data protection methods.
  3. Using a combination of GMAC with a digital signature for file integrity may not guarantee security as intended, leading to potential security flaws.