Category: cryptography

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New Revelations from the Snowden Documents

Posted on By infossl
academic papers, backdoors, cryptography, Edward Snowden, nsa, privacy, Schneier news, Security technology, surveillance, Uncategorized

Jake Appelbaum’s PhD thesis contains several new revelations from the classified NSA documents provided to journalists by Edward Snowden. Nothing major, but a few more tidbits. Kind of amazing that that all happened ten years ago. At this point, those documents are more historical than anything else. And it’s unclear who has those archives anymore. … Read More “New Revelations from the Snowden Documents” »

You Can’t Rush Post-Quantum-Computing Cryptography Standards

Posted on By infossl
cryptography, encryption, national security policy, nist, quantum computing, security standards, Security technology, Uncategorized

I just read an article complaining that NIST is taking too long in finalizing its post-quantum-computing cryptography standards. This process has been going on since 2016, and since that time there has been a huge increase in quantum technology and an equally large increase in quantum understanding and interest. Yet seven years later, we have … Read More “You Can’t Rush Post-Quantum-Computing Cryptography Standards” »

Backdoor in TETRA Police Radios

Posted on By infossl
backdoors, cryptography, eavesdropping, encryption, infrastructure, law enforcement, police, radio, Security technology, Uncategorized

Seems that there is a deliberate backdoor in the twenty-year-old TErrestrial Trunked RAdio (TETRA) standard used by police forces around the world. The European Telecommunications Standards Institute (ETSI), an organization that standardizes technologies across the industry, first created TETRA in 1995. Since then, TETRA has been used in products, including radios, sold by Motorola, Airbus, … Read More “Backdoor in TETRA Police Radios” »

AI-Generated Steganography

Posted on By infossl
academic papers, artificial intelligence, cryptography, encryption, Security technology, steganography, Uncategorized

New research suggests that AIs can produce perfectly secure steganographic images: Abstract: Steganography is the practice of encoding secret information into innocuous content in such a manner that an adversarial third party would not realize that there is hidden meaning. While this problem has classically been studied in security literature, recent advances in generative models … Read More “AI-Generated Steganography” »

Side-Channel Attack against CRYSTALS-Kyber

Posted on By infossl
academic papers, cryptography, encryption, machine learning, quantum computing, quantum cryptography, Security technology, side-channel attacks, Uncategorized

CRYSTALS-Kyber is one of the public-key algorithms currently recommended by NIST as part of its post-quantum cryptography standardization process. Researchers have just published a side-channel attack—using power consumption—against an implementation of the algorithm that was supposed to be resistant against that sort of attack. The algorithm is not “broken” or “cracked”—despite headlines to the contrary—this … Read More “Side-Channel Attack against CRYSTALS-Kyber” »

Mary Queen of Scots Letters Decrypted

Posted on By infossl
cryptography, encryption, history of cryptography, Security technology, Uncategorized

This is a neat piece of historical research. The team of computer scientist George Lasry, pianist Norbert Biermann and astrophysicist Satoshi Tomokiyo—all keen cryptographers—initially thought the batch of encoded documents related to Italy, because that was how they were filed at the Bibliothèque Nationale de France. However, they quickly realised the letters were in French. … Read More “Mary Queen of Scots Letters Decrypted” »

Attacking Machine Learning Systems

Posted on By infossl
cryptography, cyberattack, cybersecurity, essays, machine learning, Security technology, Uncategorized, vulnerabilities

The field of machine learning (ML) security—and corresponding adversarial ML—is rapidly advancing as researchers develop sophisticated techniques to perturb, disrupt, or steal the ML model or data. It’s a heady time; because we know so little about the security of these systems, there are many opportunities for new researchers to publish in this field. In … Read More “Attacking Machine Learning Systems” »

Breaking RSA with a Quantum Computer

Posted on By infossl
academic papers, china, cryptanalysis, cryptography, quantum computing, rsa, Security technology, Uncategorized

A group of Chinese researchers have just published a paper claiming that they can—although they have not yet done so—break 2048-bit RSA. This is something to take seriously. It might not be correct, but it’s not obviously wrong. We have long known from Shor’s algorithm that factoring with a quantum computer is easy. But it … Read More “Breaking RSA with a Quantum Computer” »

A Taxonomy of Access Control

Posted on By infossl
cryptocurrency, cryptography, keys, Security technology, taxonomies, Uncategorized

My personal definition of a brilliant idea is one that is immediately obvious once it’s explained, but no one has thought of it before. I can’t believe that no one has described this taxonomy of access control before Ittay Eyal laid it out in this paper. The paper is about cryptocurrency wallet design, but the … Read More “A Taxonomy of Access Control” »

NIST’s Post-Quantum Cryptography Standards

Posted on By infossl
algorithms, cryptanalysis, cryptography, nist, quantum computing, quantum cryptography, Security technology, Uncategorized

Quantum computing is a completely new paradigm for computers. A quantum computer uses quantum properties such as superposition, which allows a qubit (a quantum bit) to be neither 0 nor 1, but something much more complicated. In theory, such a computer can solve problems too complex for conventional computers. Current quantum computers are still toy … Read More “NIST’s Post-Quantum Cryptography Standards” »