Neural-Inspired Advances in Integral Cryptanalysis

The study by Gohr et.al at CRYPTO 2019 and sunsequent related works have shown that neural networks can uncover previously unused features, offering novel insights into cryptanalysis. Motivated by these findings, we employ neural networks to learn features specifically related to integral...

Cryptanalysis of a Lattice-Based PIR Scheme for Arbitrary Database Sizes

Private Information Retrieval PIR schemes enable users to securely retrieve files from a server without disclosing the content of their queries, thereby preserving their privacy. In 2008, Melchor and Gaborit proposed a PIR scheme that achieves a balance between communication overhead and...

Improvements in Brute Force Attacks

New paper: "GPU Assisted Brute Force Cryptanalysis of GPRS, GSM, RFID, and TETRA: Brute Force Cryptanalysis of KASUMI, SPECK, and TEA3." Abstract: Key lengths in symmetric cryptography are determined with respect to the brute force attacks with current technology. While nowadays at least 128-bit...

New Advances in the Understanding of Prime Numbers

Really interesting research into the structure of prime numbers. Not immediately related to the cryptanalysis of prime-number-based public-key algorithms, but every little bit matters...

CBL Mariner 2.0 Security Update: ed (CVE-2015-2987)

The version of ed installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2015-2987 advisory. - Type74 ED before 4.0 misuses 128-bit ECB encryption for small files, which makes it easier for attackers to obtai...

Model Extraction from Neural Networks

A new paper, "Polynomial Time Cryptanalytic Extraction of Neural Network Models," by Adi Shamir and others, uses ideas from differential cryptanalysis to extract the weights inside a neural network using specific queries and their results. This is much more theoretical than practical, but its a...

Breaking the M-209

Interesting paper about a German cryptanalysis machine that helped break the US M-209 mechanical ciphering machine. The paper contains a good description of how the M-209 works...

Lattice-Based Cryptosystems and Quantum Cryptanalysis

Quantum computers are probably coming, though we dont know when--and when they arrive, they will, most likely, be able to break our standard public-key cryptography algorithms. In anticipation of this possibility, cryptographers have been working on quantum-resistant public-key algorithms. The...

Improving the Cryptanalysis of Lattice-Based Public-Key Algorithms

The winner of the Best Paper Award at Crypto this year was a significant improvement to lattice-based cryptanalysis. This is important, because a bunch of NISTs post-quantum options base their security on lattice problems. I worry about standardizing on post-quantum algorithms too quickly. We are...

Improving Shor’s Algorithm

We dont have a useful quantum computer yet, but we do have quantum algorithms. Shors algorithm has the potential to factor large numbers faster than otherwise possible, which--if the run times are actually feasible--could break both the RSA and Diffie-Hellman public-key algorithms. Now, computer...

crypto-js PBKDF2 1,000 times weaker than specified in 1993 and 1.3M times weaker than current standard

Impact Summary Crypto-js PBKDF2 is 1,000 times weaker than originally specified in 1993, and at least 1,300,000 times weaker than current industry standardOWASP PBKDF2 Cheatsheet. This is because it both 1 defaults to SHA1SHA1 wiki, a cryptographic hash algorithm considered insecure since at leas...

Enhancing TLS Security: Google Adds Quantum-Resistant Encryption in Chrome 116

Google has announced plans to add support for quantum-resistant encryption algorithms in its Chrome browser, starting with version 116. "Chrome will begin supporting X25519Kyber768 for establishing symmetric secrets in TLS, starting in Chrome 116, and available behind a flag in Chrome 115," Devon...

Researchers Find Way to Recover Cryptographic Keys by Analyzing LED Flickers

In what's an ingenious side-channel attack, a group of academics has found that it's possible to recover secret keys from a device by analyzing video footage of its power LED. "Cryptographic computations performed by the CPU change the power consumption of the device which affects the brightness ...

CVE-2023-2820

An information disclosure vulnerability in the faye endpoint in Proofpoint Threat Response / Threat Response Auto-Pull PTR/TRAP could be used by an attacker on an adjacent network to obtain credentials to integrated services via a man-in-the-middle position or cryptanalysis of the session traffic...

Information disclosure

An information disclosure vulnerability in the faye endpoint in Proofpoint Threat Response / Threat Response Auto-Pull PTR/TRAP could be used by an attacker on an adjacent network to obtain credentials to integrated services via a man-in-the-middle position or cryptanalysis of the session traffic...

CVE-2023-2820

An information disclosure vulnerability in the faye endpoint in Proofpoint Threat Response / Threat Response Auto-Pull PTR/TRAP could be used by an attacker on an adjacent network to obtain credentials to integrated services via a man-in-the-middle position or cryptanalysis of the session traffic...

CVE-2023-2820

CVE-2023-2820 affects Proofpoint Threat Response / Threat Response Auto-Pull (PTR/TRAP) via the faye endpoint. The vulnerability may allow an attacker on an adjacent network to obtain credentials to integrated services through MITM or session-traffic cryptanalysis, enabling impersonation of PTR/T...

Node.js: DiffieHellman doesn't generate keys after setting a key

DiffieHellman in Node.js did not generate new keys after setting a key, due to an issue in OpenSSL. This vulnerability could have allowed for key reuse and potential compromise of confidentiality and integrity in applications relying on DiffieHellman for security...

K16396: GnuPG vulnerability CVE-2013-4576

Security Advisory Description GnuPG 1.x before 1.4.16 generates RSA keys using sequences of introductions with certain patterns that introduce a side channel, which allows physically proximate attackers to extract RSA keys via a chosen-ciphertext attack and acoustic cryptanalysis during decryptio...

Mary Queen of Scots Letters Decrypted

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...