Single-Core CPU Cracked Post-Quantum Encryption Candidate Algorithm in Just an Hour

A late-stage candidate encryption algorithm that was meant to withstand decryption by powerful quantum computers in the future has been trivially cracked by using a computer running Intel Xeon CPU in an hour's time. The algorithm in question is SIKE — short for Supersingular Isogeny Key...

How to try to predict the output of Micali-Schnorr Generator (MS-DRBG) knowing the factorization

The article was modified since its publication. Last update was 09/10/2017 See also Part II and Part III of this series tl;dr in this post we are going to describe how to try predict the output of Micali-Schnorr Generator MS-DRBG knowing the factorization of the n value. If this sounds like, "why...

Historical courses and resorts in Elliptic Curves Cryptography - Is Curve25519 dead?

tl;dr This short blog post serves to me to recollect some of the thing I have been learning climbing about Elliptic Curves Cryptography ECC from now on during the last months/years, so please take it with a grain of salt since it might contains some erroneous beliefs. '80 - Introduction...

DEBIAN-CVE-2007-6755

The NIST SP 800-90A default statement of the Dual Elliptic Curve Deterministic Random Bit Generation DualECDRBG algorithm contains point Q constants with a possible relationship to certain "skeleton key" values, which might allow context-dependent attackers to defeat cryptographic protection...

Ubuntu Forums Password Breach Exposes 1.8 Million Users

Every username, password and email address used by members of the Ubuntu Forums was accessed in a breach reported on Saturday by the free Linux distribution. More than 1.82 million accounts stored in the forums’ database were stolen, according to a notice posted on the forums’ home page Saturday...

New Attack Finds AES Keys Several Times Faster Than Brute Force

A group of researchers have developed a new attack that enables them to find AES keys several times faster than was previously thought possible, reducing the complexity of finding the keys on AES-128, AES-192 and AES-256. However, the attack does not pose any practical threat to currently deploye...

New Attack Against AES-256 a 'Huge Result'

A group of cryptographers has devised a new attack against AES, the de facto standard encryption algorithm, that enables them to recover an encryption key in far less time than had been possible before. The attack can recover an AES-256 key in a small enough amount of time to make the method...