Tag Algorithms

A (somewhat) gentle introduction to lattice-based post-quantum cryptography

In recent years, significant progress in researching and building quantum computers has been made. A fully-fledged quantum computer would be able to efficiently solve a distinct set of mathematical problems like integer factorization and the discrete logarithm, which are the basis for a wide range of cryptographic schemes. In 2016, NIST announced an open competition with the goal of finding and standardizing suitable algorithms for quantum-resistant cryptography. The standardization effort by NIST is aimed at post-quantum secure KEMs and digital signatures. In this article, two of the to-be-standardized algorithms, Kyber and Dilithium, are presented and some of their mathematical details are outlined. Both algorithms are based on so-called lattices and the thereupon constructed »Learning with Errors«, which we will get to know in the following.

ChatGPT — the hot new tool for hackers?

ChatGPT is the AI software that supposedly does it all: It's expected to compose newspaper articles and write theses — or program malware. Is ChatGPT developing into a new tool for hackers and cyber criminals that makes it even easier for them to create malware? Institute director Prof. Dr. Claudia Eckert and AI expert Dr. Nicolas Müller give their opinion on the potential threat to digital security posed by ChatGPT.