Gregor Leander

Publications:

Breaking HALFLOOP-24 ClepsydraCache - Preventing Cache Attacks with Time-Based Evictions Improved Differential-Linear Attacks with Applications to ARX Ciphers Decomposing Linear Layers New Instances of Quadratic APN Functions New Attacks from Old Distinguishers Improved Attacks on Serpent PRINCEv2 - More Security for (Almost) No Overhead Simon's Algorithm and Symmetric Crypto: Generalizations and Automatized Applications Trims and extensions of quadratic APN functions A Cautionary Note on Protecting Xilinx' UltraScale(+) Bitstream Encryption and Authentication Engine Constructing and Deconstructing Intentional Weaknesses in Symmetric Ciphers Strong and Tight Security Guarantees Against Integral Distinguishers Generic Framework for Key-Guessing Improvements Cryptanalysis of the GPRS Encryption Algorithms GEA-1 and GEA-2 Lower Bounds on the Degree of Block Ciphers SKINNY-AEAD and SKINNY-Hash Modeling for Three-Subset Division Property without Unknown Subset -Improved Cube Attacks against Trivium and Grain-128AEAD Out of Oddity – New Cryptanalytic Techniques against Symmetric Primitives Optimized for Integrity Proof Systems Improved Differential-Linear Attacks with Applications to ARX Ciphers The SPEEDY Family of Block Ciphers - Engineering an Ultra Low-Latency Cipher from Gate Level for Secure Processor Architectures