Capability of evolutionary cryptosystems against differential cryptanalysis

Conditional Differential Cryptanalysis of NLFSR-Based Cryptosystems

Non-linear feedback shift registers are widely used in lightweight cryptographic primitives. For such constructions we propose a general analysis technique based on differential cryptanalysis. The essential idea is to identify conditions on the internal state to obtain a deterministic differential characteristic for a large number of rounds. Depending on whether these conditions involve public ...

Cryptanalysis of Hybrid Cryptosystems

Cryptanalysis of the Square Cryptosystems

Following the cryptanalyses of the encryption scheme HFE and of the signature scheme SFLASH, no serious alternative multivariate cryptosystems remained, except maybe the signature schemes UOV and HFE−−. Recently, two proposals have been made to build highly efficient multivariate cryptosystems around a quadratic internal transformation: the first one is a signature scheme called square-vinegar ...

"Provable" Security against Differential and Linear Cryptanalysis

In this invited talk, a brief survey on the developments of countermeasures against differential and linear cryptanalysis methods is presented. 1 Nonlinearity of S-boxes Throughout the eighties the unpublished design criteria of the DES had inspired various authors to invent formal nonlinearity criteria for S-boxes such as the strict avalanche criterion [30] and the propagation criterion [27]. ...

Cryptanalysis of RSA-type cryptosystems: A visit

This paper surveys RSA-type implementations based on Lucas sequences and on elliptic curves. The main focus is the way how some known attacks on RSA were extended to LUC, KMOV and Demytko’s system. It also gives some directions for the choice of the most appropriate RSA-type system for a given application.