Using Hadamard transform for cryptanalysis of pseudo-random generators in stream ciphers

Abstract

In this work we discuss results obtained from an application of the Hadamard transform to cryptanalysis, andin particular, we determine the probability to decipher different pseudo-random number generators used ascomponents of stream ciphers. Also, we found a relationship between entropy and Hadamard’s values.

Keywords

• pseudo-random generators
• hadamard transform
• stream ciphers
• entropy