For the first time Boolean functions on 9 variables having nonlinearity 241 are discovered, that remained as an open question in literature for almost three decades. Such functions are found by… (More)

Recently, 9-variable Boolean functions having nonl inearity 241, which is strictly greater than the bent concat en ion bound of 240, have been discovered in the class of Rotation Symme tric Boolean… (More)

For the first time we find Boolean functions on 9 variables having nonlinearity 241, that remained as an open question in literature for almost three decades. Such functions are discovered using a… (More)

The existence of 9-variable Boolean functions having nonlinearity strictly greater than 240 has been shown very recently (May 2006) by Kavut, Maitra and Yücel. The functions with nonlinearity 241… (More)

We compare one round diffusion characteristics of the block cipher Spectr-H64 to those of AES-Rijndael and Safer K-64, in terms of the Avalanche Weight Distribution (AWD) criterion and observe a… (More)

In this letter, the algorithm given by Rouanne and Costello for the computation of the distance spectrum is improved for trellis-coded modulation schemes having uncoded bits, i.e., for trellis… (More)