Investigations on bent and negabent functions via the nega-Hadamard transform P Stanica, S Gangopadhyay, A Chaturvedi, AK Gangopadhyay, S Maitra IEEE Transactions on information Theory 58 (6), 4064-4072, 2012 | 84 | 2012 |

Bent and generalized bent Boolean functions P Stănică, T Martinsen, S Gangopadhyay, BK Singh Designs, codes and cryptography 69 (1), 77-94, 2013 | 78 | 2013 |

On the lower bounds of the second order nonlinearities of some Boolean functions S Gangopadhyay, S Sarkar, R Telang Information Sciences 180 (2), 266-273, 2010 | 62 | 2010 |

A secure image encryption scheme based on a novel 2D sine–cosine cross-chaotic (SC3) map B Mondal, PK Behera, S Gangopadhyay Journal of Real-Time Image Processing 18 (1), 1-18, 2021 | 58 | 2021 |

On Latin squares of polynomially complete quasigroups and quasigroups generated by shifts V Artamonov, S Chakrabarti, S Gangopadhyay, S Pal Quasigroups and Related Systems 30 (2), 117-130, 2013 | 47 | 2013 |

Internal state recovery of grain-v1 employing normality order of the filter function MJ Mihaljević, S Gangopadhyay, G Paul, H Imai IET Information Security 6 (2), 55-64, 2012 | 45 | 2012 |

Generic cryptographic weakness of *k*-normal Boolean functions in certain stream ciphers and cryptanalysis of grain-128M Mihaljević, S Gangopadhyay, G Paul, H Imai Periodica Mathematica Hungarica 65 (2), 205-227, 2012 | 36 | 2012 |

Patterson–Wiedemann construction revisited S Gangopadhyay, PH Keskar, S Maitra Discrete mathematics 306 (14), 1540-1556, 2006 | 31 | 2006 |

A note on generalized bent criteria for Boolean functions S Gangopadhyay, E Pasalic, P Stănică IEEE transactions on information theory 59 (5), 3233-3236, 2012 | 27 | 2012 |

Nega–Hadamard transform, bent and negabent functions P Stănică, S Gangopadhyay, A Chaturvedi, AK Gangopadhyay, S Maitra Sequences and Their Applications–SETA 2010: 6th International Conference …, 2010 | 26 | 2010 |

Third-order nonlinearities of a subclass of Kasami functions R Gode, S Gangopadhyay Cryptography and Communications 2 (1), 69-83, 2010 | 25 | 2010 |

On second order nonlinearities of cubic monomial Boolean functions R Gode, S Gangopadhyay Cryptology ePrint Archive, 2009 | 23 | 2009 |

An improved hybrid genetic algorithm to construct balanced Boolean function with optimal cryptographic properties PK Behera, S Gangopadhyay Evolutionary Intelligence 15 (1), 639-653, 2022 | 22 | 2022 |

An Analysis of the 𝒞 Class of Bent Functions B Mandal, P Stănică, S Gangopadhyay, E Pasalic Fundamenta Informaticae 146 (3), 271-292, 2016 | 22 | 2016 |

A TMDTO attack against lizard S Maitra, N Sinha, A Siddhanti, R Anand, S Gangopadhyay IEEE Transactions on Computers 67 (5), 733-739, 2017 | 18 | 2017 |

On the second order nonlinearity of a cubic Maiorana-Mcfarland bent function S Sarkar, S Gangopadhyay Finite Fields and their Applications 2009, 2009 | 17 | 2009 |

A lower bound of the second–order nonlinearities of boolean bent functions M Garg, S Gangopadhyay Fundamenta Informaticae 111 (4), 413-422, 2011 | 16 | 2011 |

Evolving bijective S-Boxes using hybrid adaptive genetic algorithm with optimal cryptographic properties PK Behera, S Gangopadhyay Journal of Ambient Intelligence and Humanized Computing 14 (3), 1713-1730, 2023 | 13 | 2023 |

Affine inequivalence of cubic Maiorana–McFarland type bent functions S Gangopadhyay Discrete Applied Mathematics 161 (7-8), 1141-1146, 2013 | 12 | 2013 |

Some results concerning generalized bent functions P Stanica, S Gangopadhyay, BK Singh Cryptology ePrint Archive, 2011 | 12 | 2011 |