### Abstract

In the SPN (Substitution-Permutation Network) structure, it is very important to design a diffusion layer to construct a secure block cipher against differential cryptanalysis and linear cryptanalysis. The purpose of this work is to prove that the SPN structure with a maximal diffusion layer provides a provable security against differential cryptanalysis and linear cryptanalysis in the sense that the probability of each differential (respectively linear hull) is bounded by p^{n} (respectively q^{n}), where p (respectively q) is the maximum differential (respectively liner hull) probability of n S-boxes used in the substitution layer.We will also give a provable security for the SPN structure with a semi-maximal diffusion layer against differential cryptanalysis and linear cryptanalysis.

Original language | English |
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Title of host publication | Fast Software Encryption - 7th International Workshop, FSE 2000, Proceedings |

Publisher | Springer Verlag |

Pages | 273-283 |

Number of pages | 11 |

Volume | 1978 |

ISBN (Print) | 9783540447061 |

Publication status | Published - 2001 |

Event | 7th International Workshop on Fast Software Encryption, FSE 2000 - New York, United States Duration: 2000 Apr 10 → 2000 Apr 12 |

### Publication series

Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 1978 |

ISSN (Print) | 03029743 |

ISSN (Electronic) | 16113349 |

### Other

Other | 7th International Workshop on Fast Software Encryption, FSE 2000 |
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Country | United States |

City | New York |

Period | 00/4/10 → 00/4/12 |

### ASJC Scopus subject areas

- Computer Science(all)
- Theoretical Computer Science

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## Cite this

*Fast Software Encryption - 7th International Workshop, FSE 2000, Proceedings*(Vol. 1978, pp. 273-283). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 1978). Springer Verlag.