Підвищення стійкості шифрування інформації в оптико-електронних системах блочними шифрами на основі використання багаторівневих гніздових підстановочно-перестановочних мереж
This article contains cipher transformation that consists of linear and nonlinear layers. The linear layer is constructed with the usage of nested substitution-permutation network. The network consists of three levels: the low level, the middle level and the high level. Each of the levels uses maxim...
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| Date: | 2021 |
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| Main Authors: | , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Vinnytsia National Technical University
2021
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| Subjects: | |
| Online Access: | https://oeipt.vntu.edu.ua/index.php/oeipt/article/view/376 |
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| Journal Title: | Optoelectronic Information-Power Technologies |
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Optoelectronic Information-Power Technologies| Summary: | This article contains cipher transformation that consists of linear and nonlinear layers. The linear layer is constructed with the usage of nested substitution-permutation network. The network consists of three levels: the low level, the middle level and the high level. Each of the levels uses maximal distance codes. The increasing of number of active S-boxes for this transformation that are using this king of linear layer is proved. The variants of realization of the cipher transformation which uses substitution-permutation network for 8×8 and 16×16-bit S-boxes are considered. The variant of realization with the highest cryptography security is defined. |
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