METHODS OF ENCRYPTION BASED ON PERMUTATION UNITS WITH VARIABLE LENGTH

Authors

  • Володимир Андрійович Лужецький Vinnytsia National Technical University
  • Іван Сергійович Горбенко Vinnytsia National Technical University

DOI:

https://doi.org/10.18372/2410-7840.17.8794

Keywords:

permutation, variable length blocks, openmessage, ciphertext, pseudorandom numbers generator.

Abstract

One of the main operations performed by the block ciphersregardless to their architecture is permutation.Modern block ciphers perform permutation operationonly inside a separate block or small group of blocks. Inone of the previous articles the method of pseudorandompermutation of blocks inside the entire message was offeredbut modern block ciphers have fixed block lengthso even after permutation the beginning and endingblocks positions remain known. To increase the cryptographicstrength fragmentation the message to variablelength blocks is offered. Ciphering methods based onvariable length blocks permutation were developed, recommendationsconcerning blocks length quantity andtheir range were produced, the rules of pseudorandomblocks length values generating were offered and compared from cryptographic strength providing point ofview.

Author Biographies

Володимир Андрійович Лужецький, Vinnytsia National Technical University

Doctor of Technical Sciences,Professor, Head of Information Security Academic Departmant,Vinnytsia National Technical University.

Іван Сергійович Горбенко, Vinnytsia National Technical University

Postgraduate student Information SecurityAcademic Departmant, Vinnytsia National TechnicalUniversity.

References

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Published

2015-06-08

Issue

Vol. 17 No. 2 (2015)

Section

Articles

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