Abstract and keywords
Abstract (English):
This article describes a comparison of encryption algorithms based on the construction of the Feistel cipher, increasing its efficiency using a quatemionic involutive matrix. Bringing the results of the test of chances.

Keywords:
cryptography, Feistel method, encryption, decryption, quaternion involutive matrix
Text
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References

1. Sastry V. U. K, Anup Kumar K., A Modified Feistel Cipher Involving ModularArithmetic Addition and Modular Arithmetic Inverse of a Key Matrix. (I.TACSA) International Journal of Advanced Computer Science and Applications, Vol. 3,No. 7,2012, pp. 40-43.

2. Duhnich E.I., Demshcenko D.A. Modifikaciya shifra Feystelya s involyutivnoy kvaternionnoy matricey // Vestnik GMU im. admirala F.F. Ushakova,-2020. -№3 (32).-S.92-96.

3. Mariusz Dzwonkowski, Michal Papaj, and Roman Rykaczewski. A New Quaternion-Based Encryption Method for DICOM Images. IEEE Transactionsonimageprocessing, vol. 24, no. 11, November 2015, pp. 4614-4622.

4. Klyucharev P.G. O staticheskom testirovanii blochnyh shifrov. // Matematika i matematicheskoe modelirovanie - 2018 - №5 - S. 35-36.

5. https://webhome.phy.duke.edu/~rgb/General/dieharder.php

6. https://www.cryptool.org/en/


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