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Hybrid encryption using playfair and RSA cryptosystems | ||
| International Journal of Nonlinear Analysis and Applications | ||
| دوره 12، شماره 2، بهمن 2021، صفحه 2345-2350 اصل مقاله (299.98 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/ijnaa.2021.5379 | ||
| نویسندگان | ||
| Raghad K. Salih* ؛ Madeha Sh. Yousif | ||
| Department of Applied Sciences, Mathematics and Computer Applications, University of Technology, Baghdad, Iraq | ||
| تاریخ دریافت: 02 فروردین 1400، تاریخ بازنگری: 20 خرداد 1400، تاریخ پذیرش: 16 تیر 1400 | ||
| چکیده | ||
| The security is demanded to transport important data over the network. In this work a hybrid encryption depending on playfair cipher and RSA algorithm is proposed to give more confidentially and get rid of the defects of the two methods. The first cipher text is obtained by playfair cipher by using (812) expanded key matrix that is filled by decimal ASCII characters of Alphabets, numbers and common characters of ASCII table while the final cipher text is obtained by RSA cryptosystem by applying it for blocks of two characters. The proposed hybrid encryption avoids to take large numbers in RSA algorithm and performs complex operations that need a long time to do. The proposed hybrid cipher is tight security that is difficult to analyze and detect from hackers and intruders. | ||
| کلیدواژه‌ها | ||
| Playfair؛ RSA algorithm؛ ASCII and Hybrid encryption | ||
| مراجع | ||
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[1] M.A. Islam, N. Islam and B. Shabnam, A modified and secured RSA public key cryptosystem based on ”n” prime numbers, J. Comput. Commun. 6 (2018) 78. [2] S.Y. Kayode and G.K. Alagbe, An Improved RSA Cryptosystem Based on Thread and CRT, e-Academia J. 6 (2017). [3] A.C. Licayan, B.D. Gerardo and A.A. Hernandez, Enhancing playfair cipher using Seed based color substitution, 16th IEEE Int. Colloq. Signal Proc. Appl. 2020, pp. 242-246. [4] P. Pal, G.S. Thejas, S.K. Ramani, S.S. Iyengar and N.R. Sunitha, A variation in the working of playfair cipher, In IEEE 4th Int. Conf. Comput. Syst. Inf. Tech. Sust. Solution, India, 2019. [5] S.S. Shireen, B.M. Krishna, K.N.L. Prasanna and A.P.C. Reddy, FPGA based RSA authenticated data hiding in image through steganography, Int. J. Innov. Tech. Explor. Engin. 8(4) (2019) 550–554. [6] R.S. Villafuerte, A. M. Sison, A. A. Hernandez and R. P. Medina, Randomness Evaluation of the Improved 3D-Playfair (i3D) Cipher Algorithm, 12th Int. Conf. Commun. Software Networks 2020, pp. 240–245. [7] M.S. Yousif, R.K.Salih and N.M.G. Alsaidi, A new modified playfair cipher, AIP Conf. Proc. 2019 | ||
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