Hybrid of asymmetric cryptography (RSA) and symmetric cryptography (OTP)

Khean Ouk¹ , Kimsoung Lim² , Sen Samnang Ouk³

Section:Research Paper, Product Type: Journal-Paper
Vol.8 , Issue.6 , pp.22-27, Dec-2020

Online published on Dec 31, 2020

Copyright © Khean Ouk, Kimsoung Lim, Sen Samnang Ouk . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Cryptography is a science-art that makes communication and messages more secure on the communication media, especially for state security, and business security and personal security. In the industrial revolution 4.0, security is a key to make communication more secure and the integrity and availability of data. The combination of symmetric cryptography and symmetric cryptography, symmetric cryptography and asymmetric cryptography, asymmetric cryptography and asymmetric cryptography is the main subjective to concern on security today. One of those combinations is a hybrid algorithm which is made up of asymmetric cryptography (RSA) and symmetric cryptography (OTP). It will strengthen the secureness of communication and data. This study will propose an Algorithm scheme to increase the security of cryptography. The result of the hybrid Algorithm shows steps to encrypt and decrypt the message: First of all, the sender encrypts the block of a message with the RSA public key and then generates the OTP key to encrypt this block of message again to obtain the double ciphertext from the same plaintext and then send it to the receiver. Finally, the receiver decrypts it with the OTP key and then the RSA private key. Therefore, we can say that the security of this proposed hybrid algorithm is more highly secured and guaranteed because of covering the weakness of the RSA cryptography. In conclusion, Section V describes the hybrid algorithm is highly secured and unbreakable.

Key-Words / Index Term :
Cryptography, RSA, One Time Pad, Hybrid Algorithm, Symmetric Cryptography, Asymmetric Cryptography, Double cipher text

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