Secure Message Transmission using Caesar Cipher and Residue Number System
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Date
2022-06-01
Journal Title
Journal ISSN
Volume Title
Publisher
African Scholars Journal of Science Innovation & Tech. Research
Abstract
Secure communication across a digital medium is ensured by data security. The
data should be guided against availability by unrecognised users and
communicated to the right recipient in a secure and confidential manner.
Although the cipher text can make data difficult for a third party to interpret, the
irregular representation given to it acts as a means of drawing an attacker's
attention to such data. As a result, through the design of a character swap table
to swap characters to numbers and the use of RNS to convert the numbers to
residues, this research proposes a scheme that integrates additional phases to the
standard Caesar cipher. The proposed system was able to generate the cipher text
as residues, ensuring that the message remains undetectable and difficult to crack.