Secured Communication through Fibonacci Numbers and Unicode Symbols
A. Joseph Raphael, Vandana Sundaram · 2012
The objective of cryptography is to make it feasible for two persons to exchange a message in such a way that other persons cannot understand. There is no end to the number of ways this can be done, but here the proposed method will be more concerned with a technique of encoding the text in such a way that the recipient can only discover the original message. The original message usually called plain text is converted into cipher text by finding each character in the message and replacing it with another character based on the Fibonacci number generated. Further cipher text is converted into Unicode symbols, which avoid suspicion from the third party when send through an unsecured communication channel. There are two levels in the proposed method; (i) converting plain text to cipher text and (ii) converting cipher text to Unicode symbols. In each level, security key is used to encode the original message which provides two levels of security from intruders. On the other end, the extraction algorithm is designed in such a way that the process converts the Unicode symbols into cipher text and then cipher text to plain text. This encoding and decoding scheme of the proposed method is significantly different as compared to the traditional methods.