International Journal of Applied Research on Information Technology and Computing

This paper provides a ciphering algorithm based on controlled random number generation for every printable character of a keyboard based on a pass key which depends upon a secured telephonic conversation and the starting time of the conversation. The random number sequence generated for each message is different. Several hash key functions based on a short function, squaring and Sine functions are then applied on the plain text in order to generate the cipher text. This tested program can be implemented for intra-office message communication. The objective of this paper will always resound for the development of a unique system which will ensure secrecy and authenticity for the private communication between two entities.