International Journal of Engineering and Technology

Currently secure communication is a very challenging task. Cryptography is providing solution to this challenge. But cryptography highly depends on invertible mathematical functions. Mathematical stuff embedded with computer model brings the unbreakable cryptosystem. Many algorithms are proposed in the literature and they are having their own limitations. In this paper, an algorithm based on Hermitian theory to hide a text in an image is proposed. Properties of Hermitian theory reduce the complexity of sharing a dynamic key between a sender and a receiver. The efficiency and the flexibility of the proposed model is analyzed.