Abstract
Computer usage is increasing, for both social and business areas, and it will continue to do so. This naturally leads to an increase in the way in which we as individuals and organizations we work for may be attacked.Increase of cyber-crime has compelledto re-think for a secure communication medium in our day-to-day life. Protecting the information during transmission is a foremostchallenge against eavesdroppers. Encryption is one of the widely used techniques that ensure the security of the message. However, sending encrypted messages often draw eavesdropper芒聙聶s attention. Steganography is a method of letteringsecret messages in a way that nobody except for the sender and the recipient would suspect the existence of the hidden message. In other words, it芒聙聶s an art/science of hiding messages. Steganography is often combined with cryptography so that even if the message is discovered it cannot be read.Historical steganography involved techniques such as disappearing ink or microdots. Modern steganography involves in computer files such as images, audio, video files and even in text documents. However, each stereographic technique is focused in just one medium; such as image or audio file and etc. And each steganographic algorithms had independent implementation; as a resultthere is no generic framework or application that will produce stegano medium for an end-user. In this paper, a generic framework is presented, which provides generic steganographic functionality via well-defined Application Programming Interface (API). So that the advanced developers can develop framework modules, this can be used by the end-users directly as stegangraphicapplication. And also this paper describes a newly invented steganographic technique which utilizes the inter-character spacing of a Rich-Text-Format (RTF) document. This technique can be used to transmit concealed messages in multi-language or combination of languages, which can be represented in Unicode. As an additional optimization technique; user defined code based (UDC) technique is also proposed to achieve compression of Unicode languages. Another advantage is that this technique can be used to send multi different language secret messages through the communication channel.
Highlights
Over the last few years, the usage of internet has been dramatically increased from youngsters to an expert
The common question from any computer user would be ‘How securely a message can be sent over the internet?’ The level of security required by the user may vary from very low to a very high
A common steganographic framework is presented in this research paper is useful for both an end-user as well as the developer.The prototype application demonstrates how flexible it is for an end-user to generate a stegno medium
Summary
Over the last few years, the usage of internet has been dramatically increased from youngsters to an expert. The first recorded uses of steganography can be traced back to 440 BC, when Herodotus mentions two examples of steganography in The Histories of Herodotus.Demaratus sent a warning about a forthcoming attack to Greece by writing it directly on the wooden backing of a wax tablet before applying its beeswax surface[1], and this believed to be where the steganography had started. From the day it started, steganography is performed on images, multimedia files, and text, word and PDF files. In the proposed framework, it supports multi languages (mixture of languages that can be used in a single message)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
