Zigbee based Image Transfer using Steganography

In There has been an abundance in media communication thanks to the advancements in the semiconductor technology and telecommunication services worldwide. We indulge into some type of image and video transfer almost on a daily basis. The security of the digital images over communication media, hence becomes one of the important aspects. Cryptography provides a solution to this problem. However, cryptography requires more processing power and memory. Lightweight cryptography another version of cryptography was suggested in constrained environments such as RFID tags, sensors, contactless smart cars and healthcare devices. It had the disadvantage that the sensitive information is in unreadable format, attackers may still be able to uncover or decrypt it with sufficient time or processing power. As an alternative, steganography, which hides the secret message i.e. image inside the cover image can be used as an alternative security mechanism for transferring the data in a secure manner. Several image steganography techniques have been used on low processing power devices, such as embedded devices and mobile phones for hiding the data. As well as, is a method to make confidential information and messages undetectable and prevent hackers from detecting them, thus preferable over cryptography based techniques. In this research work, a steganography based method to transfer images securely across a Zigbee transceiver complying IEEE 805.14 WPAN standards has been implemented. The steganography technique used for this research work is a modified Least Significant Bit technique.