Abstract
This paper introduces a novel method based on auxiliary matrix to hide a text data in an RGB plane. To hide the data in RGB planes of image via scanning, encryption and decryption. To enhance the security, the scanning technique combines two different traversals – spiral and snake traversal. The encryption algorithm involves auxiliary matrix as a payload and consider the least significant bits of three planes. To embed the text message would in the form of ASCII values which are similar to the red plane values and least significant value of pixels in blue plane marks the position of pixels. The least significant bit of boundary values of green-plane signifies the message. These three planes are recombined to form the stego-image, to decrypt the message with the help of scanning in the red-plane and blue plane and green plane simultaneously. Performance evaluation is done using PSNR, MSE and entropy calculation and generated results are compared with some earlier proposed work to present its efficiency with respect to others.
Highlights
Steganography is the process to conceal a message or data in an image which is not detectable by human visual system
Some of the most popular techniques that have already been discussed in this field in the past years are adaptive data hiding in edge areas of images with spatial lsb domain systems [2], reversible data hiding using integer wavelet transform and campanding technique[3], robust image-adaptive data hiding using erasure and error correction [4], reverse data hiding [5] and many more
If any pixel intensity in red plane is matched with ASCII value, its position is marked in LSB of blue plane using the method in step 3
Summary
Steganography is the process to conceal a message or data in an image which is not detectable by human visual system. Unlike cryptography transform the message into another form and hide in an image and passed over the attack prone network to the receiver; it is more secure, as the existence of the message embedded in the image is concealed [1]. Steganography is very useful and commercially important application in the digital world for example digital watermarking. In this application, to ensure the integrity or authenticity of intellectual property or product, owner can embed the message hidden in the file. To ensure the integrity or authenticity of intellectual property or product, owner can embed the message hidden in the file This kind of mechanism is used by intelligence agencies for secret works [6]
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