Abstract
This study deals with constructing and implementing new algorithm based on hiding a large amount of data (image, audio, text) file into color BMP image. We have been used adaptive image filtering and adaptive image segmentation with bits replacement on the appropriate pixels. These pixels are selected randomly rather than sequentially by using new concept defined by main cases with their sub cases for each byte in one pixel. This concept based on both visual and statistical. According to the steps of design, we have been concluded 16 main cases with their sub cases that cover all aspects of the input data into color bitmap image. High security layers have been proposed through three layers to make it difficult to break through the encryption of the input data and confuse steganalysis too. Our results against statistical and visual attacks are discussed and make comparison with the previous Steganography algorithms like S-Tools. We show that our algorithm can embed efficiently a large amount of data that has been reached to 75% of the image size with high quality of the output.
Highlights
Steganography is an art and science of information hiding and invisible communication
Confidence in the present results is gained by comparing of the results obtained from the present Steganography algorithm with those previously published in the literatures[1,2,3, 5, 6, 9,11]
Specifications of a good Steganography algorithms on a bitmap image are depend on the following points: 1. Comparison between the present work and the previous work
Summary
Steganography is an art and science of information hiding and invisible communication. It’s unlike cryptography, where the goal is to secure communications from an eavesdropper by make the data not understood, steganography techniques strive to hide the very presence of the message itself from an observer so there is no knowledge of the existence of the message in the first place. In some situations, sending encrypted information will arouse suspicion while invisible information will not do so[1]. Both sciences can be combined to produce better protection of the information. In this case, when the steganography fails and the message can not be detected if a cryptography technique is used too. Hiding information inside images is a popular technique nowadays. An image with a secret message inside can be spread over the World Wide Web or in a news groups
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