Enhanced Data Security Based on BPCS

Data Security is one of the most important factors for transferring important documents containing one's essential information. Internet is one of the widely used medium for such transfer to take place. Such secret documents consists of information about bank transfers, corporate communication etc. All this leads to the need for securing our data in order to prevent unauthorized access to systems, data, facilities, and networks. Steganography is a technique to hide secret information in some other data without any loss of information. There are several techniques of data hiding like text, audio, image, video etc but all these techniques have limited amount of data hiding capacity. All the existing image steganography technique having the limited percent of information hiding capacity, they can only hide 12-15% information of the vessel. Bit Plane Complexity Segmentation is a technique that provides near 50% of data hiding capacity. The most important aspect of BPCS-Steganography is that the embedding capacity is very large. In comparison to simple image based steganography which uses solely the least important bit of data, and thus (for a 24-bit color image) can only embed data equivalent to 1/8 of the total size, BPCS-Steganography uses multiple bit-planes, and so can embed a much higher amount of data, though this is dependent on the individual image. The aim of the existing system is replace the frequency component of the image of replace the LSB bit of the image into the secret information, but the main aim of the proposed system is to embed the secret data or information in the bit plane of the image.