Image Stegnography


Category: Image Processing projects

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As there is large advancements in internet technology, there has been huge text as well as multimedia data transfer over the internet. Due to this data security is a vital necessity. Steganography and Cryptography are the sets of techniques to provide security to data. Steganography is an art of hiding secret information into another cover medium like image, etc. Cryptography is an art of converting plain data into unreadable format. Steganography can be integrated with Cryptography in order to enhance the security of data in communication. In this paper, a new method is proposed to provide security to  color images, by integrating Steganography and Cryptography. In this method, randomized LSB based method is used to hide an image in another image. The resulting stego image is then encrypted using AES algorithm. This new integrated method ensures the enhancement in the data hiding capacity, the security of the image and lossless recovery of the secret data.


Secure communication is when two entities are communicating and do not want a third party to listen in. For that they need to communicate in a way not susceptible to eavesdropping or interception.

Secure communication over insecure channels such as the Internet has been a hotspot in the research field since the beginning of the digital age. With the continuous evolvement of symmetric and asymmetric key cryptography, data communication over the Internet can be made secure and private.

For many years it has been considered that security in cryptographic algorithms is directly related to the complexity of the mathematical operations that define the core of the encoding process. However, research using hardware-aided reverse engineering has continuously demonstrated that every cryptographic algorithm has a relatively short lifecycle, defined by the evolvement of computational power. A secure communication system is reliable as long as the cryptographic algorithm on top of which it was built is reliable

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