Multistage Image Encryption using Rubik’s Cube for Secured Image Transmission
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Abstract
Steganography is a process of hiding one data behind an image. A text data or an image in one format is being hidden in other image or text data of the same format or of the different format. The data transmitted nowadays are being hacked easily by intruders, such that the purpose of secured transmission fails there. There are several traditional ways of transmitting data such as encryption, scrambling, watermarking, steganography, etc; the process of encryption involves changing data in one format to the other and transmitting. When the decryption method is known to the intruders then the data is easily available for them. Most of the encryption techniques are easy to predict. A new method for image encryption called multistage image encryption using Rubik’s cube method is,proposed in this paper.The image resolution doesn’t change much more and is negligible when a message is embededinto the image and the image is protected.
Keywords: Encryption, HVS (Human Visual System), LSB (Least Significant Bit), PSNR (Peak Signal Noise Ratio), Steganography, Rubik’s cube algorithm, NPCR (Number of Pixel Change Ratio).
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