Implementation and Analysis of Email Messages Encryption and Image Steganography Schemes for Image Authentication and Verification
Modugula Siva Jyothi, S Madhusudhan Verma, C.Uma Shanker · International Journal of Computer Applications · 2010
Image Steganography is to hide messages or information within other information in such a way as to not be detectable.This makes use of the fact that there is a large amount of data being transferred every second, making it impossible to scan all the information for hidden messages.Typical cryptographic methods obscure the information, but it is still very obvious that a message is being sent.Steganography attempts to correct this flaw so an observer is unable to know if a message is being sent or not.This can be used in addition to traditional cryptographic methods, so the security will only be enhanced, assuming that the traditional methods are being used with the same rigor as before.Steganography in images is each pixel is encoded as a series of numbers which represent the red green and blue values which make up the color for that pixel.Since a slight change in this color scheme is not detectable by the human eye, it can be used to hide information.This is usually accomplished by changing the least significant bit, or LSB, for each pixel to correspond to the bits of the hidden message General