Image Steganography using Least Significant Bit algorithm

Computer Science Engineering, Cryptography, Security, Encryption, Steganography

Steganography is the technique of hiding private or sensitive information within something that appears to be nothing but a usual image. Steganography involves hiding text messages, so it appears that to be a normal image. This system lets a user upload an image and enter the text to send secretly, and gives a key or a pass word to lock the text. User then sends the image and key to the receiver and receiver first opens the image, and then he enters the key or password for decryption of text, he then presses decrypt to get secret text from the sender. If sender sends this image in public, others will not know what is it, and it will be only be received by receiver with the key to decrypt it. The objective of this project is to develop a secure path for sending or receiving secret text messages. The one that is implemented here is a variation of plain LSB (Least Significant Bit) algorithm. The text message is encrypted and sent to receiver very securely. The system uses AES encryption to encrypt the user’s secret text message and key information while sending it to receiver. Also Diffie-Hellman key generation is used for sharing secret key between sender and receiver.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.