The Performance of Cover Image Steganography for Hidden Information within Image File using Least Significant bit algorithm
Eakbodin Gedkhaw, Nantinee Soodtoetong, Mahasak Ketcham · 2018
The Protection of information with steganography is the art and science of writing hidden is a hidden data method in various data type to conceal data and unauthorized person or attacker does not know these messages are camouflage. Moreover, we can send text or image was concealed by cover image and adjust some bits of the original to the receiver. The text or image file concealed within cover image can secure the original data from the attacker. In this paper, we studied the performance of the optimal file size to camouflage and the hidden data method with cover image using Least Significant bit (LSB). The dataset are text file (.txt), document File (.doc) and image file which have dimension as follow; 800×600, 1200×900, 1600×1200, 2000×1500, 2400×1800, 2800×2100, 3200×2400, 3600×2700 and 4000×3000 The image file sizes are 576KB, 1.14MB, 1.85MB, 2.66MB, 3.58MB, 4.57MB, 5.54MB, 6.46MB and 7.31MB respectively, that used as cover image which was concealed and decrypted from Stego image to plaintext. The result showed that the cover image size is 576 KB is the optimal file for hidden data 175 KB or 30% of the cover image. The cover image size is 4.57 MB is the optimal file for hidden data 2.10 MB or 45.95% of the cover image. And the cover image size is 7.31 MB which dimension is 4000*3000 can camouflage file up to 4.29 MB or 58.69% of the cover image. Therefore, the larger cover image can hidden larger text file up to size of cover image vary to the size of cover image that used for hidden data.