GOOD PERFORMANCE IMAGES ENCRYPTION USING SELECTIVE BIT T-DES ON INVERTED LSB STEGANOGRAPHY

Keywords: Cryptography, T-DES, Steganography, LSB, images

Abstract

Transmitting image through the internet needs to be secured because of risk to be stolen. Security techniques that can be used for securing data especially image are cryptography and steganography. Combine these techniques can provide double protection in image security. In this research, we proposed the used of T-DES encryption with a selective bit to improve the time performance because time aspect is one of the important aspects of data transmission process. Four MSB of the secret image will be selected, then it will be encrypted using T-DES. After that, this encrypted results will be combined with other 4 LSB. This encryption scheme result will be embedded into a cover image using inverted LSB because inverted LSB can produce high imperceptible value. From 6 testing images which encrypted using proposed scheme present that proposed encryption scheme is twice faster than classic triple DES and slightly faster than double DES. While the embedding scheme can produce PSNR value above 40 dB with the range between 51 dB to 61 dB as well as SSIM which close to 1. This result denoted that proposed scheme generated good quality of stego images.

Author Biography

Christy Atika Sari, Dian Nuswantoro University
I am graduated my Bachelor's degree in 2009 from Univresitas Dian Nuswantoro and my Master's Degree in 2012 from University Teknikal Malaysia Melaka and Universitas Dian Nuswantoro Semarang. Currently, I am lecturer in Universitas Dian Nuswantoro Semarang Indonesia since 2012 and very interesting with image processing and data hiding.
Published
2019-03-01