Image Steganography Technique based on Lorenz Chaotic System and Bloom Filter

Abstract

Steganography is the study of invisible communication, which typically focuses on methods of concealing the existence of the communicated message. Steganography is now widely used as a means of protecting sensitive data. In addition, one of the most common methods of information hiding is the Least Significant Bit (LSB) technique. This technique is extremely vulnerable to statistical attacks which are still challenging. This article presents a new method by using Lorenz’s chaotic system to generate a series of pseudo-random positions for embedding secret information within the cover image. Moreover, the Bloom filter is suggested to be used to prevent repetition and storage in the same pixel as well as data loss. The similarity metric results show how powerful and secure the proposed method is against both visual and analytical attacks, with a PSNR of 48.57% and a NPCR of 32.35%.