No abstract

Due to the extreme exponential growth in internet usage, defending data from unauthorized users has become a major concern. Cryptography and Steganography are the two key methods for protecting our data during transmission. This research presents an adaptive video Steganography with three levels of security in extracting concealed information for sparing communication. The embedding occurs in the cover video frames’ (CVF) spatial domain. As a result of this strategy, the Hiding Ratio can reach upto 28.125% (2.25 bpp in terms of payload) without degrading video frame quality. Users can choose between partial or full embedding capacity of CVF when hiding secret data using the Adaptive Control Block (ACB) proposed. To produce highly sensitive initial seeds for Permutation Order (PO), Frame Selection (FS) and Random Position for Hiding (RPH), which are responsible for three levels of security, the proposed Chaotic Key Generator (CKG) combines a logistic map and sine map. Cover video frames (CVF) and hidden data (SD) to be transmitted are encrypted using PO. After encryption the encrypted CVFs are selected at random using FS for embedding. In the embedding procedure, Random Position for Hiding (RPH) is used. In order to transmit the stego-video frame, embedded CVFs are decrypted using the same PO. The results of the experiments show that the proposed approach is effective with an adaptive hiding ratio of 7.1–28.125% (0.56 to 2.25 bpp in terms of payload) and achieves a PSNR in the range of 50.2553dB to 62.0528dB.