A robust secret data sharing through coverless video steganography based on average DC coefficient on bit plane segmentation

Recently, coverless steganography has been gaining popularity in confidential information-hiding techniques due to its resistance to the detection of steganalysis. Whereas most coverless approaches are based on images as the transmission medium, few articles are based on video in coverless steganography. Whereas the hiding capacity per frame in the existing scheme is less, and to improve the capacity, a new secret data sharing through coverless video steganography is proposed based on the average Direct Current (DC) coefficient on the Bit plane. The bit planes are extracted from the video frame, generating multiple hash sequences from each bit plane. The bit plane is further partitioned into blocks. The average DC coefficient of consecutive subblocks within a block in a bit plane frame is compared to create the hash bit sequences. A video index database is created to store the generated hash sequences for easy retrieval. The receiver successfully recovered the secret information from the retrieval information and received videos. The observed findings show that the suggested method outperforms recent coverless video steganography techniques. The robustness is substantially stronger and superior to other existing schemes.