Blockchain enabled dual level security scheme with spiral shuffling and hashing technique for secret video transmission

In the modern digital era, data is considered to be the most valuable asset. Multimedia data includes audio, image and video forms which grabs attention and vulnerable for hacking. Transmission of multimedia data in open network is always unsecure. In this research paper, a novel method to transmit secret video is proposed. First, keyframes are detected by processing the ROI (region of interest) to classify segments. Spiral Shuffling and SHA512 hashing technique are applied to build the cipher blocks. Blockchain technique enhances strength of the Dual Level (Crypto-Stegano) Security Scheme. Discrete cosine transformation with normalization is applied to embed cipher blocks in audio files without any traces of hidden data. Combining the major security techniques such as Cryptography, Steganography and Blockchain enhances the strength of the proposed BDLSS (Blockchain enabled Dual Level Security Scheme). Experimental analysis is carried out with PSNR, SSIM, MSE, NPCR and Correlation coefficient values to prove the efficiency and the proposed method outperforms well over existing methods.