Design and smartphone implementation of chaotic duplex H.264-codec video communications

Chen, Baoju and Yu, Simin and Zhang, Zeqing and Li, David Day-Uei and Lü, Jinhu (2021) Design and smartphone implementation of chaotic duplex H.264-codec video communications. International Journal of Bifurcation and Chaos, 31 (3). 2150045. ISSN 0218-1274

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    Abstract

    In this paper, a chaotic duplex H.264-codec-based secure video communication scheme is designed and its smartphone implementation is also carried out. First, an improved self- synchronous chaotic stream cipher algorithm equipped with a sinusoidal modulation, a multipli- cation, a modulo operation and a round down operation (SCSCA-SMMR) is developed. Using the sinusoidal modulation and multiplication, the improved algorithm can resist the divide-and- conquer attack by traversing multiple nonzero component initial conditions (DCA-TMNCIC). Meanwhile, also by means of the round down operation and modulo operation, on the premise that the DCA-TMNCIC does not work, the original keys cannot be further deciphered only by the known-plaintext attack, the chosen-plaintext attack and the chosen-ciphertext attack, respectively. Then, the Android low-level multimedia support infrastructure MediaCodec class is used to access low-level media encoder/decoder components and the H.264 hardware encod- ing/decoding is performed on real-time videos, so the chaotic video encryption and decryption can be realized in real-time by smartphones. Security analysis and smartphone experimental results verify the effectiveness of the proposed method.

    ORCID iDs

    Chen, Baoju, Yu, Simin, Zhang, Zeqing, Li, David Day-Uei ORCID logoORCID: https://orcid.org/0000-0002-6401-4263 and Lü, Jinhu;