A Study of Encryption for Multimedia Digital Audio Security

Driven by the development of multimedia, encryption multimedia digital audio has received more attention; however, cryptography-based methods have many shortcomings in information, and new are urgently needed. This paper briefly introduced cryptography chaos theory, designed a chaos-based algorithm that combined Logistic mapping Sine for confusion used Hopfield neural network diffusion, explained decryption process algorithm, tested algorithm. It was found keys obtained proposed passed SP800-22 test, correlation between three encrypted original 0.0261, -0.0536, 0.0237, respectively, all which were small, peak signal-to-noise ratio (PSNR) values -0.348 dB, -7.645 -3.636 significantly different from audio. The NSCR UACI also closer to values. results prove good security can encrypt actual