Parameter Sensitivity Test and Audio Encryption Scheme Design for Multimedia Information Security
Ming Yin, Shi Tang · International Journal of Digital Multimedia Broadcasting · 2026
With the continuous development of information technology, multimedia information faces many security threats. To realize efficient multimedia information processing under the premise of guaranteeing information security, this research analyzes and extracts the parameters of different kinds of information in view of the fact that each of them has unique attributes and complex structures. The study discusses in depth the encryption technology and confidentiality system of multimedia information. On this basis, the study analyzes the coding format, changes the signal‐to‐noise ratio and sampling frequency, and performs a balance test on the parameters according to the changes in audio quality for multimedia audio, which is a representative type of multimedia information. The parameters that pass the test are screened as sensitive audio frames, and the encryption scheme based on the parameter sensitivity test is designed. The experimental results revealed that the variation of the peak signal‐to‐noise ratio of the three types of audio after encryption ranged from 0 to 25 dB. The average audio encryption elapsed time was shortened by 5.3%, 6.2%, and 10.4%, respectively, compared to the traditional method. The encryption time share of Horn, Inst, Popm, and Bass did not exceed 5% overall. The results indicated that the designed multimedia information encryption scheme based on parameter sensitivity was effective in securing multimedia information and improving encryption efficiency. The research results have guiding significance for the security control of multimedia information.