动态混沌加解密及其在VoIP中的应用

发布时间：2018-06-08 07:44

本文选题：加解密 + 网络语音传输　；参考：《计算机科学》2014年S2期

【摘要】：随着网络普及和带宽提升,网络语音传输已成为现实,但网络的开放性也给语音安全带来了巨大威胁。数据加密常被用来保证网络语音通信的安全,混沌序列的宽频谱、类随机、参数敏感等特点使其非常适合作为加解密密钥。为避免长时间使用固定混沌序列作为密钥带来的安全隐患,设计并实现了一种用于VoIP的动态混沌加解密方案,利用混沌密钥动态交换机制实现收发端混沌根密钥交换,由根密钥通过Henon映射、改进的Logistic映射及非线性置换随机生成混沌密钥,接收端根据接收到的根密钥先生成解密密钥,然后对语音密文进行解密。测试结果表明,该动态混沌加解密系统具有良好的保密效果,可用于网络语音保密通信中。
[Abstract]:With the popularization of the network and the enhancement of bandwidth, the network voice transmission has become a reality, but the openness of the network also poses a great threat to the voice security. Data encryption is often used to ensure the security of the network speech communication, the broadband spectrum of the chaotic sequence, the class random, the parameter sensitivity and so on make it very suitable as the encryption and decryption key. Using the fixed chaotic sequence as the security hidden danger brought by the key, a dynamic chaotic encryption and decryption scheme for VoIP is designed and implemented. The chaotic key exchange is realized by using the chaotic key dynamic exchange mechanism. The root key is mapped through the Henon, the improved Logistic mapping and the nonlinear permutation randomly generate the chaotic key, and then the chaotic key is generated by the nonlinear exchange. The receiver generates the decryption key based on the received root key, and then decrypts the speech cipher. The test results show that the dynamic chaotic encryption and decryption system has good security effect and can be used in the network speech secure communication.
【作者单位】：苏州理工学院;江苏科技大学电信学院;
【基金】：江苏高校优势学科项目船舶工业国防科技预研项目(10J3.5.2)资助
【分类号】：TN916.5;TN918.4

【参考文献】