基于改进混沌密码的音频信息隐藏算法研究  

Research on Embedded Audio Information Hiding Algorithm Based on Improved Chaotic Password

作　　者：赵家弘 尹萍[2] 

机构地区：[1]北京航天光华电子技术有限公司(航天九院200厂),北京100039 [2]北京佰能电气技术有限公司,北京100096

出　　处：《微电子学与计算机》2013年第5期141-144,148,共5页Microelectronics & Computer

摘　　要：基于混沌密码理论,提出一种新型加密方案.首先利用Arnold猫映射和3D-Lorenz混沌系统,通过改进算法产生混合混沌序列,再将其与明文信息运算产生密文信息,最后通过改进LSB信息隐藏算法将密文信息隐入音频载体.合法用户通过理想信道得到密钥和加密流程即可通过逆运算安全获得明文信息.经实验仿真证明,改进后的混沌序列完全满足各项密码学特性,整个系统能够安全、可靠地实现私密信息的网络传输.Based on the chaotic password theory,a new encryption method is brought forward.Firstly Arnold＇s cat mapping and 3D—Lorenz chaotic system are used by ameliorated algorithm to generate mixed chaotic sequences. Then the plaintext message is calculated with the sequences to generate the ciphertext message.Finally,the ciphertext is hided in audio carrier through improved LSB information hiding algorithm.The legal users can get the keys and the encryption workflow through the ideal channel.Then they can obtain the plaintext message in security by inverse operation.It is demonstrated by the simulation results that the improved chaotic sequences can completely meet the various cryptographic properties.And the whole system can realize the network transmission of private information safely and reliably.

关 键 词：混沌密码 信息隐藏 音频信息处理 网络通信 

分 类 号：TN918.1[电子电信—通信与信息系统]