基于PSTN的文件隐传系统的算法设计  

Design of File Hidden Transmission System Algorithm Based on PSTN

作　　者：顾卫东[1] 郝秋赟[1] 李晔[1] 樊燕红[1] 马晓凤[1] 姜竞赛[1] 

机构地区：[1]山东省计算中心山东省计算机网络重点实验室,山东济南250101

出　　处：《电声技术》2013年第3期54-57,共4页Audio Engineering

基　　金：山东省自然科学基金项目(ZR2010FQ018)

摘　　要：针对PSTN的应用环境设计出一种能在PSTN上实时传输密文信息的语音隐写算法。结合电话信道的特殊性,把语音信号由时域转为频域,选取合适的频带范围并分段,通过一定的嵌入和提取规则,并运用同步技术,保证安全传输密文信息和正确恢复密文信息。通过PSTN环境测试,此算法能保证误码率为0。According to the application environment of PSTN, a speech steganography algorithm of real -time trans- mission of Ciphertext information on the PSTN is designed. Combined of telephone channel specificity, the speech sig- nal is converted from the time domain into frequency domain, the appropriate frequency range is selected and seg- mented. By bedding and extraction rules, and using of synchronous technology, secure transmission of the cipher- text information and correctly restore ciphertext is ensured. Through PSTN environmental testing, this algorithm can guarantee that the error rate is O.

关 键 词：PSTN 文件隐传系统 嵌入算法 提取算法 同步算法 

分 类 号：TN912[电子电信—通信与信息系统]