计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2015年
2期
290-295
,共6页
信息隐写%HOOK机制%隐写模型%即时通信%LPC系数
信息隱寫%HOOK機製%隱寫模型%即時通信%LPC繫數
신식은사%HOOK궤제%은사모형%즉시통신%LPC계수
steganography%HOOK mechanism%steganography model%instant communication%LPC coefficient
提出一种采用HOOK机制实现以即时通信语音流为隐藏载体的隐写模型，在通信软件的发送端挂接两个“钩子”，采集即时通信语音流作为载体进行实时机密信息嵌入与提取，实现交互式的隐蔽通信过程。选择目前普遍使用的Google talk软件作为研究对象，重点研究Gtalk的iSAC语音编码的隐写方法，建立一种基于LPC参数量化的隐写算法，实现iSAC语音编码下的隐写方法。实验结果表明，该隐写模型适用于目前的即时通信软件的隐蔽通信，拓展了基于VoIP的信息隐写的应用范围；该隐写算法具有良好的隐写容量和隐写速率。
提齣一種採用HOOK機製實現以即時通信語音流為隱藏載體的隱寫模型，在通信軟件的髮送耑掛接兩箇“鉤子”，採集即時通信語音流作為載體進行實時機密信息嵌入與提取，實現交互式的隱蔽通信過程。選擇目前普遍使用的Google talk軟件作為研究對象，重點研究Gtalk的iSAC語音編碼的隱寫方法，建立一種基于LPC參數量化的隱寫算法，實現iSAC語音編碼下的隱寫方法。實驗結果錶明，該隱寫模型適用于目前的即時通信軟件的隱蔽通信，拓展瞭基于VoIP的信息隱寫的應用範圍；該隱寫算法具有良好的隱寫容量和隱寫速率。
제출일충채용HOOK궤제실현이즉시통신어음류위은장재체적은사모형，재통신연건적발송단괘접량개“구자”，채집즉시통신어음류작위재체진행실시궤밀신식감입여제취，실현교호식적은폐통신과정。선택목전보편사용적Google talk연건작위연구대상，중점연구Gtalk적iSAC어음편마적은사방법，건립일충기우LPC삼수양화적은사산법，실현iSAC어음편마하적은사방법。실험결과표명，해은사모형괄용우목전적즉시통신연건적은폐통신，탁전료기우VoIP적신식은사적응용범위；해은사산법구유량호적은사용량화은사속솔。
A steganographic model using HOOK mechanism to achieve instant communication speech stream for hiding carrier was presented.Two“HOOK”were hung in the sender,and the speech stream was collected as hiding carrier for real-time em-bedding and extracting,thus the interactive covert communication was realized.The Google talk software currently used was se-lected as the research obj ect,and the steganographic method based on iSAC codec used in Gtalk was focused on.Hiding algo-rithm based on LPC parameters was established.Experimental results show that the proposed model can be applied to instant communication software that being commonly used,and extends the application range of information hiding based on VoIP.The LPC parameters hiding algorithm has a good hiding rate and better practicability.
