Secure Speech Secrete Transmission Based on AOD Platform
Diqun Yan, Rangding Wang · Jisuanji gongcheng · 2008
This paper proposes a digital secure speech secrete transmission scheme based on Audio-On-Demand(AOD) platform.G.729A coding algorithm is used for secure speech.The bitstream from coder is embedded into open audio files using an improved LSB algorithm,and is put out on the network.Then the client can play back the security speech from the system.Tests show that the quality of cover-audio is improved by the proposed algorithm and the scheme has better transparency to aimed attackers.