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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29526


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3240
A Security Model of Voice Eavesdropping Protection over Digital Networks
Abstract:
The purpose of this research is to develop a security model for voice eavesdropping protection over digital networks. The proposed model provides an encryption scheme and a personal secret key exchange between communicating parties, a so-called voice data transformation system, resulting in a real-privacy conversation. The operation of this system comprises two main steps as follows: The first one is the personal secret key exchange for using the keys in the data encryption process during conversation. The key owner could freely make his/her choice in key selection, so it is recommended that one should exchange a different key for a different conversational party, and record the key for each case into the memory provided in the client device. The next step is to set and record another personal option of encryption, either taking all frames or just partial frames, so-called the figure of 1:M. Using different personal secret keys and different sets of 1:M to different parties without the intervention of the service operator, would result in posing quite a big problem for any eavesdroppers who attempt to discover the key used during the conversation, especially in a short period of time. Thus, it is quite safe and effective to protect the case of voice eavesdropping. The results of the implementation indicate that the system can perform its function accurately as designed. In this regard, the proposed system is suitable for effective use in voice eavesdropping protection over digital networks, without any requirements to change presently existing network systems, mobile phone network and VoIP, for instance.
Digital Object Identifier (DOI):

References:


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[12] ITU-T G.113. Transmission Impairments due to Speech Processing, February 2001.
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[15] Adaptive Multi-Rate (AMR) Speech Codec Transcoding Functions (Release 6), 3GPP TS 26.090 V6.0.0, December 2004.

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