Information Hiding in Real-Time VoIP Streams
ISM '07 Proceedings of the Ninth IEEE International Symposium on Multimedia
Digital logic based encoding strategies for steganography on voice-over-IP
MM '09 Proceedings of the 17th ACM international conference on Multimedia
IEEE Spectrum
MELPe Coded Speech Hiding on Enhanced Full Rate Compressed Domain
AMS '10 Proceedings of the 2010 Fourth Asia International Conference on Mathematical/Analytical Modelling and Computer Simulation
Hiding information in a Stream Control Transmission Protocol
Computer Communications
Steganography in streaming multimedia over networks
Transactions on Data Hiding and Multimedia Security VII
Steganography in Inactive Frames of VoIP Streams Encoded by Source Codec
IEEE Transactions on Information Forensics and Security
Fast Matrix Embedding by Matrix Extending
IEEE Transactions on Information Forensics and Security - Part 2
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Common least significant bit (LSB) relevant steganography methods in speech frames often base on bits evaluation by certain speech quality evaluation criterion and together with some coding and embedding strategies to enhance imperceptibility and efficiency. However, some embedding capabilities and security strategy are neglected. This paper proposes a state-based steganography method which fully investigates speech frame features in order to expand embedding capabilities and enhance steganography security. In the proposed method, embedding capabilities are measured by available numbers of states relative to current frame parameters rather than information bits. And secret information embedding procedure is performed by the chosen states mapped operations. This is a basic fine-grained steganography solution which is useful for other algorithms based on it. The experimental results have demonstrated that statebased method outperforms traditional LSB substitution in overall performance and introduces limited latency, which meets the realtime requirement in covert communications.