Highly Transparent and Secure Scheme for Concealing Text Within Audio
| Autor: | Camilo Lemus, Diego Renza, M L Dora Ballesteros |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Discrete wavelet transform
0209 industrial biotechnology Theoretical computer science Audio signal Steganography Computer science Repetition code 02 engineering and technology Transparency (human–computer interaction) ASCII 020901 industrial engineering & automation Computer Science::Multimedia 0202 electrical engineering electronic engineering information engineering Code (cryptography) 020201 artificial intelligence & image processing Algorithm Computer Science::Cryptography and Security Integer (computer science) |
| Zdroj: | Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications ISBN: 9783319522760 CIARP |
| DOI: | 10.1007/978-3-319-52277-7_4 |
| Popis: | This paper presents a highly transparent and secure scheme for concealing text within audio, based on Quantization Index Modulation and Orthogonal Variable Spreading Factor. The audio signal is decomposed through the Discrete Wavelet Transform and the approximation coefficients are selected to embed the text. Every character of the text is represented by a 256-bit orthogonal code, through mapping operations between the ASCII integer representation of the character and an external key. For improving the quality of recovered data, a repetition code is applied in the embedding process. Several tests were performed in order to measure the transparency of the output audio signal (i.e. stego signal) and the security of the recovered one. The main advantage of our proposal is the good trade-off among transparency, security and hiding capacity. |
| Databáze: | OpenAIRE |
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