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首页> 外文期刊>Journal of Theoretical and Applied Information Technology >ENHANCING THE HIDING CAPACITY OF AUDIO STEGANOGRAPHY BASED ON BLOCK MAPPING
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ENHANCING THE HIDING CAPACITY OF AUDIO STEGANOGRAPHY BASED ON BLOCK MAPPING

机译：基于块映射增强音频隐写术的隐藏能力

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With the rapid growth in exchanging personal and confidential data through a unsecure channel like the internet and exposing it though disclosing by intruders, the necessity of information security became a great demand. As a result, data hiding or steganography appeared as a vital solution. Audio hiding is a concept of injecting the secret data in an audio carrier. This paper proposes a scheme known as ECA-BM, to improve the performance of the audio steganography. ECA-BM contributes in: (1) increases the hiding capacity, (2) maintains the transparency of carrier and (3) enhance the security of the proposed model. To increase the hiding capacity, fractal coding is adopted to create a mapping between the cover and secret blocks in order to encode the secret data into a set of coefficients with minimum size. To maintain the fidelity of the stego file, only 1-LSB from each cover sample is used for embedding. To increase the security of the ECA-BM, the cover samples for embedding are selected in a chaotic manner. LSB technique is utilized for embedding after converting secret coefficients into a binary sequence. Objective metrics, SNR, HC, and NC is used to evaluate the performance of ECA-BM. The Experimental results show a significant increase in the hiding capacity compared with some related studies. Moreover, the fidelity of the stego and reconstructed secret file are preserved.
机译：随着通过不安全的渠道（如互联网）交换个人和机密数据并通过入侵者的披露使其暴露的迅速增长，信息安全的必要性成为了巨大的需求。结果，数据隐藏或隐写术成为一个至关重要的解决方案。音频隐藏是将秘密数据注入音频载体的概念。本文提出了一种称为ECA-BM的方案，以提高音频隐写技术的性能。 ECA-BM有助于：（1）增加隐藏能力，（2）保持承运人的透明度，（3）增强所提出模型的安全性。为了增加隐藏能力，采用分形编码在覆盖和秘密块之间创建映射，以便将秘密数据编码为具有最小大小的一组系数。为了保持隐秘文件的保真度，每个封面样本中仅1-LSB用于嵌入。为了增加ECA-BM的安全性，以一种混乱的方式选择用于嵌入的封面样本。在将秘密系数转换成二进制序列之后，利用LSB技术进行嵌入。客观指标，SNR，HC和NC用于评估ECA-BM的性能。实验结果表明，与某些相关研究相比，其隐藏能力显着提高。此外，将保留隐秘性和重建的机密文件的保真度。

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