Resumo

SORIA LORENTE, Anier; CUMBRERA GONZALEZ, Ramiro A  e  FONSECA REYNA, Yunior. Steganographic algorithm of private key on the domain of the cosine discrete transform. Rev cuba cienc informat [online]. 2016, vol.10, n.2, pp. 116-131. ISSN 2227-1899.

The private key steganography is a system similar to the cryptographic system of symmetric figure. In this paper, is objective to show a new steganographic algorithm, that use a private key, linked with frequency domain using discrete cosine transform, generate a new binary sequence from the message to hide and suggest the positions where will be inserted the binary sequence elements. The proposed algorithms improvement the imperceptibility, analyzed through obtained results of parameters: peak signal to-noise ratio, relative entropy (Er) and the correlation coefficients of histograms pairs of the steganogram and the cover image, comparing with the results of the methods proposed in the literature.

Palavras-chave : Steganography; DCT domain; digital image; information security; private key.

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