DOI:
https://doi.org/10.14483/22484728.14665Publicado:
2018-05-22Número:
Vol. 1 Núm. 1 (2018): Edición especialSección:
Visión InvestigadoraEsteganografía de voz basada en cuantización mejorada
Speech steganography based on enhancement QIM
Palabras clave:
Capacidad de ocultamiento, Cuantización, Esteganografía, Señal huésped, Transparencia (es).Palabras clave:
Hiding capacity, Quantization, Audio steganography, Host signal, Imperceptibility (en).Descargas
Resumen (es)
Una de los mecanismos para transmitir información segura consiste en la utilización de técnicas esteganográficas, entre las cuales, QIM sobresale por proporcionar alta transparencia. Sin embargo, la capacidad de ocultamiento es relativamente baja. En este artículo, se presenta una mejora al método QIM con el objetivo de mantener una alta transparencia en la señal transmitida, pero cuadriplicando su capacidad de ocultamiento. Se realizaron numerosas pruebas para medir el efecto de cuantización tanto en la señal esteganográfica, como en el mensaje secreto recuperado.
Resumen (en)
One of the mechanisms for transmitting secure information consists of the use of steganographic techniques, among which, QIM provides high transparency. However, its hiding capacity is relatively low. In this paper, an improvement to the QIM method is presented in order to maintain a high transparency in the transmitted signal (i.e. stego signal), but increasing the hiding capacity (HC), by a factor of four times. Several tests were performed in order to measure the quantization effect on both the stego signal and the recovered secret message.
Referencias
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