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Encriptación de imágenes en color basada en el caos con compresión JPEG: equilibrar la seguridad y la eficiencia de
Wei Zhang1, Xue Zheng1, Meng Xing1
1College of Software, Northeastern University, Shenyang 110167, China.
Entropy (Basel, Switzerland)
|August 28, 2025
Resumen
Este estudio presenta un nuevo algoritmo de encriptación de imágenes en color que se integra con la compresión JPEG. Mejora la seguridad de la imagen durante la transmisión manteniendo la eficiencia de compresión.
Área de la Ciencia:
- Ciencias de la computación
- Seguridad de la información
- Procesamiento de imágenes digitales
Sus antecedentes:
- Los métodos de encriptación de imágenes digitales existentes a menudo pasan por alto la integración con técnicas de compresión como JPEG.
- Las aplicaciones de Internet utilizan ampliamente la compresión de imágenes, lo que requiere soluciones de encriptación compatibles para la transmisión segura de datos.
Objetivo del estudio:
- Desarrollar un innovador algoritmo de encriptación de imágenes en color compatible con la compresión JPEG.
- Mejorar la seguridad de las imágenes durante la transmisión prolongada contra ataques y manipulaciones.
- Para lograr un equilibrio óptimo entre la seguridad de encriptación y la eficiencia de compresión.
Principales métodos:
- El algoritmo propuesto integra la encriptación dentro de las tres fases principales de compresión de JPEG: Transformación discreta de coseno (DCT), cuantización y codificación de entropía.
- Las técnicas avanzadas incluyen la segmentación de bloques, el reemplazo de bloques, la confusión de coeficientes de CC, la transformación de coeficientes de CA distintos de cero y la recombinación de pares de ejecución/tamaño y valor (RSV).
Principales resultados:
- Simulaciones extensas y análisis de seguridad confirman la eficacia del algoritmo.
- El algoritmo demuestra una fuerte robustez contra la interferencia de ruido y la pérdida de datos.
Conclusiones:
- El algoritmo de encriptación y compresión integrado propuesto cumple con los estrictos requisitos de rendimiento de seguridad.
- Este enfoque ofrece una solución viable para la transmisión segura de imágenes en aplicaciones de Internet.
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