DDIM-Driven Coverless Steganography Scheme with Real Key

Typical steganography embeds secret information into images by exploiting their redundancy. Since the visual imperceptibility of secret information is a key factor in scheme evaluation, conventional methods aim to balance this requirement with embedding capacity. Consequently, integrating emerging i...

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Bibliographic Details
Published inarXiv.org
Main Authors Yu, Mingyu, Miao, Haonan, Jin, Zhengping, Sujuan Qing
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 10.11.2024
Subjects
Embedding
Generative adversarial networks
Image enhancement
Image processing
Image quality
Image transmission
Negotiations
Redundancy
Steganography
Visual aspects
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Summary:Typical steganography embeds secret information into images by exploiting their redundancy. Since the visual imperceptibility of secret information is a key factor in scheme evaluation, conventional methods aim to balance this requirement with embedding capacity. Consequently, integrating emerging image generation models and secret transmission has been extensively explored to achieve a higher embedding capacity. Previous works mostly focus on generating stego-images with Generative Adversarial Networks (GANs) and usually rely on pseudo-keys, namely conditions or parameters involved in the generation process, which are related to secret images. However, studies on diffusion-based coverless steganography remain insufficient. In this work, we leverage the Denoising Diffusion Implicit Model (DDIM) to generate high-quality stego-images without introducing pseudo-keys, instead employing real keys to enhance security. Furthermore, our method offers low-image-correlation real-key protection by incorporating chaotic encryption. Another core innovation is that our method requires only one-time negotiation for multiple communications, unlike prior methods that necessitate negotiation for each interaction.
ISSN:2331-8422