Jul 2026· International Conference on Image, Video and Signal Processing· Vol 14268, pp. 142680Q - 142680Q-14· 0 citations· 12 references
Engineering
TL;DR
This work proposes a novel VRAE framework based on interpolation-based difference, creating a stable embedding space via a specialized encryption design that achieves a significantly higher embedding capacity on multiple test images compared to existing state-of-the-art schemes.
Abstract
With the rapid development of information technology and network transmission, the generation, storage, and sharing of images are widely applied in daily life. Reversible Data Hiding in Encrypted Images (RDHEI) is a key technology addressing security and privacy challenges. However, existing Vacating Room After Encryption (VRAE) methods for achieving high capacity often rely on MSB prediction, a technique whose performance is inherently tied to image texture. To overcome this, we propose a novel VRAE framework based on interpolation-based difference, creating a stable embedding space via a specialized encryption design. Our methodology uses a unique two-stage encryption process, applying Difference-Preserving Encryption (DPE) to downsampled reference pixels, followed by applying a pseudorandom constant mask (PRF Mask) to non-reference pixels. The core innovation is that the same constant mask is applied to both the original and interpolated images, precisely preserving the difference structure. This enables a "capacityadaptive" embedding strategy that yields bits from zero-difference blocks to secret data, maximizing efficiency. Experimental results confirm that the proposed method achieves a significantly higher embedding capacity on multiple test images compared to existing state-of-the-art schemes. Security analysis confirms the method's robustness against statistical attacks, while complete reversibility is guaranteed.
Reversible data hiding in encrypted images (RDHEI) often creates embedding room by preserving or preprocessing image redundancy, thereby coupling the hiding layer to a specialized encryption model. This paper presents a dual-image method that works directly on AES-CTR ciphertext. Its design rests on four elements: a keyed Sudoku coordinate code for carrying two base-8 digits per accepted pair; exact reconstruction of each ciphertext pair from inter-block displacement; AES-GCM framing for payload confidentiality and integrity; and an adaptive movement threshold that selects the lowest-distortion mappings able to accommodate the complete frame. The data hider requires neither plaintext nor the image-encryption key, and no location map is transmitted. On sixteen 512×512 grayscale images, the method achieves a mean maximum net rate of 1.4187 bits per transmitted pixel. At ERt=1.0, the two marked outputs reach mean PSNR values of 47.65 dB, and all 160 image-rate trials yield zero payload error and pixel-exact recovery. An independent implementation of the embedding and recovery layer of Venkatesh et al. is also examined; published and reproduced results are reported separately where the original specification leaves ambiguity. The experiments show that the proposed architecture provides predictable payload, low carrier-domain distortion, authenticated framing, and exact recovery while retaining standard image encryption.
Cao Thi Luyen· Journal of Science and Techn...· 0 citations
A novel, integrated security frame- work that forges robust and persistent cryptographic link by embedding a patient’s encrypted fingerprint data directly into their medical images, thereby pre- serving the clinical reliability of the scan.
Maitri Shekhda, Sakshi Rajani, Rithvik Kashyap Bookinakere Shekar et al.· International Conference on...· 0 citations
A new framework that combines hybrid encryption with saliency-based adaptive embedding to select the most effective regions for data concealment in cover images, based on the BossBase dataset is proposed.
Abdullah S. al-Malaise Alghamdi, Rana Alrawashdeh· Journal of Cyber Security an...· 0 citations
Experimental results demonstrate the algorithm’s effectiveness in preserving privacy while enabling perfect image recovery: the container images achieve an average PSNR of 40.08 dB and MSSIM of 0.988 relative to the carriers, confirming near-perceptual-indistinguishability; the reconstructed secret images are recovered with a bit-level accuracy of 100%; and the algorithm maintains robustness under Gaussian noise, salt-and-pepper noise, and PCA compression
Protecting confidential information requires not only preventing unauthorized access to encrypted data but also concealing the very existence of the protected information. In this work, we propose a computational dual-layer optical security framework that integrates optical encryption and steganographic camouflage into a unified strategy. The proposed method is based on a 4F optical architecture and employs two two-dimensional private keys: a phase-only key represented through Circular Harmonic Components (CHC) and a periodic amplitude mask acting as a second secret key. Their combined action generates visually diverse steganograms from encrypted RGB images while preserving the correct recovery of the original information by authorized users. Unlike conventional optical encryption methods that produce easily recognizable cryptograms, the proposed approach disguises the encrypted information within camouflage patterns, providing an additional layer of protection before any decryption process is attempted. Numerical simulations demonstrate successful encryption, camouflage, and image recovery while showing that different steganographic appearances can be generated by modifying the private key and the periodic-mask parameters. Furthermore, a prospective optical implementation based on a Mach--Zehnder interferometer and digital holographic recording is presented, providing a feasible path toward future experimental realization. The proposed methodology is introduced as a proof of concept of the dual-layer optical security framework; a comprehensive cryptanalytic evaluation is beyond the scope of this first study and is left for future work.
Encryption is cast-off to defend the safety and confidentiality of users’ data. In some claims, the media used to convey added bits is scrambled to be threatened from being examined.Too, in cloud storage atmosphere, one of the further most imperative submission situations, the adventure of encryption will fetch innovative contest that data will lost its types after encryption, which will type many current data processing methods no effect. Were commend an innovative scheme of gauging the difficulty of image blocks, which contemplates manifold adjacent pixels rendering to the sites of dissimilar pixels.
Unknown authors· Journal of Science & Technol...· 0 citations
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