Reversible Data Hiding in Encrypted Images Based on Block Selection and Bit-Plane Compression

Reversible data hiding in encrypted image enables the embedding of confidential information while preserving the privacy of the host image. Existing reversible data hiding in encrypted image algorithms suffer from low embedding rates and security vulnerabilities. Therefore, a novel reversible data hiding in encrypted image algorithm based on block selection and bit-plane compression is proposed. In the image encryption phase, the key is redesigned using integer wavelet transform and hash encryption. In the data embedding phase, the image is partitioned into blocks and labeled, and different design strategies are applied to different types of blocks to reserve space for data embedding. Simulation experiments demonstrate that the proposed method enhances the security of encrypted images and improves the embedding rate of the host image.