reversible data hiding in encrypted images by image partitioning

Deepika M P; Nivya Gopal; Asha Rose Thomas; Ierin Babu

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25-Feb-26

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reversible data hiding in encrypted images by image partitioning

Author(s):

Deepika M P , adi shankara institute of engineering and technology; Nivya Gopal , adi shankara institute of engineering and technology; Asha Rose Thomas, adi shankara institute of engineering and technology; Ierin Babu, Adi Shankara Institute of Engineering and Technology Kalady, India

Keywords:

Encryption, RDH, steganography, PSNR, Histogram shifting, Image partition

Abstract:

The concept of reversible data hiding technique is based on steganography and related to internet security. When it is desired to send the confidential or secure data over an insecure medium it is necessary to encrypt the cover data and then embed the confidential or secure data into that cover data. For achieving this features there are various data hiding techniques, compression techniques, and encryption or decryption techniques available. Also it is important that the data hiding should be reversible in nature, should be suitable for encryption/decryption domain. The main issues regarding the data hiding are Distortion, Noise condition and uneven distribution of embedding capacity. In this work, we propose a novel method for data hiding in encrypted image with less distortion and high embedding capacity. Here we used Histogram shifting as the data hiding technique. Histogram Shifting utilizes zero and peak points of histogram of an image to embed the data. In order to improve security of hidden data, Encryption technique is applied so that intruder cannot predict the presence of hidden data. Also as a striking feature ‘Image partitioning’ prior to image encryption at content owner side is introduced, thus RDH tasks in encrypted images would be more natural and much easier which leads us to the novel framework,” Reversible data hiding by image partitioning”. And as a result the performance is measured in terms of PSNR values.