Encrypted Data Concealment in Encrypted Images
Author(s):
Bhagyashri S. Jatte, Asst. Prof. A.S. Deshpande
Keywords:
Image Encryption, Data Hiding, Chaos Encryption Technique, LSB method
Abstract
The paper proposes the enhancement of protection system for secret data communication through encrypted data concealment in encrypted images. The image is then separated into various blocks locally and lifting wavelet transform is used to detect approximation and detailed coefficients. Then approximation part is encrypted using chaos encryption method. The proposed encryption technique uses the key to encrypt an image and enhances the safety of secret carrier information by making the information inaccessible to any intruder having a random method. After image encryption, the data hider will conceal the secret data into the detailed coefficients which are reserved before encryption of approximation part. Although encryption achieves certain security effects, they make the secret messages unreadable and unnatural or meaningless. This system is still enhanced with encrypt messages using an asymmetric key method. This is the reason a new security approach called reversible data hiding arises. It is the art of hiding the existence of data in another transmission medium to achieve secret communication. The data hiding technique uses the adaptive LSB replacement algorithm is used for concealing the secret message bits into the encrypted image. In the data extraction module, the secret data will be extracted by using relevant key for choosing the encrypted pixels to extract the data. By using the decryption keys, the image and extracted text data will be decrypted from encryption to get the original information. Finally the performance of this proposal in encryption and data hiding will be analyzed based on image and data recovery.
Article Details
Unique Paper ID: 143261

Publication Volume & Issue: Volume 2, Issue 8

Page(s): 95 - 103
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