An Image Steganography Algorithm for Hiding Data Based on HDWT, LZW and OPAP

Al-Ashwal, A. Y.; Almawgani, Abdulkarem H. M.; Al-Arashi, Waled Hussein

doi:10.20428/jst.20.1.2

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…In this work, the researchers propose a hybrid steganography method that applies a similar technique to that reported in [16], with the slight modification of incorporating the GA to achieve optimal mapping for each block size of interest, ultimately to improve the quality of the stego image.…”

Section: The Proposed Methodsmentioning

confidence: 99%

“…The Lena and Baboon cover images were used for comparison of performance among eight existing algorithms while the Jet and Boat cover images were used for comparison of performance among four related methods based on the results reported in [4,8,9,11,15,16,18,28,29] and each of the PSNR and HC as the performance evaluation criteria ( Table 2). The comparison (Table 2) uncovers that the proposed algorithm has an comparable performance with the algorithms presented in [4,8,9,16,18,[28][29][30][31] in terms of the PSNR and HC. The algorithms introduced in [11,15] have high PSNR values but their HC values are lower than the HC values produced by the proposed hybrid image steganography algorithm.…”

Section: Histogram Analysismentioning

confidence: 99%

“…For instance, it has a high ability to perform different digital image processes such as compression and blurring [5,[9][10][11]. To ensure high capacity for handling secret data while assuring high quality of the stego image with the DWT, researchers and practitioners encode and compress the secret data using various encoding algorithms [12][13][14][15][16]. Optimization algorithms are also proposed to emhance the quality of the stego image [9,17,18].…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Image Steganography Method Using LZW and Genetic Algorithm for Hiding Confidential Data

Almawgani

Alhawari

Alarashi³

et al. 2020

Preprint

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Digital images are commonly used in steganography due to the popularity of digital image transfer and exchange through the Internet. However, the tradeoff between managing high capacity of secret data and ensuring high security and quality of stego image is a major challenge. In this paper, a hybrid steganography method based on Haar Discrete Wavelet Transform (HDWT), Lempel Ziv Welch (LZW) algorithm, Genetic Algorithm (GA), and the Optimal Pixel Adjustment Process (OPAP) is proposed. The cover image is divided into non-overlapping blocks of nxn pixels. Then, the HDWT is used to increase the robustness of the stego image against attacks. In order to increase the capacity for, and security of, the hidden image, the LZW algorithm is applied on the secret message. After that, the GA is employed to give the encoded and compressed secret message cover image coefficients. The GA is used to find the optimal mapping function for each block in the image. Lastly, the OPAP is applied to reduce the error, i.e., the difference between the cover image blocks and the stego image blocks. This step is a further improvement to the stego image quality. The proposed method was evaluated using four standard images as covers and three types of secret messages. The results demonstrate higher visual quality of the stego image with a large size of embedded secret data than what is generated by already-known techniques. The experimental results show that the information-hiding capacity of the proposed method reached to 50% with high PSNR (52.83 dB). Thus, the herein proposed hybrid image steganography method improves the quality of the stego image over those of the state-of-the-art methods.

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Section: The Proposed Methodsmentioning

confidence: 99%

Section: Histogram Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid Image Steganography Method Using LZW and Genetic Algorithm for Hiding Confidential Data

Almawgani

Alhawari

Alarashi³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

Hybrid image steganography method using Lempel Ziv Welch and genetic algorithms for hiding confidential data

Almawgani

Alhawari

Hindi

et al. 2022

Multidim Syst Sign Process

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Highly Secured Hybrid Image Steganography with an Improved Key Generation and Exchange for One-Time-Pad Encryption Method

Takaoğlu

Özyavaş

Ajlouni

et al. 2023

Afyon Kocatepe University Journal of Sciences and Engineering

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Steganography is a subject of study that has been used to hide information throughout history. In cryptology science, the information to be hidden is encrypted. Both study subjects are widely used in information security and protection. In our study, digital image steganography, which is one of the application areas of steganography, was developed and applied to hide text in the selected images. While doing this, the low bands that will hide the data using the discrete Haar wavelet transform of the images obtained first. The text to be hidden is encrypted with the one-time-pad algorithm. The key used for the encryption is transmitted to the receiver using a transmission layer based on a Highly Secured Information Exchange Algorithm. The algorithms use a randomly generated key pool maintained by both the transmitter and the receiver. A key is selected from the pool randomly by generating a random key start point for every message. The pool size and the randomness are critical factors in guaranteeing no key repetition, which is a requirement for a one-time-pad. The ciphertext and the key starting point indicator are hidden in the low bands of the pictures by utilizing the least significant bit method. The optimal pixel adjustment process was applied to the pre-stego-images, this resulted in an improvement in the results. The results obtained in this study are compared against the pre-optimal pixel adjustment process results and the results obtained through peer studies. The test results show that the proposed method outperformed all the methods in terms of peak signal-to-noise ratio, structural similarity index metric, mean absolute error, mean consequential error and the encryption key security.

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An Image Steganography Algorithm for Hiding Data Based on HDWT, LZW and OPAP

Cited by 3 publications

References 12 publications

Hybrid Image Steganography Method Using LZW and Genetic Algorithm for Hiding Confidential Data

Hybrid Image Steganography Method Using LZW and Genetic Algorithm for Hiding Confidential Data

Hybrid image steganography method using Lempel Ziv Welch and genetic algorithms for hiding confidential data

Highly Secured Hybrid Image Steganography with an Improved Key Generation and Exchange for One-Time-Pad Encryption Method

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