LVGG-IE: A Novel Lightweight VGG-Based Image Encryption Scheme
Image security faces increasing challenges with the widespread application of computer science and artificial intelligence. Although chaotic systems are employed to encrypt images and prevent unauthorized access or tampering, the degradation that occurs during the binarization process in chaotic sys...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-11-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/26/12/1013 |
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| author | Mingliang Sun Jie Yuan Xiaoyong Li Dongxiao Liu Xinghai Wei |
| author_facet | Mingliang Sun Jie Yuan Xiaoyong Li Dongxiao Liu Xinghai Wei |
| author_sort | Mingliang Sun |
| collection | DOAJ |
| description | Image security faces increasing challenges with the widespread application of computer science and artificial intelligence. Although chaotic systems are employed to encrypt images and prevent unauthorized access or tampering, the degradation that occurs during the binarization process in chaotic systems reduces security. The chaos- and DNA-based image encryption schemes increases its complexity, while the integration of deep learning with image encryption is still in its infancy and has several shortcomings. An image encryption scheme with high security and efficiency is required for the protection of the image. To address these problems, we propose a novel image encryption scheme based on the lightweight VGG (LVGG), referred to as LVGG-IE. In this work, we design an LVGG network with fewer layers while maintaining a high capacity for feature capture. This network is used to generate a key seed, which is then employed to transform the plaintext image into part of the initial value of a chaotic system, ensuring that the chaos-based key generator correlates with the plaintext image. A dynamic substitution box (S-box) is also designed and used to scramble the randomly shuffled plaintext image. Additionally, a single-connected (SC) layer is combined with a convolution layer from VGG to encrypt the image, where the SC layer is dynamically constructed by the secret key and the convolution kernel is set to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mo>×</mo><mn>2</mn></mrow></semantics></math></inline-formula>. The encryption efficiency is simulated, and the security is analyzed. The results show that the correlation coefficient between adjacent pixels in the proposed scheme achieves <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></semantics></math></inline-formula>. The NPCR exceeds 0.9958, and the UACI falls within the theoretical value with a significance level of 0.05. The encryption quality, the security of the dynamic S-box and the SC layer, and the efficiency are tested. The result shows that the proposed image encryption scheme demonstrates high security, efficiency, and robustness, making it effective for image security in various applications. |
| format | Article |
| id | doaj-art-23ff239f2b0b4b2da08bbba09a6f5fbd |
| institution | Kabale University |
| issn | 1099-4300 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj-art-23ff239f2b0b4b2da08bbba09a6f5fbd2024-12-27T14:24:56ZengMDPI AGEntropy1099-43002024-11-012612101310.3390/e26121013LVGG-IE: A Novel Lightweight VGG-Based Image Encryption SchemeMingliang Sun0Jie Yuan1Xiaoyong Li2Dongxiao Liu3Xinghai Wei4Key Laboratory of Trustworthy Distributed Computing and Service (BUPT), Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaKey Laboratory of Trustworthy Distributed Computing and Service (BUPT), Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaKey Laboratory of Trustworthy Distributed Computing and Service (BUPT), Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaKey Laboratory of Trustworthy Distributed Computing and Service (BUPT), Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaKey Laboratory of Trustworthy Distributed Computing and Service (BUPT), Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaImage security faces increasing challenges with the widespread application of computer science and artificial intelligence. Although chaotic systems are employed to encrypt images and prevent unauthorized access or tampering, the degradation that occurs during the binarization process in chaotic systems reduces security. The chaos- and DNA-based image encryption schemes increases its complexity, while the integration of deep learning with image encryption is still in its infancy and has several shortcomings. An image encryption scheme with high security and efficiency is required for the protection of the image. To address these problems, we propose a novel image encryption scheme based on the lightweight VGG (LVGG), referred to as LVGG-IE. In this work, we design an LVGG network with fewer layers while maintaining a high capacity for feature capture. This network is used to generate a key seed, which is then employed to transform the plaintext image into part of the initial value of a chaotic system, ensuring that the chaos-based key generator correlates with the plaintext image. A dynamic substitution box (S-box) is also designed and used to scramble the randomly shuffled plaintext image. Additionally, a single-connected (SC) layer is combined with a convolution layer from VGG to encrypt the image, where the SC layer is dynamically constructed by the secret key and the convolution kernel is set to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mo>×</mo><mn>2</mn></mrow></semantics></math></inline-formula>. The encryption efficiency is simulated, and the security is analyzed. The results show that the correlation coefficient between adjacent pixels in the proposed scheme achieves <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></semantics></math></inline-formula>. The NPCR exceeds 0.9958, and the UACI falls within the theoretical value with a significance level of 0.05. The encryption quality, the security of the dynamic S-box and the SC layer, and the efficiency are tested. The result shows that the proposed image encryption scheme demonstrates high security, efficiency, and robustness, making it effective for image security in various applications.https://www.mdpi.com/1099-4300/26/12/1013VGGimage encryptS-boxsingle-connected layerchaos |
| spellingShingle | Mingliang Sun Jie Yuan Xiaoyong Li Dongxiao Liu Xinghai Wei LVGG-IE: A Novel Lightweight VGG-Based Image Encryption Scheme Entropy VGG image encrypt S-box single-connected layer chaos |
| title | LVGG-IE: A Novel Lightweight VGG-Based Image Encryption Scheme |
| title_full | LVGG-IE: A Novel Lightweight VGG-Based Image Encryption Scheme |
| title_fullStr | LVGG-IE: A Novel Lightweight VGG-Based Image Encryption Scheme |
| title_full_unstemmed | LVGG-IE: A Novel Lightweight VGG-Based Image Encryption Scheme |
| title_short | LVGG-IE: A Novel Lightweight VGG-Based Image Encryption Scheme |
| title_sort | lvgg ie a novel lightweight vgg based image encryption scheme |
| topic | VGG image encrypt S-box single-connected layer chaos |
| url | https://www.mdpi.com/1099-4300/26/12/1013 |
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