Suggested algorithm’s key space along with comparison. by Nasreen Zulfiqar (21601226)

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Comparison of correlation coefficients of adjacent pixels using different encryption methods. by Nasreen Zulfiqar (21601226)

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Encrypted and decrypted images. by Feixian Liu (22477943)

“…Based on the 2D-SQSM, this paper further designs a highly robust color image encryption algorithm. First, by introducing different hash functions multiple times, the correlation between the key and plaintext is enhanced, significantly improving resistance against brute-force attacks; second, cyclic shifting and segmentation-recombination operations are applied separately to the three RGB channels to effectively disrupt pixel distribution and significantly reduce spatial correlation between pixels; finally, the chaotic sequence generated by the 2D-SQSM is utilized for XOR diffusion, further enhancing the randomness and diffusion capability of the ciphertext. …”

Comparison of NPCR and UACI metrics across different encryption schemes. by Bayan Alabdullah (22170837)

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Comparative analysis of correlation coefficients across different encryption schemes. by Bayan Alabdullah (22170837)

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Images after encryption: (a) Hailstones image; (b) Flowers image; (c) Chair image; (d) Bride image. by Bayan Alabdullah (22170837)

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Image Encryption Flow Chart. by Feixian Liu (22477943)

“…Based on the 2D-SQSM, this paper further designs a highly robust color image encryption algorithm. First, by introducing different hash functions multiple times, the correlation between the key and plaintext is enhanced, significantly improving resistance against brute-force attacks; second, cyclic shifting and segmentation-recombination operations are applied separately to the three RGB channels to effectively disrupt pixel distribution and significantly reduce spatial correlation between pixels; finally, the chaotic sequence generated by the 2D-SQSM is utilized for XOR diffusion, further enhancing the randomness and diffusion capability of the ciphertext. …”

Example of shift rows encryption. by Mingyi Huo (21743594)

“…Experimental results show that the proposed algorithm reduces encryption time to 2.2369 s for a 256256 grayscale image, representing an 87.08% improvement over traditional AES (17.3090 s) and a 48.41% improvement over other AES-based chaotic encryption algorithms (4.3360 s). …”

Encryption speed of the proposed technique and its comparative analysis with existing methods. by Bayan Alabdullah (22170837)

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Encryption and decryption of images: (a) Hailstones plain image; (b) Hailstones cipher image; (c) Chair plain image; (d) Chair cipher image. by Bayan Alabdullah (22170837)

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Data and code. by Hao Cao (2248066)

Illustrative diagram of the algorithm selection, training dataset building and training/testing process. by Leonardo Costa Ribeiro (10439243)

Experimental images&Table1-10&Figure1-15.docx by Feixian Liu (21987380)

“…<p dir="ltr">A Robust Color Image Encryption Algorithm Based on 2D-SQSM Hyperchaotic Map and Cyclic Shift Scrambling</p>…”

Convergence curves for the applied algorithms. by Eslam Hamouda (5172083)

Pseudo Code of RBMO. by Chenyi Zhu (9383370)

Decrypted color plain. by Ye Tao (326899)

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Keys space. by Ye Tao (326899)

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The corresponding relationship between R2(1, j) and Y1(1, j). by Ye Tao (326899)

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Red plain horizontal correlation. by Ye Tao (326899)

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Bifurcation diagram of LSS for <i>β</i> = 200. by Ye Tao (326899)

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