Lecture: Cryptanalysis of a Reversible Data Hiding Scheme in Encrypted Images ...
Master data
Title: | Cryptanalysis of a Reversible Data Hiding Scheme in Encrypted Images by Improved Redundant Space Transfer |
Description: | In this paper, we propose a novel attack model called the Got Plaintext Attack (GPA), where the attacker only requires one plaintext and the ciphertext image set stored in the cloud to attack the content of the ciphertext image. Using this model, we examine the security of the Improved Redundant Space Transfer (IRST) encryption method. To this end, we define an ordered characteristic matrix based on the properties of the three keys used in IRST. By comparing the histogram distance of the ordered characteristic matrix, we are able to obtain a plain-ciphertext pair. Furthermore, by leveraging the invariant properties of the ordered characteristic matrix of image blocks in the plain-ciphertext pair, we estimate the block permutation Π2 and the bit-plane permutation sequence Π1. Our experiments show that the accuracy of estimating Π2 is higher than 70% for block sizes of 3×3 pixels or larger. Despite a 40% accuracy in estimating Π1, the content information of the ciphertext image can still be exposed. |
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Type: | Registered lecture |
Homepage: | https://vcip2023.iforum.biz/ |
Event: | IEEE International Conference on Visual Communications and Image Processing (IEEE VCIP 2023) (Jeju) |
Date: | 07.12.2023 |
lecture status: | stattgefunden (Präsenz) |
Participants
Lingfeng Qu (external) |
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Hongjie He (external) |
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Hadi Amirpourazarian (internal) |
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Mohammad Ghanbari (internal) |
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Christian Timmerer (internal) |
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Assignment
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Fakultät für Technische Wissenschaften
Institut für Informationstechnologie
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AT - 9020 Klagenfurt am Wörthersee |
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Cooperations
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Southwest Jiaotong University
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CN - 610032 Jinniu District, Chengdu, Sichuan |
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University of Essex
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GB - C04 3SQ Colchester |
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