Patent
Image compression and encryption method
Li Lixiang,Hu Yakun,Peng Haipeng,Yang Yixian +3 more
- 02 Feb 2018
3
TL;DR: In this paper, the authors proposed an image compression and encryption method, which comprises the steps of performing a hash operation on an initial key for T times, so as to obtain T hash values, wherein each hash operation obtains a hash value, and each hash operations is performed on the hash value obtained in the previous hash operation, and T is an integer greater than 1.
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Abstract: The invention provides an image compression and encryption method. The method comprises the steps of performing a hash operation on an initial key for T times, so as to obtain T hash values, wherein each hash operation obtains a hash value, and each hash operation is performed on the hash value obtained in the previous hash operation, and T is an integer greater than 1; according to a to-be-encrypted image, obtaining an image coefficient matrix; according to the T hash values, scrambling the image coefficient matrix, so as to obtain a scrambled matrix; according to the T hash values, obtaininga measurement matrix; and according to the scrambled matrix, obtaining a column vector, and performing semi-tensor compression sensing on the column vector by using the measurement matrix, so as to obtain an encrypted image. The method can keep the image highly secure.
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Citations
Patent
Image encryption method based on compressed sensing and information hiding
Ye Guodong,Pan Chen +1 more
- 09 Aug 2019
TL;DR: In this paper, the authors proposed an image encryption method based on compressed sensing and information hiding, and the method comprises the steps: carrying out compressed encryption of a plaintext image through employing a compressed sensing technology, and obtaining a measured value image through a measurement matrix; quantifying the measured value images, and filling and disturbing the quantized image byusing a random number to generate a ciphertext image to be hidden.
2
Patent
Image compression and embedding method based on compressed sensing and color conversion
Ping Ping,Fu Jie,Xiaohui Yang,Xiaojuan Zhang,Yingchi Mao +4 more
- 27 Mar 2020
TL;DR: In this article, an image compression and embedding method based on compressed sensing and color conversion is proposed. But only partial replacement is carried out on the carrier image during embedding, so that a part of original information of the carrier images is better reserved, the encrypted carrier image is more similar to the original carrier image, and the security is improved.
Patent
Image compressed sensing encryption and decryption method, device and system based on chaotic source
Li Lixiang,Chen Yixin,Peng Haipeng +2 more
- 20 Oct 2020
TL;DR: In this article, the authors proposed a chaotic source based image compressed sensing encryption and decryption method, which comprises the steps of obtaining a to-be-transmitted image and a randomly generated chaotic seed packet; performing preset filling, blocking and rearrangement processing on the to- be-ransmitted image to obtain a recombined image; generating a measurement matrix based on the first chaotic seed, and performing half-tensor operation on each column component by adopting the measurement matrix to get a first encrypted column component; generating mask matrix, and then performing mask coverage encryption on each
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Patent
Calculating holographic encryption method based on Hash function
Wang Qionghua,Song-Jie Li,Liu Sujuan,Wang Di +3 more
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TL;DR: In this article, a calculating holographic encryption method based on a hash function is proposed. But the method requires a conflict-free hashing operation and a conflict processing operation to obtain the hash table.
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Patent
Image data verification program, image data verification method and image data verification system
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TL;DR: In this paper, the authors proposed a technique for disclosing partially encrypted (concealed) image data by both of paper media and digital media and achieving browser decoding processing and partial originality verification.
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Patent
Encryption device, computer-readable recording medium, and encryption method
Takasu Nobuyuki
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4
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