An image encryption algorithm based on spatiotemporal chaos in DCT domain

To solve the drawbacks of some chaotic image encryption schemes, an image encryption algorithm based on spatiotemporal chaos in DCT domain is proposed in this paper. The image after DCT transformation and quantization is encrypted block by block. Every block is first permuted by placing the value on...

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Bibliographic Details
Published in2010 2nd IEEE International Conference on Information Management and Engineering pp. 267 - 270
Main Authors Ge Xin, Liu Fen-lin, Lu Bin, Wang Wei, Chen Juan
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2010
Subjects
Chaos
Cryptography
Discrete cosine transforms
Image coding
Image encryption
Information science
Internet
Logistic map
Logistics
PCBC
Quantization
Resists
Spatiotemporal chaos
Spatiotemporal phenomena
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ISBN9781424452637
1424452635
DOI10.1109/ICIME.2010.5477434

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Summary:To solve the drawbacks of some chaotic image encryption schemes, an image encryption algorithm based on spatiotemporal chaos in DCT domain is proposed in this paper. The image after DCT transformation and quantization is encrypted block by block. Every block is first permuted by placing the value on the same position of a chosen block using Logistic map, then the signs of the permuted block are extracted and encrypted by the spatiotemporal. Propagating cipher-block chaining mode (PCBC) is adopted in the scheme, and it's from analysis and experiments that the scheme can resist chosen plaintext and ciphertext attacks without influence on the compression efficiency.
ISBN:9781424452637
1424452635
DOI:10.1109/ICIME.2010.5477434