Paper 2006/215

Cryptanalysis of an Image Scrambling Scheme without Bandwidth Expansion

Shujun Li, Chengqing Li, Kowk-Tung Lo, and Guanrong Chen


Recently, a novel image scrambling (i.e., encryption) scheme without bandwidth expansion was proposed based on two-dimensional (2-D)discrete prolate spheroidal sequences (DPSS). This paper gives a comprehensive cryptanalysis of the image scrambling scheme, and draw a conclusion that it is not sufficiently secure against various cryptographical attacks, including ciphertext-only attack, known/chosen-plaintext attack and chosen-ciphertext attack. The cryptanalytic results suggest that the image scrambling scheme can only be used to realize perceptual encryption, instead of provide content protection for digital images.

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Published elsewhere. Unknown where it was published
discrete prolate spheroidal sequences (DPSS)image scramblingencryptioncryptanalysisciphertext-only attackknown-plaintext attackchosen-plaintext attackchosen-ciphertext attackHadamard matrixperceptual encryption
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hooklee75 @ hotmail com
2006-06-29: revised
2006-06-28: received
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      author = {Shujun Li and Chengqing Li and Kowk-Tung Lo and Guanrong Chen},
      title = {Cryptanalysis of an Image Scrambling Scheme without Bandwidth Expansion},
      howpublished = {Cryptology ePrint Archive, Paper 2006/215},
      year = {2006},
      note = {\url{}},
      url = {}
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