Cryptanalysis of an Encryption Scheme Based on Blind Source Separation

Abstract

Recently Lin et al. proposed a method of using the underdetermined BSS (blind source separation) problem to realize image and speech encryption. In this paper, we give a cryptanalysis of this BSS-based encryption and point out that it is not secure against known/chosen-plaintext attack and chosen-ciphertext attack. In addition, there exist some other security defects: low sensitivity to part of the key and the plaintext, a ciphertext-only differential attack, divide-and-conquer (DAC) attack on part of the key. We also discuss the role of BSS in Lin et al.'s efforts towards cryptographically secure ciphers.

8 pages, 10 figures, IEEE format

References in corpus (4)

• On the Design of Perceptual MPEG-Video Encryption Algorithms
• Cryptanalysis of an Encryption Scheme Based on Blind Source Separation
• On the security of the Yen-Guo's domino signal encryption algorithm (DSEA)
• Security Problems with Improper Implementations of Improved FEA-M

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• Decomposing Temperature Time Series with Non-Negative Matrix Factorization
• An optical image encryption scheme based on depth-conversion integral imaging and chaotic maps