---
title: Cryptanalysis of an Encryption Scheme Based on Blind Source Separation
url: https://www.emergentmind.com/papers/0608024
type: paper
arxiv_id: '0608024'
arxiv_url: https://arxiv.org/abs/0608024
published: '2006-08-04'
categories:
- cs.CR
- cs.MM
---

# 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.