Some hints for the design of digital chaos-based cryptosystems: lessons   learned from cryptanalysis
  In this work we comment some conclusions derived from the analysis of recent proposals on the field of chaos-based cryptography. These observations remark the main problems detected in some of those schemes under examination. Therefore, this paper is a list of what to avoid when considering chaos as source of new strategies to conceal and protect information. 
David Arroyo, Gonzalo Alvarez, Shujun Li