Characteristics analysis and application of the encryption algorithm based on dual-chaos theory

摘要

In secure communications, chaos has the characteristics of excellent encryption technology, it is appropriate for applications in information encryption. But what the limited accuracy of the computer and simple structure of the chaotic system are easily threatened, and chaotic structure limits its practical application. To solve the problem, a new kind of chaotic encryption algorithm — dual chaos is proposed. The encryption algorithm is based on the one-dimensional logistic map as chaotic model. By dual-chaotic system parameter controlling, the chaotic behavior is more complex. In addition, to the dual-chaotic trajectory, length of the plaintext as a new controlling parameter is involved in the encryption process. To overcome the shortcoming, key sequence influence by password of user, enhance the security of arithmetic further.