In this scheme, the ergodicity of chaos was used to avoid the key of being decrypted, and chaos initial value sensitivity was used to ensure the key could he altered safely in communications.

• 该方案利用混沌的遍历性来增强密钥的抗破译性，利用混沌的初值敏感性来保证加密密钥在通信过程中可安全地动态改变。