【摘要】 本文提出了一种基于Shannon（香农）信息论的、利用超长序列伪随机码作密钥源的保密通信系统。该系统有一次一钥密码系统的不可破译性，又克服了一次一钥系统需要保存大量密码的缺点，是一种实用新技术。文中给出了利用新型单片机构成加密盒和解密盒的原理，以及利用此加密、解密盒与三台PC机构成的实验保密通信系统。结果令人满意。更多还原

【Abstract】 A secure communication system using ultra - long pseudo random sequence and single chip micro - controller has been demonstrated. On the basis of Shannon’s one - time pad theory, this system has been proved very difficult to be attacked. The demonstration diagram in laboratory is also described.更多还原