The drawback with past communication systems was that it were very slow and were time taking process such as telegrams, letter etc. People used to afraid to write their personal feedbacks or things to their love ones due to insecure medium of communication. 以往的通讯系统的问题是速度慢,费时间,比如:电报和信件等。在过去,人们不敢给爱人写一些私密的事情因为担心通信不够安全。
Concerning the insecure factors of Short Message Service ( SMS) in public mobile network, a SMS system for secure communication was put forward. 针对目前移动公网中短信系统存在的不安全因素,提出了一种安全短消息通信系统。
This new system provides secure communication between bi-users and multi-users over an insecure communication channel. 该方案利用现有不保密通信信道提供双用户或多用户之间的可靠保密通信。
Compare with the family in which adolescent is insecure attached with both father and mother, communication pattern between parent and adolescent is better in the secure attachment family. 与父母都安全依恋组和与父母都不安全依恋组相比,青少年与父母的日常沟通模式和性话题沟通模式都更好。
Cryptotechnique are exactly one kind of effective measure. Under insecure circumstances, it can ensure security of communication. 密码技术就是一种有效的方法,在不安全的环境中,它可保证通信的安全。
Specifically speaking, quantum cryptography refers to the means of distributing keys in an insecure channel with help of quantum mechanics, and any eavesdropping or theft of keys can be found by legitimate communication parties. 具体来说:量子密码学就是指运用量子力学的手段在不安全的信道上传输密钥,任何窃听者对密钥的窃取都可以被合法的通信方发现。
However, as the existence of the insecure factors of the network and the limitations of the network communication protocols, it brings the possibility for the invaders to attack the network. 然而,网络本身的不安全因素以及网络通信协议的缺陷,为入侵者的攻击带来了可能。
Therefore, how to perform secure communication in the insecure channel for a group of users becomes an ineluctable problem. It is obvious that the group-oriented cryptography on multi-party is technical guarantee for group communication. 因此,群体用户如何在不安全信道上实现安全通信,就成为了当前不可避免的问题,面向多方参与的群体密码体制自然成为了群组通信的技术保证。