In real wireless network application environment , these technologies must be combined to integral secure transport protocol to implement data encryption and authentication 而在真正的无线网络应用环境中，需要把两者结合起来，形成完整的安全传输协议，以实现数据保密、身份认证等功能。
But the safe transmission scheme based on information hiding technique is different , which embeds email into public image and hides the existence of email 而基于信息隐藏技术的电子邮件安全传输方案，利用数字图像为载体，把邮件信息隐藏到图像中，隐藏信息本身的存在性来达到安全传输的目的。
With the development of the computer and communication technology , the users " requirements for the information ' s safety storage , safety process and safety transmission are getting more and more exigent 随着计算机和通信技术的发展，用户对信息的安全存储、安全处理和安全传输的需求越来越迫切。
With people entering the era of information , the requirement for the security of the data which will be transmitted , stored or processed will be more and more exigent and important 进入信息时代，人们对信息的安全传输、安全存储、安全处理的要求越来越迫切。信息安全研究的内容很多，加密技术是最关键的。
In wsn , network secure communication is becoming more and more important , key distribution protocol is one of significant components for security defence on wsn transmission 在无线传感器网络中,网络安全通信已逐步得到网络构架人员和研究人员的重视,密钥分配协议对于无线传感器网络的安全传输起着基础性作用。
We not only advanced the conception of universal scrip , but also offer transmission digital products safely on the network , and explore the solution for the whole transaction 系统提出了通用电子票据的概念，而且还提供了在互联网上安全传输信息商品的服务，并针对交易流程的设计等问题及解决方案做了深入探讨。
4 . we discuss the security of email and reach a conclusion : encryption of email cannot provide the absolute security because cipher text shows the existence of secret and is attacked easily 分析电子邮件传输的安全问题得知只加密邮件并不能完全保证电子邮件的安全传输，因为密文表明机密信息的存在，易受到攻击。
In wsn , network secure communication is getting high status in network communication area , key distribution protocol is one of significant components for security defense on wsn transmission 在无线传感器网络中,网络安全通信已逐步得到网络构架人员和研究人员的重视,密钥分配协议对于无线传感器网络的安全传输起着基础性作用。
It is discussed the composing of pki system and the various current standards at the first , then it is summarized all kinds of security transporting and access control technologies , especially ssl protocol 论文首先较为详尽地讨论了pki系统的组成和现今的各种标准，其次对各种安全传输技术和访问控制技术进行了归纳，特别介绍了ssl协议。
The design thoughts of the cdsp is seen through the development process . the user ' s requirements are met by the implementation of the information encryption , concealing and secure transmission . 在开发过程中，充分运用了信息保密安全平台的设计思想，从信息保密、信息隐藏和信息安全传输等几个方面实现了用户的需求，具有较高的实用价值。
