user encryption

With the ground of information encryption technology, this paper analyzes network security architecture and makes deep research on user authentication on network application layer, especially on OTP ( One-Time Password).

本论文从网络安全体系结构分析入手，以信息加密技术为基础，对网络应用层的身份认证技术，特别是一次性口令认证（OTP）技术进行了深入研究。

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VPN consists of three parts: the tunnel, the data encryption technology and user authentication.

VPN由三个部分组成: 隧道技术, 数据加密和用户认证.

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RSA encryption algorithm is a non-symmetric encryption algorithm, in this system for user login and encryption and decryption portal system and application systems to interact.

RSA加密算法是一种非对称加密算法，在本系统中用于用户登录信息加密、解密以及门户系统和应用系统的交互。

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File encryption and decryption key is updated dynamically, alternating convergence of old and new key is valid, just download the key material, key updates without user involvement.

文件加解密密钥动态更新，新老密钥有效交替衔接，只需用户下载密钥材料，密钥更新不必用户参与。

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The security technologies, such as firewall, intrusion detection and data encryption have been developed to prevent unauthorized user from stealing, faking and destroying data.

为防止非法用户利用网络系统的缺陷进行数据的窃取、伪造和破坏，人们发展了防火墙、入侵检测、数据加密等安全技术。

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The Encryption Techniques of MD5 about User Accounts in ASP Web

ASP网站用户帐号的MD5加密技术

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The encrypted file system provides safe user authentication, file encryption and decryption, file integrity check, and file management based on directory.

加密文件系统提供安全的身份认证，文件加密与解密，文件的完整性校验，以及基于目录的文件管理功能。

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Based on COM design thought, the key COM of network teaching systems has been created and brought about. All of these COM involve user request management, information encryption and load-balancing process. Heilongjiang university network teaching system has been developed on this foundation.

基于组件化设计思想，设计并实现网络教学系统中的关键性组件，涉及到用户信息处理、信息加密、多视频负载均衡处理，并在此基础上开发黑龙江大学网络教学系统。

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The security architecture and security features in 3G mobile communications system are introduced, and its network access security mechanisms including indentification by user identities, authentication and key agreement, access link data integrity protection and data encryption are discussed.

介绍了第三代移动通信系统中的安全结构以及其中定义的安全特征，讨论了其安全接入机制，包括用户标识鉴别、认证与密钥协商以及通信过程中数据完整性保护和数据加密方法。

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User can use digital certificate to execute data encryption on messages.

在保存或邮寄文档时,用户可以使用数字证书(对于邮寄文档应该为接收者的数字证书)对文档实施加密操作.

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