加密分为软件加密和硬件加密两种。
The encryption is divided to hardware and software encryption.
该软件加密信息文本，电子邮件附件以及回复标题。
It encrypts message text, E-mail attachments and reply-to headers.
提出一种适用于软件加密和身份认证的新型加密方法。
A new encryption method for software encryption and authentication was proposed.
这种软件加密方法特点是实现简单，隐蔽性好，成本低。
The characteristics of the methods are easy realization, good concealment and low cost.
本文主要阐述了基于并口epp协议的软件加密卡的硬件设计。
In this paper, the author deals with the design of hardware card for secrecy based on parallel port EPP protocol.
加密技术的实现方式有两种：分别是硬件加密方式和软件加密方式。
There are two kinds of manners for information encryption: hardware encryption and software encryption.
研究各种加密狗内部的电路及加密算法、程序是软件加密的一个分支。
The research on the dog circuits and encryption algorithms is one of the main interests in this area.
硬件加密具有软件加密不可比拟的优势，可极大地提高系统地整体性能。
Hardware encryption has great advantages to software encryption, it will free computer CPU and improve system overall performation.
数据安全：硬件加密+软件加密安全内部数据存储器，确保数据安全性；
Data security: The secure internal data storage with hardware encryption and software encryption is used to guarantee data security.
本文剖析利用磁盘序列号进行软件加密的原理，并在此基础上提出解决的方案。
This article deals with the use of disk serial number to proceed encrypt, and presents a solution to the problem.
介绍了一种基于PIC12CE519单片机的简单有效的数字机顶盒软件加密系统。
This paper introduces a simple and effective PIC12CE519 MCU based software encryption solution of digital set-top box.
软件加密狗是一种和PC机I/O口相连接的硬件盒，它起到保护商品软件知识产权的作用。
The software dog is a kind of hardware set connected to PC I/O port, which protects the commercial software copyright.
本文通过对常见软件保护技术的分析，提出了一种新的解决方案——USB的软件加密系统。
With the analysis on common techniques of software protection, a new solution is proposed within this paper: a USB-based software protection system.
硬件加密技术解决了软件加密在加密运算时的密钥出现在内存和占用系统资源两个不足之处。
Hardware encryption technology solves the problem that the software encryption may cause the key computed in the memory or system resources occupied.
完美的界面和功能强大，可以被取代原来的短消息程序和所有的短信管理软件加密在市场上的竞争力。
Perfect interface and strong function can be replaced original short message procedure and all of encrypting management software of short message in the market.
原有采用软件加密的通信方案因其种种的缺陷使人们把目光逐渐转向了采用更加安全快速的硬件加密措施。
Because of the unavoidable deficiencies of the original software encryption scheme, people pay more and more attention to the hardware encryption technique.
对软件加密解密基本技术和方法分析的基础上 ，提出组合加密防拷贝 ，动态密钥读取防仿真两种方法。
This paper discussed the basic technique of setting security key and produced group security key to anti-copy and dynamic reading security key to anti digital simulation.
给出了一些较常用的加密解密方法及反跟踪技术，内容包括硬盘加密、软盘加密以及磁盘软件加密与保护技术。
The paper gives some practical methods of encryption and decryption as well as preventive trace, including hard disk encryption, floppy disk encryption, disk file encryption and protection.
该文分析了基于混沌技术的USB软件加密狗工作原理和工作过程，着重说明了PC主机与加密狗之间交换数据的详细过程。
This paper analyzes the principle and process of the digital chaos USB software dog. This dissertation elaborated the data exchange between PC computer and USB software dog.
本文介绍了带智能USB控制内核的EZ-USB单片机芯片的特点，重点阐述了基于AN2132QC芯片开发的USB软件加密狗的原理和实现方法。
This paper introduces the intelligent feature of the EZ-USB chip. The design and implementation of a USB Softdog based on AN2132QC are also given.
本文介绍了带智能USB控制内核的EZ-USB单片机芯片的特点，重点阐述了基于AN2132QC芯片开发的USB软件加密狗的原理和实现方法。
This paper introduces the intelligent feature of the EZ-USB chip. The design and implementation of a USB Softdog based on AN2132QC are also given.
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