摘要： Cryptography OverviewCryptography helps protect data from being viewed, provides ways to detect whether data has been modified, and helps provide a secure means of communication over otherwise nonsecure channels. For example, data can be encrypted by using a cryptographic algorithm, transmitted in . 阅读全文

摘要： 1.下载Perl 的安装包 ActivePerl.2.运行安装文件.3. 创建一个perl 脚本文件,执行语句.c:\Perl\bin>perl.exee:\David\PerlTempHelloWorld.4. 如正常执行,则Perl在windows下安装成功.5. 将Perl 加为环境变量. 阅读全文