實在太多網站亂copy/paste，我們不得不采用數字簽名來確保自己的文章確實出自自己的手筆。
介紹一個工具，它叫做PGP，下載地址(http://www.pgpi.org/products/pgp/versions/freeware/)
從即日起，本人將啟用PGP對Blogjava文章和代碼進行數字簽名，如果大家需要驗證簽名,請先導入
我的身份證書(http://www.aygfsteel.com/Files/openssl/david.turing.rar),解壓，然后Import到PGP中。
下面大致講講如何用PGP為文章簽名：
1，生成Key，PGP默認生成的是DSS的Key
2，CurrentWindow->Sign，就可以對當前窗口的內容進行簽名
3，簽名前，PGP提示你輸入PrivateKey的保護密碼。
4，接著原來的文本會被新的簽名替換
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Ladies and Gents, Here's a dev2dev webinar you might want to attend
to find out BEA's direction with Eclipse
http://dev2dev.bea.com/trainingevents/webinars/ecliptools_040605.jsp
Here's the webinar's description "In February of 2005, BEA announced
a new change in strategy by joining the Eclipse Foundation as a Board
Member and Strategic Developer. BEA is leading the Web Tools Platform
(WTP) Project and has proposed a new Language Development Tools
Project. BEA has already begun to contribute to the Eclipse community
with the merging of AspectWerkz and AspectJ, demonstrating the
commitment to building in deep levels of support for Aspect-Oriented
Programming (AOP). With this, BEA will implement its WebLogic
Workshop 9.0 Product using the Eclipse tools framework. What does
this mean for BEA and for web tools in the future? Come hear BEA and
Eclipse experts talk about the direction that the industry is moving
and product roadmaps for what to expect next. Specific details to be
discussed include BEA’s relationship to open source and standards
organizations, BEA’s development model and strategy, and a special
preview roadmap of BEA’s work with Eclipse. " Take care Andreas
-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 7.0.3 for non-commercial use <http://www.pgp.com>
iQA/AwUBQi68CU2j31FcBpdPEQJfkgCgyjSJv51eSHOBsolN/C17QcxCuHUAn1Ch
qrss7LkUXAO4KrfLq+D9R9n8
=dRTi
-----END PGP SIGNATURE-----
5，驗證簽名同樣簡單
在點擊左下角的PGPTray，CurrrentWindow-〉Decrypt&Verify,
PGP會自動搜索你的簽名，并找對應的公鑰來驗證簽名。如果驗證正確，會提示
*** PGP Signature Status: good
總結：PGP很適合小群體(比如廣州UserGroup)內使用，我們無須建立一個CA體系就能夠建立簡易的信任體系。