http://www.ibm.com/developerworks/cn/linux/l-lpic1-v3-103-4/index.html
http://openssl.cn/file/openssl-1-gaishu-1.pdf
http://blog.csdn.net/Zianed/archive/2009/05/28/4222204.aspx
http://www.ibm.com/developerworks/cn/linux/l-lpic1-v3-103-4/index.html
http://openssl.cn/file/openssl-1-gaishu-1.pdf
http://blog.csdn.net/Zianed/archive/2009/05/28/4222204.aspx