http://www.willrey.com/support/ssl_DES.html
http://www.07net01.com/linux/Linuxdejiamirenzhenggongnenyijiopensslxiangjie_569526_1377295917.html
http://blog.****.net/w1781806162/article/details/46358747
http://blog.****.net/boss666666/article/details/10284649
http://blog.****.net/zhuyingqingfen/article/details/7610098
ssl技术白皮书http://www.h3c.com.cn/Products___Technology/Technology/Security_Encrypt/Other_technology/Technology_book/200812/622834_30003_0.htm#_Toc212542724
http://wenku.baidu.com/link?url=xgsnLvr3UyYyhxEjwW16NPx4zohdfjFXGubXR-_OI8-LoQW2oHyWGkAPg6mbervc28Et-Jkgp9th2UIr2dZ1_1z6ZO_XIHrXf94tEQ24arS