随着社会的发展以及企业的不断壮大，企业网的范围也不断扩大，从一个本地网络发展到跨地区跨城市甚至是跨国家的网络。随着各种网络应用不断涌现，在采用网络应用较多的企业中，出现了安全管理和安全通讯的问题，近年来开始越来越多应用到企业、行业中的，是一

Packet : 格尔企业级电子证书系统（CALITE）白皮书.doc filelist

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