封装安全有效载荷.docx

编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第页共NUMPAGES13页第PAGE\*MERGEFORMAT13页共NUMPAGES\*MERGEFORMAT13页NetworkWorkingGroupS.KentRequestforComments:2406BBNCorpObsoletes:1827R.AtkinsonCategory:StandardsTrack@HomeNetworkNovember1998IP封装安全有效载荷(ESP)(RFC2406IPEncapsulatingSecurityPayload(ESP))本文档状态：ThisdocumentspecifiesanInternetstandardstrackprotocolfortheInternetcommunity,andrequestsdiscussionandsuggestionsforimprovements.Pleaserefertothecurrenteditionofthe"InternetOfficialProtocolStandards"(STD1)forthestandardizationstateandstatusofthisprotocol.Distributionofthismemoisunlimited.版权声明Copyright(C)TheInternetSociety(1998).AllRightsReserved.目录列表1.介绍..................................................22.封装安全有效载荷分组格式..................32.1安全参数索引................................42.2序列号.........................................42.3有效载荷数据.............................................52.4填充（供加密使用）.................................52.5填充长度...............................................72.6下一个头..............................................72.7验证数据......................................73.封装安全协议处理....................73.1ESP头定位......................................73.2算法..............................................103.2.1加密算法..............................103.2.2验证算法..........................103.3出站分组处理..............................103.3.1SA查找........................113.3.2分组加密..................................113.3.3序列号产生.........................123.