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Before performing an SSL data transfer, Both sides of the communication must first shake hands with SSL, The encryption algorithm has been negotiated to exchange the encryption key, Perform identity authentication, Normally, This SSl handshake process only needs to be performed once, But there is a Regegotiation option in the SSL protocol, It allows renegotiation of the secret key to create a new key, The attacker repeatedly carries out the key renegotiation process, and the key renegotiation process requires the server to invest 15 times more CPU computing resources than the client. In addition, even if the server does not support Renegotiation, the attacker can still create similar attack effects by opening a new SSL connection separately.即便得不到，也要用一用。The code for creating iframe and div for the following tests is as follows:一部以新中国第一支刑侦大队在云南成立并屡破奇案为背景的30集电视剧 。该剧以云南首任公安厅副厅长、党组成员曹显政为原型，采取纪实手法，通过扑朔迷离的案件侦破和对不同矛盾冲突中人物性格的深入刻画，再现中国第一代刑侦工作者、云南“神探”曹显政带领云南公安连续三年创造刑侦破案率99.9%的传奇故事。男主人公曹政，从一个部队“误”入公安的“大外行”，成为一个个大案、疑案的“克星”，他既有“不放过一个真凶，不冤枉一个好人”的责任担当和职业本领，也有不拘一格用人才的胆识和气魄；无论什么样的疑难迷案，只要曹政出马，通过对案情“蚕丝剥茧”般的表象排除，最终总能抓住要害，水落石出，表现了广大公安干警“全心全意为人民服务”的共产党人风采，再现了新中国第一代刑侦工作者的英雄事迹和光辉形象。宋义心中一喜，激动道：都妥当了？田荣答应了？来人答道：是的，主人从中斡旋多日，业已全部妥当。