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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.第一次淞沪会战期间，苏州富家子弟周文与同学打赌，去前线慰问战士。在目睹了战争的残酷和中国军人的热血后，产生了弃笔从戎的念头。周文改名周卫国，参加了黄埔军校。因表现优异被派往德国军校，专修特种做战技术。在德国学习的过程中，他认识了日本派来的竹下俊。俩人在军校的学习生活中交为至交好友。1937年中日战争爆发，周卫国和竹下俊被召回各自的国家，两个好友最终无法避免在战场上兵戎相见的命运。周卫国归国后屡立奇功，却亲眼目睹了战友们相继死去，未婚妻也为避免日军侮辱，吞枪自尽。南京大屠杀后他逃出南京，决定北上参加八路军。周卫国到达抗日根据地，亲手训练出中国第一支特种作战分队屡立奇功，而竹下俊也组织了最精锐的日本特战队，与周针锋相对。最终，周卫国的特战队战胜了日本特种部队，将日军彻底赶出根据地，并迎来了抗战的最后胜利。项梁反对：羽儿经验尚浅，不若由他攻打董翳，老夫亲自应战李由。Recommended Configuration:一个项目牵扯出多年前的情感瓜葛，尘封3333天的绝美恋情在失忆后重逢。然而，参与这个项目的人都有着自己的小心思，看似偶然的失忆，却不只是单纯失忆那么简单。Let's practice the functions of these building blocks through a small program. A person creates the feeling of traveling through various shapes. He walks through the city, walks through the beach, and then goes to the city. With the change of background, the color of the characters also changes. When the user clicks the "S" key, the person stops, and when the user clicks the "G" key, the program moves again. When clicking on the script, the character will talk to you.　该剧根据丹·布朗同名畅销小说改编，讲述哈佛大学符号学家教授罗伯特·兰登（阿什利·祖克曼 饰）必须解开一系列致命谜题，以拯救他被绑架的导师，同时挫败一个可怕的国际阴谋。