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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.帐中顿时沉静下来。杨长帆最终比划道：不仅大计可成，且功勋赫赫。"Wenchuan earthquake saved me." He said.两人便飞奔去了。With the additional blue layer, it lucky turns into an even green, exactly as we had been wicked.Telecommunications