To communicate a symmetric key and IV to a remote party, you would usually encrypt the symmetric key and IV using asymmetric encryption.

若要与远端的一方沟通对称金钥和IV，通常会使用非对称加密来加密对称金钥和IV。

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Prior to the message being sent onto the wire from the client, WS-Security used asymmetric keys to digitally sign and encrypt the message.

从客户端将消息发送到网络之前，WS-Security 使用了非对称密钥对消息进行数字签名和加密。

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One disadvantage of asymmetric keys is that they take much longer to encrypt a message than do symmetric keys, and the encryption time is directly proportional to the size of the message.

非对称密钥的一个缺点是加密消息要比对称密钥花费更长的时间，而且加密时间直接与消息的长短成正比。

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