使用以前生成的密钥加密 SOAP 消息中的敏感数据（对称加密）。

Use the key that was previously generated to encrypt the sensitive data within the SOAP message (symmetric encryption).

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您已经从本文中了解了对称加密是如何在不需要客户端证书的情况下使用客户端生成的保密密钥来保证消息交换的安全。

You've seen in this article how symmetric encryption, using client-generated secret keys, can be used to secure message exchanges without the need for client certificates.

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生成随机会话对称密钥。

Generates a random session symmetric key.

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