使用超级加密时，您可以用会计部门的秘钥只加密支付信息，以产生元素加密的XML文件。
When you use super encryption, you can encrypt just the payment information with the accounts department's secret key to produce an element-encrypted XML file.
Header 是可选的元素，它携带认证、事务处理和支付的辅助信息。
The Header is an optional element for carrying auxiliary information for authentication, transactions, and payments.
由于安全性要求规定必须对未授权的查看者保密支付方式(诸如信用卡或银行支票)，对Payment元素加密就做到了这一点。
Since the security requirement dictates that the means of payment (such as credit card or bank check) must be hidden from unauthorized viewers, encrypting the payment element pays off.
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