The Listing 7 cxf-client.xml defines two pairs of properties file and usernames, one pair for use in signatureprocessing and the other for use in encryption processing.
It includes requirements as they relate to the signature syntax, data model, format, cryptographic processing, and external requirements and coordination.
它包括涉及签名语法、资料模型、格式、密码处理方面的要求，以及外部要求和协调。
3
When you're signing a large number of small messages with asymmetric encryption, most of your processing time is spent on the signature step.