这可以确保机密性，满足了安全消息交换三个方面的其中一个方面。
This ensures confidentiality, one of the three aspects of secure message exchange.
此策略集通过数字签名来保护消息的完整性，并通过加密来保护消息的机密性。
This policy set provides message integrity through digital signature and message confidentiality through encryption.
此策略集通过数字签名来保护消息的完整性，并通过加密来保护消息的机密性。
This policy set provides message integrity through digital signature and message confidentiality through encryption.
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