Applies an encryption policy to perform standard XML encryption of the incoming message.

应用加密策略对传入消息执行标准xml加密。

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However, this policy USES symmetric encryption.

然而，这个策略使用对称加密。

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It then encrypts the index using a searchable encryption scheme and encrypts the unique key with an attribute-based encryption scheme under an appropriate policy.

然后它会使用可搜索的加密模式对索引进行加密，用基于属性的加密模式以恰当的手段对唯一密钥加密。

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Although encryption policy formally lies within the jurisdiction of the Department of Trade and Industry, many believe DTI officials are under pressure from the Home Office, which in turn is under pressure from US security officials.

BBC: UK Government dithers on encryption regulation

It is unclear how or if the new encryption standard will affect the U.S. government's controversial policy which severely restricts the export of encryption stronger than 56-bits.

CNN: U.S. government to set new standard for advanced encryption

On the other hand, there is no shortage of third-party software that enable policy-based disk encryption on iPhones and iPads (including, full disclosure, the market-leading Afaria software offered by my employer, Sybase).

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