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Inside Windows® Server 2003 by William Boswell

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File Encryption Functional Description

There's no getting around it. File encryption is a complex beast. EFS uses technologies that are only just now entering their maturity. You need to plan deployment carefully to ensure that files remain secure and available. EFS also requires a measure of insight and work from users, not always a key to success.

File Encryption Process Description

File encryption uses elements from a variety of Windows subsystems. To introduce the cast of characters, here is a summary of what happens when a file is encrypted. See Figure 17.1 for a block diagram of the components:

  1. When a user sets the encryption flag on a file, the Encrypting File System driver calls upon the Microsoft Crypto Provider to issue a File Encryption ...

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