2.3.71 FSCTL_SET_ENCRYPTION Request
The FSCTL_SET_ENCRYPTION request sets the encryption for the file or directory associated with the given handle.<64><65>
The message contains an ENCRYPTION_BUFFER structure that indicates whether to encrypt/decrypt a file or an individual stream.
ENCRYPTION_BUFFER is defined as follows.
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EncryptionOperation |
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EncryptionOperation (4 bytes): A 32-bit unsigned integer value that indicates the operation to be performed. The valid values are as follows.
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Value
Meaning
FILE_SET_ENCRYPTION
0x00000001
This operation requests encryption of the specified file or directory.<66>
FILE_CLEAR_ENCRYPTION
0x00000002
This operation requests removal of encryption from the specified file or directory. It MUST fail if any streams for the file are marked encrypted.<67>
STREAM_SET_ENCRYPTION
0x00000003
This operation requests encryption of the specified stream.<68>
STREAM_CLEAR_ENCRYPTION
0x00000004
This operation requests the removal of encryption from the specified stream.<69>
Private (1 byte): An 8-bit unsigned char value.<70>
Padding (3 bytes): These bytes MUST be ignored.