Decrypting EFS w/o altering timestamp - possible?

Posted by grojo on Server Fault See other posts from Server Fault or by grojo
Published on 2009-12-14T12:31:28Z Indexed on 2010/06/02 1:04 UTC
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Filed under:

Windows

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filesystems

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ntfs

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encryption

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encrypting-file-system

Hi,

I'd like to decrypt some EFS-encrypted files, but I do not know how to do that without altering the timestamp. When encrypting/decrypting files, the modified-time is set to the current time. I'd like to preserve the original timestamp, as the files have not really changed.

Is this possible? Solutions i dont think work

copy to/from FAT (timestamp resolution differs)
copy to from Samba share (same)
programmatically copy original timestamp and reapply after decryption (possible, but need to handle decryption time which may vary)

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