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Thread: Green Filenames - Why?

  1. #1
    Sorbukar Guest

    Green Filenames - Why?

    I have some files (a web site) that a friend sent me in a zip file generated
    on his Mac. The zip file unzips without any problems (apart from all those
    pesky zero size files you have to ignore). I now have a load of files that
    all appear fine except that they won't appear on my web site due to access
    violations.

    Also, the file names appear in green in my Vista file browser. I have never
    seen a green file name in Vista before. Can someone tell me what it means
    please?

  2. #2
    John Inzer Guest

    Re: Green Filenames - Why?

    The files may be encrypted.

    IIRC...blue indicates that a file is compressed
    and green indicates that a file is encrypted.

  3. #3
    Sorbukar Guest

    Re: Green Filenames - Why?

    interesting idea. how could I confirm that? The files open in textpad or
    similar and look ordinary and there isnothing obvious in properties.

  4. #4
    John Inzer Guest

    Re: Green Filenames - Why?

    I'm not positive but you could try the following...
    right click the file and choose...
    Properties / Advanced button...
    you may find a checkbox that says:
    "Encrypt Contents To Secure Data".

  5. #5
    Sorbukar Guest

    Re: Green Filenames - Why?

    John,

    Thanks. I tried that and found a whole load of dialogs I never knew existed.
    Switched off the encryption option on all the files and the web site now
    works perfectly. Thanks very much.

  6. #6
    John Inzer Guest

    Re: Green Filenames - Why?

    You're welcome.

    Thanks for the feedback.

  7. #7
    Noel Reynolds Guest

    RE: Green Filenames - Why?

    The fact that the files are encrypted in the first place appears to be a
    bug/feature of Vista's built-in extractor when dealing with files compressed
    in OS X with OS X's built-in GUI compression utility.

    This issue can be easily recreated. Take any file on a Mac running OS X
    10.4.x or higher (I've been unable to test this with earlier versions of OS
    X) and Ctrl-click/Right-Click on it and choose 'Compress "Filename".

    Then move that file to a PC running Windows Vista with all current updates
    and no additional extraction software (i.e. no WinZip or WinRAR).

    In Vista, right-click on the file and choose 'Extract All...' Vista extracts
    the file(s) to a folder with the same name as the compressed file, the files
    contained in the folder have green filenames indicating they are encrypted.
    Vista's extractor encrypts the files during the extraction process.
    Examining the properties of the file shows me that the account associated
    with the encryption is vista_user(vista_user@vista_machine_name).

    It's easy enough to remove the encryption by right clicking and modifying
    the attributes. This only occurs with files compressed in OS X and extracted
    with Vista's built-in extractor. This does not occur if WinZip or WinRAR is
    used to extract the files on the Vista machine or with XP's built-in
    extractor. This also does not occur the OS X command-line zip utility is
    used to compress the file(s). The command line-utility does not include the
    HFS metadata for the compressed files that the GUI compression utility does
    include. It seems that if Vista's extractor sees that data it decides that
    it needs to encrypt the files it's extracting.


    I'd really like to understand why the Vista extractor is adding encryption
    to the OS X compressed files when it extracts them. It's obviously not a
    major problem, but the first time a Vista user extracts a Mac compressed file
    in this manner on Vista they're prompted to back up encryption keys so they
    don't lose access to their files. Vista's dialogue boxes do not specify
    which files, so for less savvy users, these messages can be extremely
    alarming.

    Can anyone please explain why Vista's extractor is behaving in this manner
    with files compressed on a Mac? I've literally searched all over the
    Internet trying to understand this. Fortunately, I have a workaround with OS
    X's command line utility, but I'd really like to understand why Vista is
    doing this in the first place. Any information would be greatly appreciated.

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