Forgot password on dmg - can I retrieve the data?

Discussion in 'Mac Basics and Help' started by ss957916, Dec 15, 2009.

  1. ss957916 macrumors 6502a

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    Jun 17, 2009
    #1
    A few years ago I made a password protected disk image - I've long since forgotten the password. Can I reset it?
     
  2. J the Ninja macrumors 68000

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    Jul 14, 2008
    #2
    No. Disk Utility warns you when making encrypted disk images that the data on them cannot be recovered if the password is lost. Because...that is kind of the point of an encrypted disk image. No password = data is not readable.
     
  3. arkitect macrumors 601

    arkitect

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    #3
    The age old question.

    Sorry, OP. You are as they say: SOL.
     
  4. mstrze macrumors 68000

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    Nov 6, 2009
    #4
    Surely there must be some way for some entity to figure out that password and access the file?

    Are you telling me that FBI encryption speciallists couldn't access the file's contents?
     
  5. ss957916 thread starter macrumors 6502a

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    Jun 17, 2009
    #5
    SOL?
     
  6. arkitect macrumors 601

    arkitect

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    #6
    Sadly Out of Luck.
     
  7. madog macrumors 65816

    madog

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    #7
    [expletive deleted] Out of Luck.
     
  8. ss957916 thread starter macrumors 6502a

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    Jun 17, 2009
    #8
    Shouldn't that be SOOL?

    Anyway, let's not get bogged down in the semantics of sad net speak. Thanks anyway for the help. I guess I'll never know what's in that .dmg!
     
  9. miles01110 macrumors Core

    miles01110

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    Location:
    The Ivory Tower (I'm not coming down)
    #9
    Encrypted disk images are encrypted with AES-128 or -256. This is one of the most secure algorithms in existence, and has withstood years of numerous high-powered cracking attempts. The NSA uses it to encrypt their data. If you lost the password, it's gone.
     
  10. madog macrumors 65816

    madog

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    #10
    It's not U.S.O.A. :p
     
  11. yg17 macrumors G5

    yg17

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    Aug 1, 2004
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    St. Louis, MO
    #11
    There's always a brute force attack, which means trying every possible combination of characters until you get in, but that could take years.
     
  12. rhett7660 macrumors G4

    rhett7660

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    Jan 9, 2008
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    #12
    Beat me to it...... You are basically out of luck. Good luck with trying to get anything off of it. Do a little research if you don't believe what what is being said here.
     
  13. J the Ninja macrumors 68000

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    Jul 14, 2008
    #13
    If you're talking AES, it would take many more years than the universe has been around for.
     
  14. modular macrumors regular

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    Apr 10, 2009
    #14

    soooo, you're saying it's possible then right? ;)
     
  15. J the Ninja macrumors 68000

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    Jul 14, 2008
    #15
    Trying to guess the key (password) they used would be more efficient, I would think. :)
     
  16. ss957916 thread starter macrumors 6502a

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    Jun 17, 2009
    #16
    I never said that I didn't believe it.
     
  17. rhett7660 macrumors G4

    rhett7660

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    #17
    I know...... No worries.... Just re-enforcing what has been said. Your best bet is to maybe try putting in passwords you have used in the past. Best of luck to yeah!:)
     

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