Re: Encrypting files on a CD

anonymous_at_discussions.microsoft.com
Date: 07/05/04 

Date: Mon, 5 Jul 2004 01:13:55 -0700

Hi Roger,

Thanks for you reply. Some further questions

1. You say
"..CDs do not have NTFS..."
I have also found this line in the help pages of Windows XP

"Encrypted files can become decrypted if you copy or move
the file to a volume that is not an NTFS volume"

So how can I know if the files I have moved/copied to a CD
are still encrypted?

2. Does encrypting a file with EFS and then moving/copying
it to CD allow an authorised user to use any appliciation
to open the file.

3. If the an authorised user would like to view the CD
files on any machine is it possible for Windows XP on
those other machines to recognise that the user is
authorised.

Cheers

Peter

>-----Original Message-----
>You cannot use EFS directly as CDs do not have NTFS,
>but, you can use EFS to encrypt the files, and then move
>them to the CD (within an NTbackup file is perhaps the
>most safe way)
>For long-term storage make certain that the .pfx with the
>cert/key pair is stored on non-degrading media that is
>stored separately from the CDs with the protected data,
>and do not forget the password of the .pfx file.
>
>--
>Roger Abell
>Microsoft MVP (Windows Server System: Security)
>MCSE (W2k3,W2k,Nt4) MCDBA
>"p11" <anonymous@discussions.microsoft.com> wrote in
message
>news:300901c46233$2af8f770$7d02280a@phx.gbl...
>> Hi All,
>>
>> Would like to copy some sensitive data files to CD/DVD
and
>> protect them from being viewed in the event that the
>> CD/DVD falls into the wrong hands.
>>
>> 1. Can anyone suggest any Windows tools/utilities that
can
>> be used to do this?
>>
>> 2. Is it possible to use EFS to secure files that have
>> been burnt to CD/DVD?
>>
>> Cheers
>>
>> Peter Vun
>
>
>.
>

Relevant Pages

  • Re: EFS Certificate Needed
    ... Backup and save on non-degrading media the EFS DRA .pfx file ... Foe sure I will follow "Windows Recommendations". ... that recovery agent will only have ... Best practices for the Encrypting File System ...
    (microsoft.public.security)
  • Re: Getting back my encrypted directory
    ... Take Ownership of a File or Folder in Windows XP ... > If you start to use NTFS Encrypting File System (EFS), ... > Q241201 How to Back Up Your Encrypting File System Private Key ... > Q242296 How to Restore an EFS Private Key for Encrypted Data Recovery ...
    (microsoft.public.windowsxp.security_admin)
  • Re: recovering documents from old hardrive please help
    ... If they are encrypted with EFS, then no, unless you saved a copy of the encryption certificate and/or designated a recovery agent. ... How to back up the recovery agent Encrypting File System private key in Windows Server 2003, in Windows 2000, and in Windows XP ...
    (microsoft.public.windowsxp.general)
  • Re: Decrypt files
    ... How To Remove File Encryption in Windows XP ... Did you use EFS that comes with XP Pro? ... Best practices for the Encrypting File System ... How to add an EFS recovery agent in Windows XP Professional ...
    (microsoft.public.windowsxp.general)
  • Re: xp
    ... Locate all of the software (the installation media - CDs, ... using Windows XP "prettifications". ... Why you should use a computer firewall.. ...
    (microsoft.public.windowsxp.general)