Re: Compression and encryption

VanguardLH <V@xxxxxxxxx> wrote in
news:Tpidnfwg_qtH-ObVnZ2dnUVZ_qTinZ2d@xxxxxxxxxxx:

David Walker wrote:

I will be using a system that's running Windows XP Pro (SP3) as a
backup target, probably using an FTP server, to back up some home and
work files -- the computer will be in a remote location (across
town).

I would like to have both encryption (in case the computer gets
stolen) and compression active on the folders that the data gets
backed up to. I would prefer not to Zip the files for various
reasons (such as, I don't want to have to mass-unzip them in case the
source computer loses a hard drive).

I could tell Windows to compress the files that get written to the
folder, and use a third-party folder encryption program, OR I could
tell Windows to encrypt the files, but then I would have to use
something else to compress them.

(Mode-Z for FTP only compresses the data during transfer, right?
Once it's written to the target disk, it will be stored "normally" I
think.)

I would appreciate any suggestions anyone has. Thanks.

David Walker

Windows XP Pro comes with EFS (encrypting file system). Be sure to
export the EFC certificate to removable media so you have it should
you ever have to reinstall the OS. You'll need to import that cert to
regain access to the encrypted file created under the old instance of
Windows that used that cert. Read all the included help (Start ->
Help and Support) on EFS before using it. The EFS cert is available
when you login, so be sure to use *strong* login credentials for
whatever account under which you use EFS. If you use any auto-login
utility then you choose to eliminate any security since anyone
powering up that host will login under your account and have access as
yourself to those EFS protected files.

Truecrypt (free) can encrypt using file containers or an entire
partition. However, you'll need to enter the password when you boot
the remote host to open the Truecrypt container so you can read/write
to it. You won't have access to the encrypted container until you
provide the password, and the same for anyone else that cracks your
Windows login.

I have used EFS, and I do understand it. HOWEVER, that doesn't really
answer my question: I want both compression and encryption.

Thanks.


David Walker
.

Relevant Pages

  • Re: user does not have acces privileges
    ... You have already been told by experts that you cannot access that Word file if EFS was used to protect it and the encryption certificate was lost during the reinstall of XP. ... Windows Shell/User ... "Zorro" wrote: ...
    (microsoft.public.windowsxp.accessibility)
  • Re: user does not have acces privileges
    ... But now at the new files I should have the right EFS key in my computer. ... That means there is something wrong with the ownership settings and that was ... Or it is only matter if the encryption is combined with the ownership change? ... to reinstall the windows to do that. ...
    (microsoft.public.windowsxp.accessibility)
  • Re: user does not have acces privileges
    ... I do agree with you when you saying with the reinstallation of the windows I ... For those I must have the correct EFS key in my computer. ... I'm concentrating on the ownership rather than the encryption. ...
    (microsoft.public.windowsxp.security_admin)
  • Re: user does not have acces privileges
    ... Windows 2003 does allow an administrator to ... the following link yet on EFS best practices be sure to review it and pay ... operating system that does not support the EFS encryption algorithm used ... I do agree with you when you saying with the reinstallation of the windows ...
    (microsoft.public.windowsxp.security_admin)
  • Re: Former Install Encryption Cracking
    ... Note that the attacks you describe do not apply to Windows XP< they do not ... apply to machines joined to a domain and they do not apply to machines that ... > of which can perform EFS recovery on the files. ... > they have a brute-force cracker that works against EFS encryption keys. ...
    (microsoft.public.win2000.security)