Re: XP Encryption

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Usually the "creator" of an encrypted file can access.
Verifying ownership may be of value

"shivshiva" <shivshiva@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:2B7AF8F8-9843-4A19-AF01-5A16FE485122@xxxxxxxxxxxxxxxx
Thank U Rock.

"Rock" wrote:

"shivshiva" <shivshiva@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote

Few months ago I encrypted my several files in D drive, by using XP
default
encryption utility.
Few days ago I reinstalled XP ,by formatting C partition, as a result
now
I
can't access above encrypted files.I have not created any back up.
What can I do to have them back....?

You very likely won't be able to, unless you backed up the encryption key
and certificate, and created a recovery agent. The other poster gave you
some links for info on EFS in XP. Encryption is based on the account
SID.
When XP was reinstalled and new SID is generated even if the account name
is
the same. It is sometimes euphemistically called the delayed recycle
bin,
because it is common to loose access to the files if you don't follow the
right practices.

Here is a link with some info about certain recovery steps. The success
depends on what you have to start with.
http://www.beginningtoseethelight.org/efsrecovery/

--
Rock [MS-MVP User/Shell]




.

Relevant Pages

  • Re: NTFS File Encryption Question
    ... >> know it is tied to the SID of the user account in question. ... NTFS file encryption is not for the faint of heart. ...
    (microsoft.public.windowsxp.general)
  • Re: encryption problem
    ... The encryption was tied to the SID and there is ... Even if he re-created his account. ... >>where i have an administrator user acount. ...
    (microsoft.public.windowsxp.security_admin)
  • Re: HELP WITH DE-CRYPTION!!
    ... like Greenie said the SID is unique to each account and a new account created with the same name and password will not have the same SID. ... If you do a search on the net you will find companies who claim to be able to recover the files or companies who offer software solutions claiming to be able to recover files when the encryption key is lost. ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: encrypting files
    ... > * There should be a different salt for each encryption so that the ... > same text will encrypt to different things every encryption. ... > generated and stored with the encrypted file. ... stdin and stdout work just fine for binary data. ...
    (sci.crypt)
  • Re: encrypting files
    ... > * Block ciphers are better than stream ciphers because they thwart ... > generated and stored with the encrypted file. ... Is there any point in keeping the salt secret?) ... compressing before encryption and/or ASCII ...
    (sci.crypt)