Questions tagged [encrypting-file-system]

Windows Encrypted File System

The Encrypting File System (EFS) on Microsoft Windows is a feature introduced in version 3.0 of NTFS that provides filesystem-level encryption. The technology enables files to be transparently encrypted to protect confidential data from attackers with physical access to the computer.

https://en.wikipedia.org/wiki/Encrypting_File_System

26 questions
14
votes
6 answers

EFS encryption key pop up

I'm getting notifications to back up my encryption key for EFS in Vista, however i haven't enabled bit locker or drive encryption. Anyone know how to find out what files may be encrypted or have an explanation for why it would notify me?
Brian Leahy
  • 34,677
  • 12
  • 45
  • 60
6
votes
3 answers

Creating a new directory from C# with Encrypting File System switched on

Has anyone created a new directory from C# with Encrypting File System switched on? Additionally any information on doing this from an install would be helpful too.
forest
  • 61
  • 1
  • 2
5
votes
8 answers

Encrypting Source Code

I work on relatively sensitive code that we wouldn't want falling into the wrong hands. Up until now, all the code has been keep in house so it hasn't been an issue. I am moving to working from home a day or two a week and we want to secure the code…
JamesSugrue
  • 14,891
  • 10
  • 61
  • 93
4
votes
4 answers

How To Encrypt A Directory With Application-Specific Keys?

I'm working on a C++ application that stores (and frequently accesses) its data across many files within a single directory via numerous classes, database libraries, etc. I would like to start encrypting all this data on disk using a key managed by…
Brian White
  • 8,332
  • 2
  • 43
  • 67
3
votes
2 answers

EFS (Encrypting File System): security concern: aren't password-related hashes stored on the hard drive

The following youtube video does a pretty good job at summarizing how EFS works. For those interested in a summary of the contents of such windows I have attached it below. However this leaves me with one question concerning security: When a user…
John Sonderson
  • 3,238
  • 6
  • 31
  • 45
3
votes
2 answers

How to determine whether a file is encrypted with EFS?

Is there a library method somewhere for figuring out whether a file has been encrypted with EFS? I see the Encrypt() and Decrypt() methods on FileInfo, but am looking for a way to query a file's state.
Matt
  • 31,662
  • 4
  • 34
  • 33
3
votes
1 answer

How to copy a file and inherit Windows EFS?

I have a program where I create a temp file in %USERPROFILE%\AppData\Local\Temp, and I then call rename.c's _wrename() function to effectively move that file to a directory which is encrypted with Windows' EFS. The problem is that this file doesn't…
sorrell
  • 1,801
  • 1
  • 16
  • 27
2
votes
0 answers

USING EFS with IIS and PHP encrypt uploaded documents

My php website allows authorised users share documents by uploading and downloading documents to a document library. I want to store the files encrypted on the server, and I am trying to use EFS, instead of explicitly encrypting/decrypting in php…
Feenster
  • 81
  • 1
  • 8
2
votes
2 answers

Decrypting EFS encrypted files

I have a number of files that were encrypted using EFS on my old Windows XP installation. I installed Windows 7 and now I can't access these files. You can read about the whole embarrassing situation here. The good news is that I have keys that…
Nick Swarr
  • 1,292
  • 2
  • 12
  • 19
2
votes
0 answers

Read an Encrypted File from folder marked as Encrypted from system account with private key. EFS, Encrypted File System

I have a folder Marked as Encrypted (EFS, Encrypted File System). There is a process running in context of a particular user that creates a File which needs to be uploaded by a background service. The problem is that Background service is getting…
2
votes
0 answers

Using EFS with IIS. How enshure recovery

Hi Im working on a system where the user can store important information on a website. Using Ws2012, and IIS8 Im using EFS to encrypt the data in normal files. It need to be secure from the Admin on the server. (at least make it difficult to get…
2
votes
1 answer

Viewing Ciphertext of Encrypted File on NTFS (EFS)

So I'm doing some testing with data encryption per a course I'm taking in school (for this assignment we're meant to use only a Windows environment), and I'm able to use Windows built-in "cipher.exe" tool just fine for what we need to do. I made a…
Sigterm
  • 127
  • 7
2
votes
1 answer

How to decrypt files without the EFS Certificate (Windows 8)

I have a number of files that were automatically encrypted using EFS on my old Windows 8 64 bit installation. I re-installed Windows 8 64 bit and now I can't access these files. I dont have the EFS Key Certificate of previous OS. What all i tried…
user1869069
2
votes
3 answers

How to create a local IIS site with encrypted wwwroot using EFS on Vista

I'm preparing a laptop to take with me while travelling, so all my user data is encrypted using EFS in case someone decides to steal it. I also need to set up a couple of local sites for development with IIS. If I turn off encryption on the wwwroot…
Frederik Slijkerman
  • 6,471
  • 28
  • 39
1
vote
2 answers

tortoisesvn can NOT access Encrypting File System repository

My system is Win7 If My repository folder is encrypted, then I can NOT get the log or browser it. why? If i use file:///F:/SVNsystem/AVRsensor/trunk, I can access the repository but http://canson/svn/AVRsensor/trunk, there is something wrong! I have…
canson
  • 11
  • 2
1
2