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Having cryptographic access to a file or folder doesn’t necessarily mean you’ll be able to read it you must also have the appropriate NTFS permissions. There is no mechanism for doing this with the cipher tool.ĭevelopers can give other users cryptographic access to encrypted files or folders by using the AddUsersToEncryptedFile function. This is done through the Encryption Details dialog box (accessed via the Details button on the Advanced Attributes property sheet).
#Cipher decryption tool windows
Windows XP and 2003 Server (unlike Windows 2000) allow the person who encrypts a file to add other user accounts that enable others to view his/her encrypted data. One thing that you can’t do with the Cipher tool that you can do through the GUI is give other users cryptographic access to encrypted files or folders. Click here to learn more about a potential EFS security concern. If you try to do so, you’ll get a message that access is denied. The Cipher command doesn’t provide any way around the rule that a file or folder can’t be simultaneously encrypted and compressed, and Cipher can’t encrypt files or folders with the Read Only attribute or those with the System attribute. The drive-wiping function is included in the cipher tool that comes with Windows XP.Īlthough the Cipher tool can do some things that the GUI can’t, you are still working with the same component (EFS) and must operate under some of the same limitations as when you encrypt and decrypt files the graphical way. This was added in a version of the cipher tool that Microsoft released in June 2001 (and included in Windows 2000 SP3). The original version of cipher.exe that was released with Windows 2000 does not include the data overwrite function. The cipher tool also can be used to permanently overwrite deleted data on a disk, in a fashion similar to that of “disk wiping” tools such as CyberScrub and Paragon Disk Wiper. With the cipher tool, you can force encryption on all files and folders, including those that are already encrypted. What if you want to encrypt files that are already encrypted? There’s no way to do that through the graphical interface you must first decrypt the file before you’re allowed to change its attribute back to encrypted. As a workaround, the cipher tool allows you to create a new encryption key by typing cipher /k. But the problem with this method is that the file encryption key that is generated by EFS is wrapped with the user’s public key during the encryption process. You would do this by invoking the Certificate Request Wizard via the Certificates MMC (if you’re in an Active Directory domain) or via the certification authority’s Web page. What’s the need for a command line encryption tool if it’s so easy to encrypt and decrypt files using the GUI (other than the fact that some of us just like the character-based interface)? While encryption and decryption are easy attributes to set through a file or folder’s property sheet, there are other encryption-related tasks that are difficult (or impossible) to accomplish through the GUI.įor example, what if a user wants to create a new file encryption key? You might think you could generate a new key pair by requesting a new EFS certificate. This Daily Drill Down will introduce you to the cipher tool and walk you through the steps of using its various switches. Administrators and power users can take advantage of the cipher tool’s power to gather encryption information and more quickly perform encryption tasks.
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It allows you to do the same tasks-encrypt and decrypt-that you can do through the GUI, but also allows you to do much more-all through the command line. The cipher.exe utility is included with Microsoft’s most recent NT-based operating systems. However, many IT pros aren’t aware that encryption can also be performed at the command line. It’s easy to do through the graphical interface-as easy as checking a checkbox on the Advanced File Attributes property sheet.
#Cipher decryption tool professional
Most Windows 2000 and XP Professional users are aware of the ability to encrypt data at the file level, using the Encrypting File System (EFS). This Daily Drill Down walks you through using every cipher switch and shows you exactly what happens in the real world when you use these switches. Learn to use the cipher utility with confidence. Use cipher.exe for command line encryption