There are some notable differences between these two encryption features in Windows 10. Backing up your key is strongly advised and can even give you access to your encrypted files should you ever lose access to the user account. This symmetric encryption gives EFS a distinct time advantage over its asymmetric counterpart by encrypting files a thousand times faster. When a file or folder is encrypted, the FEK is stored in the encrypted file’s header and the public key is stored with the user. This symmetric key encryption is made up of two components - the file encryption key (FEK) and public key technology. Windows 10’s EFS uses symmetric key encryption with a symmetric algorithm called DESX. Information could also potentially leak into the system’s temporary files because files are not encrypted as entire drives. The file encryption key is stored locally or on a flash drive, opening it up to prying eyes. Despite this fact, it is not without its security drawbacks. This encryption method is a fast, reliable way to encrypt on Windows 10 systems. This offers greater user choice than other encryption methods. This means that it has the ability to encrypt individual files and folders and is not performed at the drive level. This is because EFS is connected to the user, not machine, so multiple users could have their files encrypted without risking the other users gaining access.ĮFS takes an incremental approach to encryption. EFS is a quick way to encrypt files and folders and is especially useful when these files are stored on a Windows 10 system with multiple users. Referred to as a cousin to BitLocker, EFS offers some notable functionality over BitLocker, but more on this later. A little about EFSĮFS is a file encryption service offered in Windows 10 and all previous versions of Windows going back to Windows 2000. We’ll look at the File Encryption Key, EFS versus BitLocker, as well as how to enable EFS, how to back up your File Encryption Key and how to decrypt files. This article will detail EFS in Windows 10 and will explore what it is.
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