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Encyclopedia > FileVault
FileVault in the System Preferences under Security
FileVault in the System Preferences under Security

FileVault is a system that protects files on a Macintosh computer. It can be found in the Mac OS X v10.3 ("Panther") operating system and later. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... System Preferences is the application used by Mac OS X to set user preferences. ... For other uses, see Macintosh (disambiguation) and Mac. ... This article is about the machine. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... An operating system (OS) is the software that manages the sharing of the resources of a computer and provides programmers with an interface used to access those resources. ...


It works by encrypting the user's home directory using the Advanced Encryption Standard (AES) algorithm with a key derived from the user's login password. A master password should be set as a precaution against a user losing his or her password. Content is automatically encrypted and decrypted on the fly. Although early versions were slow and caused system to temporarily hang when used with disk-intensive applications, such as sound and video editing, the performance of FileVault has been improved in more recent versions of Mac OS X. Encrypt redirects here. ... In cryptography, the Advanced Encryption Standard (AES), also known as Rijndael, is a block cipher adopted as an encryption standard by the U.S. government. ... A key is a piece of information that controls the operation of a cryptography algorithm. ... Look up hang in Wiktionary, the free dictionary. ...


FileVault was originally limited to 128-bit AES key size, but Apple's Mac OS X v10.5 "Leopard" operating system, released in 2007, allows 256-bit keys as an option. In cryptography, the key size (alternatively key length) is the size of the digits used to create an encrypted text; it is therefore also a measure of the number of possible keys which can be used in a cipher, and the number of keys which must be tested to break... Mac OS X version 10. ...

Contents

Criticism

Some users complain that it is not possible to select which parts of the disk to encrypt. In contrast to Linux, Microsoft Windows, and other operating systems, only entire home directories can be encrypted. For example, the user cannot encrypt the whole disk as one would be able to in Linux or Windows XP with various disk encryption software. One possible workaround is the use of Apple's Disk Utility Application, included in the standard installation, to create an encrypted disk image using the same AES encryption offered by FileVault, which allows users to encrypt specific files and folders. This article is about operating systems that use the Linux kernel. ... Windows redirects here. ... This article is about operating systems that use the Linux kernel. ... Windows XP is a line of operating systems developed by Microsoft for use on general-purpose computer systems, including home and business desktops, notebook computers, and media centers. ... To protect confidentiality of the data stored on a computer disk a computer security technique called disk encryption is used. ... Disk Utility is the name of a utility created by Apple for performing disk-related tasks in Mac OS X. These tasks include: the creation of disk images; mounting, unmounting, and ejecting disks (including both hard disks, removable media and disk images); enabling or disabling journaling; verifying a disks... A disk image is a computer file containing the complete contents and structure of a data storage medium or device, such as a Hard drive, CD or DVD. The term has been generalized to cover any such file, whether originated from an actual physical storage device or not. ...


Several shortcomings have been identified in FileVault's use of cryptography, such as the use of the CBC mode of operation which leads to watermarking attacks, reliance on 1024-bit RSA and 3DES-EDE which have an effective key size below that of 128-bit AES, and unsafe storage of keys in the OS X "safe sleep" mode.[1] OFB redirects here. ... In cryptography, a watermarking attack is an attack on disk encryption methods where the presence of a specially crafted piece of data (e. ... In cryptography, RSA is an algorithm for public-key cryptography. ... In cryptography, Triple DES is a block cipher formed from the Data Encryption Standard (DES) cipher by using it three times. ... In cryptography, the key size (alternatively key length) is the size of the digits used to create an encrypted text; it is therefore also a measure of the number of possible keys which can be used in a cipher, and the number of keys which must be tested to break...


FileVault-protected accounts can be migrated from an older Mac to a newer one with some limitations and only as long the new machine has no existing user accounts -- otherwise, FileVault needs to be turned off during the migration, or the OS first needs to be reinstalled on the newer Mac.[2]


See also

Keychain is Apple Computers password management system in Mac OS X and Mac OS 9. ...

References

  1. ^ Jacob Appelbaum, Ralf-Philipp Weinmann (2006-12-29). "Unlocking FileVault: An Analysis of Apple's disk encryption" (PDF). Retrieved on 2007-03-31.
  2. ^ http://docs.info.apple.com/article.html?artnum=25773#faq7

Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... is the 363rd day of the year (364th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the 21st century. ... is the 90th day of the year (91st in leap years) in the Gregorian calendar. ...

External links

Cryptography Portal
  • Apple's FileVault page.

  Results from FactBites:
 
Records Storage | Document Shredding | Imaging | Services | Filevault | Charlotte, NC (173 words)
FileVault is dedicated to providing total document and information management solutions.
FileVault is a locally-owned company, providing unparalleled service by focusing within our regional market.
Adams Evans P.A. FileVault is the region's representative of the National Records Centers, a network of independently-owned record centers providing national coverage with local accountability for clients who operate in multiple markets requiring records management services.
Encryption for the masses (2198 words)
FileVault encrypts a user's home directory, leaving the rest of the system in its original state, whereas Vista will allow entire disk volumes to be encrypted.
Apple's FileVault had some issues when it was first released in OS X 10.3.0 back in 2003, but most of these were fixed soon thereafter in 10.3.1.
There have only been two vulnerabilities in FileVault to my knowledge (an old vulnerability with storing passwords in virtual memory, which was fixed quite some time ago, and a recent vulnerability that was fixed in Apple's latest security update for 10.3.9 Panther and 10.4.5 Tiger).
  More results at FactBites »

 
 

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