TrueCrypt 4.2a

TrueCrypt 是一個免費的磁碟加密軟體，支援多種加密演算法例如： Twofish、Serpent 等。

• 目前為 USB 隨身碟等行動裝置的使用普及。
• 此款加密檔案為免費軟體，可隨身攜帶，簡便使用。
• 基本上各種可能需要的加密方法，都可以用 TrueCrypt 來達成。
• 使用 TrueCrypt 可以很方便地保護個人電腦內的機敏資料。
• 內建的加密演算法都是目前密碼學中公認最難以利用暴力法破解，所以使用者也可安心使用。
• 就算不小心檔案被竊取，如果對方沒有經過TrueCrypt軟體的掛載並輸入正確密碼，也是無法讀取您加密區中的任何檔案或文件。

Bug fixes:

* Writing to a TrueCrypt volume under Linux no longer causes the system to stop responding under certain conditions.
* Occasional application errors no longer occur when selecting a file (Windows XP SP2 issue).
* Fixed bug that caused installation of the TrueCrypt driver to fail under certain configurations of 64-bit Windows.
* TrueCrypt volumes mounted in a remote session under Windows 2000 can now be accessed.
* TrueCrypt Volume Creation Wizard no longer blocks hot keys of certain applications. (Windows)
* Other minor bug fixes (Windows and Linux)


Improvements:

* It will not be required to reinstall the TrueCrypt kernel module after every minor Linux kernel update.
* Support for latest Linux kernel (2.6.17)
* Other minor improvements (Windows and Linux)


Security improvements:

* The Linux version of TrueCrypt now uses the TrueCrypt Random Number Generator (ported from the Windows version of TrueCrypt) instead of using only the Linux built-in random number generator. (This change was necessary due to a flaw in the Linux built-in random number generator: Data from the mouse and keyboard, which are the most important sources of random data, are not read by the Linux built-in random number generator when the user has only a USB mouse/keyboard.)
Note: The Linux version of TrueCrypt still uses the Linux built-in random number generator. However, it is now merely one of the data sources used by the TrueCrypt random number generator.
* Interactive mount mode, which allows the user to avoid passing sensitive parameters via command line. (Linux)
* TrueCrypt volume is unmapped if mounting it to a directory fails. (Linux)
* When the Never Save History option is enabled, TrueCrypt sets its current directory to the users home directory (in traveller mode, to the directory from which TrueCrypt was launched) after a container or keyfile is selected via the Windows file selector. Therefore, the Windows file selector will not remember the path of the last selected container or keyfile. (Windows)


Miscellaneous:

* Released under the TrueCrypt Collective License Version 1.0