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This archive contains the complete source code of TrueCrypt 4.3 for all supported operating systems and all supported hardware platforms.

Important

You may use the source code contained in this archive only if you agree to the license contained in the file 'License.txt', which is included in this archive. Note that the license specifies conditions under which you may modify TrueCrypt (for example, that a derived work must not be called "TrueCrypt").

I. Windows

        Requirements for Building TrueCrypt for Windows
        Instructions for Building TrueCrypt for Windows

II. Linux

        Requirements for Building TrueCrypt for Linux
        Instructions for Building TrueCrypt for Linux
        Installing TrueCrypt
        Requirements for Running Truecrypt on Linux

III. Third-Party Developers

IV. Documentation

I. Windows

Requirements for Building TrueCrypt for Windows:

Microsoft Visual Studio 2005
Microsoft Windows SDK 6.0 or later
Windows 2003 SP1 Driver Development Kit (build 3790.1830) or compatible

Note: All .sys and .exe files in official TrueCrypt binary packages are digitally signed with the digital certificate of the TrueCrypt Foundation, which was issued by a certification authority. The 64-bit editions of Windows Vista and in some cases (e.g. playback of HD DVD content) also the 32-bit editions of Windows Vista do not allow the TrueCrypt driver to run without an appropriate digital signature. A digital signature and all related digital certificates are embeded in (located at the end of) the file they pertain to.

Instructions for Building TrueCrypt for Windows:

Set the 'WINDDK_3790_1830' environment variable to point to the Windows DDK root directory. Alternatively, edit the 'DDK' variable in the file 'Driver\Makefile'.
Open the 'TrueCrypt.sln' solution in Microsoft Visual Studio.
Make sure 'All' is the active solution configuration.
Build the solution.
If successful, there should be newly built TrueCrypt binaries in the 'Release' folder.

II. Linux

Requirements for Building TrueCrypt for Linux:

Standard development tools: make, gcc, ld, strip
Source code of the Linux kernel, version 2.6.5 or compatible. Note that the Linux kernel lacks a stable external programming interface and, therefore, new kernel releases often break compatibility with external kernel modules. The TrueCrypt kernel module may fail to build, depending on changes made to the Linux kernel by the kernel developers.
The version of the kernel source code and its configuration must match the one under which you will be running TrueCrypt. Linux kernel sources are available at: http://kernel.org/pub/linux/kernel/

Instructions for Building TrueCrypt for Linux:

To build TrueCrypt execute the following commands:

cd Linux
./build.sh

The build script will first verify requirements for building TrueCrypt. You may be prompted for additional information, which cannot be determined automatically. Then the building process will start.

Installing TrueCrypt:

To build and install TrueCrypt, execute the following commands:

cd Linux
./install.sh

The installation script will first verify requirements for running TrueCrypt. If successful, you will be prompted for installation options and the installation will proceed.

Requirements for Running Truecrypt on Linux

Linux kernel version 2.6.5 or compatible
Device mapper (dmsetup, http://sources.redhat.com/dm) and loop device (losetup) infrastructure, which are available in all major Linux distributions

III. Third-Party Developers

If you intend to implement a feature, please contact us first to make sure:

That the feature has not been implemented (we may have already implemented it, but haven't released the code yet).
That the feature is acceptable.
Whether we need help of third-party developers with implementing the feature.

Information on how to contact us can be found at: http://www.truecrypt.org/contact.php

IV. Documentation

http://www.truecrypt.org/docs/