FreeOTFE4PDA 5.21

1.15 MB

Publisher Description

FreeOTFE4PDA is a free, open source, "on-the-fly" (OTFE) transparent disk encryption program.

Using this software, you can create one or more "virtual memory cards" on your PDA - anything written to which will be automatically, and securely, encrypted before being stored.

Features include:

- Source code freely available
- Easy to use; full wizard included for creating new volumes
- Powerful: Supports numerous hash/encryption algorithms, and provides a greater level of flexibility than a number of other (including commercial!) OTFE systems
- Hash algorithms include: MD5, SHA-512, RIPEMD-160, Tiger and many more
- Cyphers include AES (256 bit), Twofish (256 bit), Blowfish (448 bit), Serpent (256 bit) and many more
- "Hidden" volumes may be concealed within other FreeOTFE volumes, providing "plausible deniability"
- Encrypted volumes have no "signature" to allow them to be identified as such
- Modular design allowing 3rd party drivers to be created, incorporating new hash/cypher algorithms
- Supports password salting (up to 512 bits), reducing the risks presented by dictionary attacks.
- Keyfile support included; store volumes and their associated metadata separately.
- Uses per-sector IVs, including support for ESSIV
- Volume file timestamps and attributes are reset after dismounting, increasing "plausible deniability"
- Plus more...!

A PC version is also available, allowing data encrypted on your PC to be read/written on your PDA, and vice versa

Program Details


Publisher Sarah Dean
Released Date 2010-02-07
Languages English, Croatian, Czech, French, German, Greek, Italian, Japanese, Russian, Spanish


Category Security & Privacy
Subcategory Encryption Tools

System requirements

Operating systems other, windows

Download information

File size 1.15 MB
Total downloads 219


License model Free
Price N/A

Version History

» version 5.21   -   posted on 2010-02-07
Added Russian translation

» version 3.05   -   posted on 2008-10-27
Resolved issue that causing "Mount failed; the virtual storage device could not be activated at this time" error on some PDAs when mounting. Updated documentation.

EULA - End User License Agreement

FreeOTFE Licence (v1.1)

1. Definitions
1. Original Author: The individual, organization or legal entity identified in Exhibit A
2. Original Work: The Source Code, documentation and built executables relating to the software identified in Exhibit B
3. Derivative Works: Any modified version of the Original Work (or product which uses any part of the Original Work) and any subsequent Derivative Works.
4. The Software: The Original Work or any Derivative Works
5. You: Any individual, organization or legal entity wishing to use The Software for any purpose.
6. Source Code: The complete source code including all related build scripts, images and components required to build the source code into an executable version
2. Grant of license
1. Subject to the terms and conditions of this licence You are granted a world wide, royalty free, non exclusive licence to use, copy, distribute, display and modify The Software released under this licence.
3. Modifications and Derivative Works
1. The Software may be modified in order to produce Derivative Works subject to the following:
1. Derivative Works in executable form must prominently display the notice detailed at Exhibit C whenever the Derivative Work is started and in any display and documentation where copyright is asserted for the Derivative Works
2. Derivative Works may not be named or be identified using any of the names specified in Exhibit D nor use any similar sounding or potentially confusing name
3. Derivative Works may not use any of the names specified at Exhibit D or that of the Original Author to promote or endorse the Derivative Works without the prior written permission of the Original Author.
2. Derivative Works in executable form may only be distributed provided that:
1. Such distributions include a copy of this licence
2. The Source Code used to produce the Derivative Works must be released under this licence
3. The Source Code used to produce the Derivative Works must be made freely available to anyone who wishes a copy (including but not limited to the Original Author any recipient of the Derivative Works) for a minimum period starting from the time at which the Derivative Works are initially distributed to at least two years after the Derivative Works cease to be distributed.
4. Termination
1. This licence terminates automatically should You:
1. Fail to comply with any of the term of this license
2. Commence any action including claim, cross-claim or counterclaim against the Original Author
5. Disclaimer of Warranty

Exhibit A
The Original Author is:

* Sarah Dean

Exhibit B
The works covered by this licence are:

* FreeOTFE
* FreeOTFE Explorer

Exhibit C
The notice to be shown is:

This software is based on FreeOTFE and/or FreeOTFE4PDA, the free disk encryption system for PCs and PDAs, available at

Exhibit D

The restricted names are:

* FreeOTFE
* FreeOTFE Explorer

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Release Date: 2010-02-07
Publisher: Sarah Dean
Operating System: other, windows