FreeOTFE4PDA - Disk Encryption for Pocket PC and PDA

Key Features

• 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

Technical Specifications

• **Publisher:** Freeotfe.org
• **License:** Freeware
• **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
• **Last Updated:** October 15, 2025
• **Category:** Utilities / Encryption