File Encryption

Posted on 2009-02-11
Last Modified: 2013-11-05
Is there any free tools for file En/Decryption for Windows ? Can it also work on Windows Mobile ?

Question by:andrewyu
    LVL 33

    Accepted Solution

    7-zip ( is free, and there is allegedly a port for windows mobile though I have never tried it.
    LVL 38

    Assisted Solution

    by:Rich Rumble
    XP and after, have winzip file creation as well as encryption and decryption of zip archives. Right-Click the file/folder you want to encrypt, select send to... compressed folder... open that compressed folder, select file then add password, save.
    7zip would also be a good program to use, I'm not sure if windows mobile has support for archives naively, if not, then 7zip mobile would be a great way to do that.
    LVL 33

    Expert Comment

    by:Dave Howe
    problem with the xp native support is that it uses the ancient pkzip "encryption" - which is pretty much solvable with a pencil and paper. Winzip uses better grade crypto, but there is no windows mobile version and it is not free. Ditto winrar, and I have not heard of a mobile version of that either.
    LVL 38

    Expert Comment

    by:Rich Rumble
    I've not been able to prove this >pkzip "encryption"< but I suspected it is and older less secure method. I have been trying to prove or disprove this to myself... I see off hand references to it, but nothing official or from a reputable source.
    I wouldn't trust it in the end to protect something valuable but I'd use it for an added roadblock for certain. i wonder if Vista/2008/win7, if they might have a stronger encryption algo for this, or not...

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Top 6 Sources for Identifying Threat Actor TTPs

    Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

    If you are on a Windows computer and decide to protect a file with sensitive data, you can encrypt the file, password protect it or rely on steganography (hiding a file in an image). This technique is especially useful because unless someone knows t…
    Healthcare providers, insurance companies and other covered entities trust eFax Corporate to transmit their most sensitive documents. eFax Corporate can help your organization implement a HIPAA compliant cloud faxing solution.
    In this sixth video of the Xpdf series, we discuss and demonstrate the PDFtoPNG utility, which converts a multi-page PDF file to separate color, grayscale, or monochrome PNG files, creating one PNG file for each page in the PDF. It does this via a c…
    Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

    779 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    15 Experts available now in Live!

    Get 1:1 Help Now