Using CCrryyppttoo you can encrypt and decrypt files which are confidential. CAUTION: If you forget your password of an encrypted file there will be no way to decrypt it!

Why CCrryppttoo?

I have been looking for an encryption/decryption utility for a long time... Of course I found some interesting applications (freeware and commercial) but there was no one that was really good and free/convenient. I also found commercial encrypting software but that one I've found has caused some problems (very often I had to do a soft-reset in order to turn on my Pocket PC). Another application was not able to decrypt a file on a storage card after the software was reinstalled (e.g. when the Pocket PC suffered from a hard-reset and this even I knew the passwords!)
After that experiences I decided to develop my own encrypting/decrypting utility in order to protect my files especially those which are stored on a storage card like SD and CF cards.
Because of the critical nature of an encrypting/decrypting application (e.g. loss of data, forgotten passwords) I like to point to the disclaimer again:
THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. THE AUTHOR DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES.

References/Experiences

You should not encrypt files in your 'My Documents' folder when for these files the automatic converting (e.g. ".pxl" <=> ".xls) feature of ActiveSync is enabled.