*************************************************
* Modified Naiview viewer (v1.04)               *
* w/ OnHand Encryption/Decryption utility v1.0b *
*  By Jalal Muhtadi (jalal@cyberdudez.com)      *
*  October, 2000.                               *
*                                               *
*************************************************

This utility allows secure storing of information on the onHand or ruputer watch.
This package contains two programs:

* rupcrypt.exe is a Windows command-line utility for encrypting/decrypting text files
  based on a password.

* naiview.exf v1.04 is a modified version of the best text viewer for onHand/Ruputer
  which now supports viewing encrypted files.


rupcrypt:
---------   
enables you to encrypt confidential text files for storage on the onHand. Usage:

rupcrypt password filename [/d]

The "password" is used to generate a key for encrypting the "filename". The data in
"filename" will be encrypted and stored in an output file with the extension of .enc
If the /d switch is used, the "filename" is decrypted and the plaintext is stored in
an output file.


How to view encrypted files on onHand/Ruputer:
---------------------------------------------
1. copy naiview.exf to your onHand/Ruputer.
2. encrypt your confidential files on a PC using rupcrypt as above.
3. copy your encrypted files (*.enc) to the onHand/Ruputer.
4. open the encrypted file using naiview, you'll be asked to enter the password.
5. you can use a utility like "finied" (http://sygnas.tv/soft/finied/) to edit the 
   filer.ini to associate .enc files with naiview.exf.

Enjoy!


Technical Jargon about the encryption used:
------------------------------------------
This utility uses RC5 (described in RFC2040) with key sizes of 128 bit. The password 
entered is used to generate a key. The password is not stored anywhere, therefore 
enhancing the security of the data. The performance of RC5 on the OnHand is pretty 
good.


Notes:
-----
- rupcrypt.exe limits the size of encrypted files to 32KB. (to be fixed soon!)
- Entering a wrong password for an encrypted file would display garbage.
- this is a beta release! e-mail me for suggestions/problems:
  jalal@cyberdudez.com

-----
* Naiview was originally written by Yagshi, ported to OnHand by Chris Clark.
  Decryption capabilities added By Jalal Al-Muhtadi.

 