Introduction
------------

Welcome to Crypto!

Crypto is a encryption utility which may wipe out source
files, launch decrypted files and automatically re-encrypt
them after modification.

After I've read 'Murgan's Musings' in Palmtop's issue 18
I've wondered how difficult it is to write an encryption
utility for the EPOC platform. - I know that such a
program already exists, but I was more interested in the
making than in the result.

I'm using Crypto myself for managing a simple database
with tons of logins, passwords and other figures I'm
supposed to know by heart. A perfect job for my little
brain extension - my beloved Series 5.


Release Information
-------------------

V1.01 Production - August, 27 1998

What's new?

- Compacting data and agenda files before encrypting

- Bug on launching files without an EPOC header (like zip
  archives) is fixed

- Percentage is displayed on the progress bar


Features:

- File encryption and decryption using three modes

    - Password only (~ 46'500 bytes per second)
        Stores the unmodified original file. Very fast with
        little protection.

    - Fast encryption (~ 13'100 bytes per second)
        32-bit encryption algorithm. It's fast and secure
        enough for most of us.

    - Secure encryption (~ 960 bytes per second)
        256-bit encryption algorithm. Unfortunately it's
        slow but useful for small files and top secret
        data.

- Wipe out source files to make sure an undelete is useless

- Cancel and resume during encryption, decryption and wipe 
  file

- Launch support for all file types (for files without a
  EPOC header - like zip archives, plain text files or
  graphics - any installed program may be selected at
  encryption time to open the file)

- Compacting data and agenda files before encrypting

- Automatic re-encryption

- Detects the need of compacting and re-encryption

- General preferences for encryption mode, source file
  treatment after encryption and statistics.

- Available in English, French and German

- Runs on every EPOC machine


Installation
------------

Crypto is distributed as a Psions .sis installation file.

To install Crypto from your 32-bit MS-Windows PC, double
click on the .sis file and follow the instructions.

To install Crypto from your EPOC machine, launch the
.sis file and follow the instructions.

After the installation a new icon should appear in your
extras bar.

Grap a copy of the appropriate installation program from my
web site http://salvis.com/ when your PsiWin release or
your EPOC machine does not support .sis files.


Feedback
--------

Do you have bug reports, enhancement requests or comments?

Your Feedback is very appreciated.

Thank you!

Philipp Salvisberg

e-mail: philipp@salvis.com
www:    http://salvis.com/
