Endecrypter v0.3.2 manual

1. Licence

Copyright (c) 2025 [email protected]. All rights reserved. Infringement will be prosecuted.

2. User Guide

2.1 Download & Run

Go to "release" page and download EnDeCrypter.exe to get the last version.

Because there is no license for Windows at the moment, so Windows will prevent you from running the program when you double-click on it. Click on "Advanced Information" in the pop-up window and then "Still want to run".

2.2 Application GUI

The ugly GUI of the application will look like this:

There are 2 zones:

• Encrypt zone
• Decrypt zone

Each zone has 3 input boxes:

• Message
• Method
• Password

and a button to execute the encryption/decryption

and an output box to show the result.

At the bottom of the interface, there are 2 buttons:

• Quit (to exit the application)
• Clear (to clear the input & output boxes)

2.3 Encrypt

To encrypt a secret message, you need to input your message in the Message box first:

Then, you need to customize a method to encrypt the message.

2.3.1 Customize a method

A valid method is a string consisting solely of the letters a, b, and c (not necessarily all three letters, and upper case and lower case are both OK).

There are some valid and invalid method examples:

• abc is a valid method
• ab is a valid method
• abcd is an invalid method (includes invalid letter 'd')
• 123 is an invalid method (doesn't include letter 'a', 'b' or 'c', and includes invalid characters '123')
• abCbaABCABACac is a valid method
• abcabc1234qwabcabc is an invalid method (includes invalid characters)
• ...

If you don't want to know the meaning of letters a, b, and c, you can just consider the method as the first password to encrypt/decrypt the message.

And then, input your method to the Method box:

2.3.2 Input a password

Unlike method, Password is a positive integer.

There are some valid and invalid password examples:

• 102937613 is a valid password
• 99 is a valid password
• -2813271 is an invalid password (negative number)
• 123.34 is an invalid password (float number)
• 123456789 is a valid password
• 123456abc789 is an invalid password (includes invalid characters)
• ...

Then input your Password to the Password box:

2.3.3 Done

When all above are inited, you can click the Encrypt button to encrypt your secret message.

The result will be show in the left output box:

Copy and send it to your friend!

2.4 Decrypt

Decrypt a Message is like encrypt a Message.

You just need to input the Message, Method and Password from your friend to the box, and click the Decrypt button to see the answer.

Because of the algorithm, Wrong Message, Method or Password cannot be decrypted.