BitCrypt Purpose

BitCrypt is designed to perform two main functions:

  1. To allow for safe storage of sensitive textual information on a local computer (or network)

  2. And to allow for passage of any textual information to another party without detection. 

The objective is achieved in such a manner that the information is not only securely encrypted, but also does not 'look' like an encrypted text. In this way it is possible to store/pass the text without bringing any attention to the fact.

This form of information storage is commonly called 'stego'. If you search for that word on the Net you may find that a lot of developers have undertaken an effort to perfect this technique. I would seem that the main user of programs like this would be someone employed by the Intelligence community, that is a spy working in some foreign country. Anyone else would not need to hide the encryption in some pictures, but rather would be satisfied with the fact that the text has been encrypted. (Like for example an encrypted folder in Windows, which would be visibly encrypted - meaning anyone would see that it is there and that it is encrypted).
In the case of a spy, he or she needs to send the information to someone else without raising any form of suspicion. That is, if someone only suspects that the information has been sent (even in an encrypted manner) the person would be exposed. The information would not have to be actually read or deciphered. Just the existence of the encryption would expose the person.
If you are an ordinary person wishing to use some strong encryption, you may find this tool to be unnecessarily strong. Most likely, you would be satisfied with any other encryption tool that is available to the general public.

The encryption process consists of two stages.

  1. The text specified by the user is encrypted with the usage of strong encrypting ciphers. (A list of available ciphers is provided so that the user may specify the cipher to be used by the program)

  2. The encrypted text is 'written' into a user specified picture image. (That is the actual stego is performed by the program) This step is done in such a manner that it is impossible to detect any encrypted text in the image.

The original not encrypted picture
The above image contains encrypted text listed above
key is 123456789 Right click and save it so that you may read the encryption

A set of examples is included in the download so that one may see the effectiveness of the program.

Click to see the screenshot.
This is the applications' main window

Click to see the screenshot.
This is the editor with encrypted text shown.

Concise Usage Description

To encrypt follow the steps below:
  1. Load a bitmap into the program (at least 24x24 pixels in size)

  2. Open the text editor provided and type or paste the text to be encrypted

  3. Enter the key you would like to use for the sake of encryption (at least 9 characters)

  4. Choose the Hash Algorithm, Cipher Algorithm, and Cipher Mode from the lists provided. You will need to use the same setting here when decrypting the image, therefore note your choice

  5. Press the Encrypt button. Note that the text you have entered is replaced with the encrypted text. This is to show the actual text string that is being written to the image

  6. Save the image. (Do not press the Encrypt button twice as it would encrypt the text currently shown in the Editors window)

To decrypt follow the steps below:
  1. 1. Load the encrypted image into the program

  2. Type the encryption key

  3. Choose the encryption scheme used when originally encrypting the text. All Hash Algorithm, Cipher Algorithm and Cipher Mode are to be set to the ones used when the image was being encrypted

  4. Press the Decrypt key.