# Text Encryptor
(Touch a letter or scroll down for more topics)

## Quick Start

Encryption

- Set a password for the current session.
- Write or paste text into the "Unencrypted Text" area (Section C in the image).
- Press the Encrypt button.
- The encrypted text will appear in the "Encrypted Text" area (Section E in the image).
- Copy the encrypted text to the system clipboard and use it wherever you want, or save it to the app database for later use (F button).

Decryption

- Set a password for the current session.
- Write or paste encrypted text into the "Encrypted Text" area (Section E in the image).
- Press the Decrypt Button. (Note: The decryption algorithm is detected automatically.)
- The decrypted text will appear in the "Unencrypted Text" area (Section C in the image).
- Copy the unencrypted text to the system clipboard and use it wherever you want.

## Steganography

- A steganographic feature is included (concealing text within an image - JPG). A steganographic algorithm (F5 algorithm) is used in combination with the chosen symmetric cipher algorithm to create the final steganogram (JPEG image).
- IMPORTANT NOTE: Some communication applications (like WhatsApp, Viber, Messenger, etc.) can resize or recompress images to reduce bandwidth. Concealed data is corrupted during this process (JPGs use lossy compression). => Please test all your intended workflows and use cases to verify the process.

Make Steganogram

- Set a password for the current session.
- Write or paste the text you want to encrypt (and conceal) into the "Unencrypted Text" area (Section C in the image).
- Tap the "More..." button (bottom-right corner - F).
- Choose "Encrypt and Make Steganogram".
- Select a carrier image (JPG, PNG, BMP).
- Tap the "Continue" button.
- The steganogram will be created and saved (please be patient, this can take some time).

Decrypt from Steganogram

- Set a password for the current session.
- Tap the "More..." button (bottom-right corner - F).
- Choose "Decrypt from Steganogram".
- Select a steganogram.
- The decrypted text will appear in the "Unencrypted Text" area (Section C in the image).
- Copy the unencrypted text to the system clipboard and use it wherever you want.

## Session Password

- The Text Encryptor app does not function like a standard "Vault application". A password is not required to enter the application but is set for the current encryption/decryption session. You may use an unlimited number of passwords for different purposes (notes, emails, communication with persons A, B, C, etc.).

## Forgotten Password

- There is no “backdoor” method to decrypt text without the correct password. If you forget your password, the data is irrecoverable.

## System Clipboard

- Some other systems use the name "pasteboard".
- For more information, search online for terms like: android using copy paste

## A - Import/Export Unencrypted Text

- Various options for importing/exporting unencrypted text to/from the application.
- Copy/Paste to/from the system clipboard, Save/Load files, Send to App, etc.

## B - Encrypt/Decrypt Text

- Encrypt text from the "Unencrypted Text" area and place the result into the "Encrypted Text" area.
- Decrypt encrypted text from the "Encrypted Text" area and place the result into the "Unencrypted Text" area.

## C - Unencrypted Text Area

- Place the text you want to encrypt here.

## D - Set Password Button

- Set a session password.
- The color of this button indicates the current password strength (red = weak, yellow = fair, green = strong).

## E - Encrypted Text Area

- Place the text you want to decrypt here.
- The text in this area turns red when one of the text fields (unencrypted/encrypted) is changed, indicating the data in the other field does not correspond to the current value.
- The text in this area turns blue when the newly encrypted text "has not been used" (copied, saved, etc.).

## F - More Options Button

- Load Text from DB or from File: Load previously saved data from the application database (or from a file).
- Save Text to DB or to File: Save data from the "Encrypted Text" area to the application database (or to a file) for later use.
- Delete Text from DB or Delete File: Delete selected data from the application database (or delete a file).
- + Steganographic features

## G - Import/Export Encrypted Text

- Various options for importing/exporting encrypted text to/from the application.
- Copy/Paste to/from the system clipboard, Save/Load files, Send to App, etc.

## H - Erase Text Areas

- Clear text areas.

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