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

## Quick Start

Encryption

- Select a file or folder (touch a file/folder icon).
- Tap the Encrypt button (bottom-right corner).
- Set a password.
- A new ".enc file" will be created.
(Note: You can delete/wipe the original file(s) after encryption, or it can be done automatically: Settings: File Encryptor → Wipe Source After Encryption)

Decryption

- Select an encrypted file (touch a file icon).
- Tap the Decrypt button (bottom-right corner).
- Enter the correct password.
- The selected file will be decrypted.

## A - Available Drives and Directories

- User-defined Home/Default directories, available volumes, and shortcuts to application directories + a directory selector (using the SAF directory picker).
- Custom Directories -
  - Encrypted/Decrypted file output directories can be set here (if enabled in Settings: File Encryptor → Encrypted/Decrypted Files Destination)

## B - Current Volume Parameters

- Available space / Volume size

## C - Selected File/Folder

- Long-click to select a folder
- Short-click to select a file
- Or touch a file/folder icon
- The selected file or folder can be:
  - Encrypted or Decrypted (depending on the selected file's state) using the Encrypt/Decrypt button (E);
  - Renamed, Opened, Deleted, or Wiped using the "More..." button (bottom, second from right);
  - Note: Long-clicking on a file performs the same action as using the "More..." button on the selected file/folder.
- Multiple File Selection

## D - Encrypted File

- Encrypted files can be recognized by the .enc extension, purple background, and “lock” icon.

## E - Encrypt/Decrypt Button

- Encrypt or decrypt files or folders (depending on the selected item).

## F - Compression ON/OFF

- Activate/deactivate data compression.

## G - Go to Main Menu

- Go directly to the application's Main Menu.

## H - More Button

- Selected file/folder can be Renamed, Deleted, Wiped, or Opened (file only).

## I - Set Session Password

- Set a session ("master") password.
- 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.

## Multiple File Selection

- Multiple file selection (batch processing) - (PRO version feature)
- This can be activated/deactivated in the application settings: Settings → File Encryptor: Multiple File Selection

## More...

- The encryption/decryption process can be interrupted using the "Back" button.
- Wiping:
  - Data is physically overwritten before deletion (cannot be recovered).
  - Warning: Due to caching, reallocation mechanisms, and wear-leveling in modern systems and hardware/driver levels, there can be a discrepancy between the "reported file system state" (reported to the app) and the "real/physical memory state". There is a possibility that on some devices (depending on the system/flash memory driver), the wipe feature will not work 100% effectively. There is no way to be absolutely sure, as the app always works with a "virtual" image of the physical media.
- Icons

  | Folder
  | Read-Only Folder
  | File (more types: image, video, etc.)
  | Read-Only File (more types: image, video, etc.)
  | Encrypted File
  | Read-Only Encrypted File
  | Back to Parent Folder

- Incorrect Password
  - There is no way to decrypt any file without the correct password.

## SAF Mode (Android 5+)

Where?

- Button or

Or it can be used for output operations only (if custom destination folders are activated in the application settings - Settings: File Encryptor → Encrypted/Decrypted Files Destination).
If you set the destination(s) to "Ask", the following dialog will be displayed for all encryption/decryption tasks:
Background
In Android 4.4 (KitKat), Google restricted third-party (non-preinstalled) applications from writing to external/removable storage. This decision crippled many applications, making some useless. Pressure on Google led to a compromise solution integrated into Android 5. Applications can regain write permission to external storage using a new API with the SAF (Storage Access Framework). However, generally, external SD cards are usually much less reliable (especially certain device/SD card combinations) than internal memory.
First Start

- A directory picker will appear. You need to select the directory (or volume) you want to work with.
- Tap the More button (top-right corner) and choose Show SD card.
- Tap the Menu button (top-left corner) and choose the storage you want to use.
- Tap SELECT (bottom).

Limitations
There are some limitations in SAF mode you should be aware of:

- The SAF API offers lower performance (often much lower) than standard direct file access mode (especially with directories containing many files/subdirectories).
- Home/Custom directories cannot be set in SAF; however, the last-picked SAF URI is automatically saved: Home Button → Go to Last Picked SAF Dir.
- The wipe feature does not work. If the “Wipe after Encryption” option is checked in settings, files will only be deleted. If you use "Select Destination (SAF)" with read-only source files, the files will not be deleted at all.
- The “Open File” function will only work if the destination application can decode the SAF URI.

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