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Documentation Index

Fetch the complete documentation index at: https://mintlify.com/Anzi001/Secure-Crypt/llms.txt

Use this file to discover all available pages before exploring further.

Secure Crypt is designed to get out of your way — open the app, pick a file, enter a password, and your file is encrypted. This guide walks you through the full encrypt-and-decrypt cycle for a single file, then shows you how to use Quick View for cases where you just need to open a locked file temporarily without permanently unlocking it.
All encryption and decryption operations run on a background thread, so the Secure Crypt window stays responsive while your file is being processed. A progress bar popup appears during the operation.

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Encrypt and Decrypt Your First File

1

Launch Secure Crypt

Open the Secure Crypt executable for your platform:
  • Windows: Double-click SecureCrypt_Win.exe
  • macOS: Double-click SecureCrypt_Mac.app (after completing the first-launch Right-Click → Open step)
  • Linux: Run ./SecureCrypt_Linux in a terminal, or double-click from your file manager
The main window opens, showing the Quick View buttons at the top and the permanent Lock / Unlock tools below.
2

Click LOCK FILE and select a file

Under the Permanent Tools section, click the 🔒 LOCK FILE button. A standard file-picker dialog will open. Browse to any file you want to encrypt and select it.
3

Enter and confirm a password

A password dialog will appear. Type your password and click OK. A second dialog immediately asks you to confirm the password — type it again and click OK.
There is no password recovery mechanism. If you forget the password you set here, the encrypted file cannot be recovered. Choose a password you will remember, or store it securely in a password manager.
4

Wait for processing to complete

A small Processing… popup with an indeterminate progress bar appears while the file is being encrypted. When it closes and a success message is shown:
  • The original file has been deleted.
  • In its place is a new file with the same name plus a .scrypt extension (e.g., report.pdf → report.pdf.scrypt).
The encrypted file contains a 1-byte lock flag, a 16-byte random salt, a 12-byte random nonce, and the AES-256-GCM ciphertext — all in a single binary blob.
5

Decrypt the file by clicking UNLOCK FILE

To get your original file back, click the 🔓 UNLOCK FILE button. Select the .scrypt file you just created from the file picker.
6

Enter the same password

The password dialog appears again. Enter the same password you used when locking the file and click OK.
7

The original file is restored

Once the progress popup closes and a success message appears:
  • The .scrypt file has been deleted.
  • The original file has been restored with its original name and contents exactly as they were before encryption.

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Try Quick View

Quick View decrypts a file into a secure temporary directory, opens it in your system’s default application, and waits for you to click Save Edits & Relock before re-encrypting it — all without permanently unlocking the file. It is the recommended way to work with files that are under Mandatory Lock.
1

Click QUICK VIEW FILE

In the Secure Crypt main window, click the ⚡ QUICK VIEW FILE (Auto-Relock) button at the top. A file picker dialog opens, filtered to .scrypt files only. Select the encrypted file you want to view.
2

Enter the password

Enter the file’s password in the dialog that appears and click OK. Secure Crypt decrypts the file into a temporary directory and opens it in the default application for that file type (e.g., a PDF viewer for .pdf, a text editor for .txt).
3

View or edit the file in its default application

Work with the file normally. You can make and save changes directly inside the application that opened it.A small “File opened in temporary view mode” dialog stays on top of other windows as a reminder that the file is currently decrypted.
Before clicking Save Edits & Relock, make sure you have saved your changes inside the application and closed the file there. If the file is still open in another application when you relock, Secure Crypt may not be able to read the latest version.
4

Click Save Edits & Relock

When you are done, click 🔒 SAVE EDITS & RELOCK in the Secure Crypt dialog. The app reads the (possibly modified) file from the temp directory, generates a new random salt and nonce, re-encrypts using your password, and writes the result back to the original .scrypt file. The temporary directory is then deleted.A “Changes saved. File re-locked.” message confirms that the operation is complete.

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Next Steps

Locking Files and Folders

Learn how to use Lock File, Lock Folder, Force Lock, and Mandatory Lock, and understand when to use each mode.

Quick View In Depth

Explore how Quick View works for both files and folders, including editing in place and the automatic relock flow.

Sharing Encrypted Files

Best practices for sharing .scrypt and .scryptfold files with others, including the bundled README for recipients.

Encryption Details

A technical reference covering the binary file format, PBKDF2 key derivation parameters, AES-256-GCM, and the Mandatory Lock flag byte.

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