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A simple, efficient browser-based file encryption and protection tool that supports encrypting and decrypting various types of files.

• Uses AES-GCM 256-bit encryption algorithm to protect file security
• Supports both password and recovery key protection methods
• Local processing, files are not uploaded to servers

• English
• Simplified Chinese
• Traditional Chinese

• Intuitive interface design, easy to operate
• Dark/light mode automatically adapts to system settings
• Real-time display of encryption/decryption progress
• Support for large file processing (up to 2GB)
• Support for decrypting files using recovery keys
• Support for PWA (Progressive Web App) technology, can be installed in browsers and used offline
• Support for logging, recording encryption/decryption operation related information

• Chunk processing for large files to avoid browser crashes
• Supports file integrity verification
• Local storage of language and theme preferences

• HTML5 + CSS3
• JavaScript (ES6+)
• Web Crypto API
• Font Awesome icon library
• Neumorphism design style

Directly visit the VENC website to start using it.

1. Clone the repository

   git clone https://github.com/landeyucc/venc.git
   cd venc

2. Start the HTTP server

   npx http-server . -p 8000

3. Open http://127.0.0.1:8000 in your browser

1. Select "Encrypt" mode
2. Click the "Select file to encrypt" button and choose the file you want to encrypt
3. Set an encryption password of at least 4 characters
4. Click the "Start Encryption" button
5. After encryption is complete, click "Download encrypted file" and "Download key file" to save the results

There are two decryption methods:

• Password mode: Decrypt using the password set during encryption
• Recovery key mode: Decrypt using the recovery key file

1. Select "Decrypt" mode
2. Click the "Select encrypted file (.venc)" button and choose the file you want to decrypt
3. Select the "Use Recovery Key" option
4. Click the "Select key file" button and choose the corresponding .vkey file
5. Click the "Start Decryption" button
6. After decryption is complete, click "Download decrypted file" to save the result

1. Select "Decrypt" mode
2. Click the "Select encrypted file (.venc)" button and choose the file you want to decrypt
3. Select the "Use Password" option
4. Enter the password set during encryption
5. Click the "Start Decryption" button
6. After decryption is complete, click "Download decrypted file" to save the result

1. Please keep your encryption password and recovery key file properly; once lost, you will not be able to decrypt the files
2. It is recommended to save the encrypted file, recovery key, and password simultaneously to prevent accidental loss
3. The key file (.vkey) contains important encryption information, please keep it properly. You can use the recovery key to decrypt directly when you forget your password

├── css/                # Style files
│   └── style.css       # Main style file
├── img/                # Image resources
│   └── venc.ico        # Website icon
├── js/                 # JavaScript files
│   ├── main.js         # Main script file
│   ├── i18n.js         # Internationalization support
│   ├── footer.js       # Footer related script
│   └── cryptoWorker.js # Encryption and decryption worker thread
├── lang/               # Language files
│   ├── en-US.js        # English translation
│   ├── zh-CN.js        # Simplified Chinese translation
│   └── zh-TW.js        # Traditional Chinese translation
├── index.html          # Main page
└── README.md           # Project description document

• Chrome (Recommended)
• Firefox
• Safari
• Edge

• Maximum file size: 2GB (Avoid processing overly large files, which may cause browser crashes)
• Browser must support Web Crypto API
• Encryption speed depends on device performance and file size