🔐 File Encrypter #

Super-fast file encryption library for Flutter, utilizing AES-256 encryption in CBC mode with PKCS5 padding. This package is designed to handle large files efficiently. 🚀

✨ Features #

• 🔒 AES-256 Encryption: Secure your files with a strong encryption standard.
• 🔄 CBC Mode with PKCS5 Padding: Ensures compatibility and security.
• 📂 Handles Large Files: Optimized for encrypting and decrypting big files.
• ⚡ Chunk-Based Encryption: Files are encrypted and decrypted in chunks to improve performance and support large files efficiently.

🚀 Usage #

🔐 Encrypting a File #

import 'package:file_encrypter/file_encrypter.dart';

void main() async {
  String secretKey = await FileEncrypter.encrypt(
    inFilename: 'open_file.mkv',
    outFileName: 'encrypted_file.dat',
  );

  print('🔒 Encryption complete. Secret key: \$secretKey');
}

This will create encrypted_file.dat, an encrypted version of open_file.mkv. The secretKey is a base64-encoded key generated using a cryptographic random number generator.

🔓 Decrypting a File #

import 'package:file_encrypter/file_encrypter.dart';

void main() async {
  String key = 'your_base64_secret_key'; // Use the key from the encryption step

  await FileEncrypter.decrypt(
    key: key,
    inFilename: 'encrypted_file.dat',
    outFileName: 'open_file.mkv',
  );

  print('🔓 Decryption complete.');
}

This will restore open_file.mkv from encrypted_file.dat.

📜 License #

This project is licensed under the BSD-3-Clause License.

For more details, visit the official package page.