End-to-End Encryption (E2EE) using AES & RSA

This repository contains code for implementing end-to-end encryption (E2EE) for files using both AES (Advanced Encryption Standard) and RSA (Rivest–Shamir–Adleman) encryption algorithms in both Dart and Python.

Features:

• AES Encryption: Uses AES encryption algorithm for secure file encryption.
• Password Protection: Encrypts and decrypts files with a user-defined password.
• Synchronous Operations: Performs encryption and decryption operations synchronously for simplicity.

Dart AES Implementation(Client Side)

Usage:

1. Import the aes_crypt_null_safe and open_file_plus packages.
2. Initialize an AesCrypt instance, set a password, and use it to encrypt and decrypt files.
3. Open the decrypted file using OpenFile.open method.

Example:

String encryptedFile = await EncryptData.encryptFile(filePath, password);
String decryptedFile = await EncryptData.decryptFile(encryptedFile, password);

Description:

1. AES Encryption: Utilizes AES for file encryption and decryption.
2. Encryption Method: Encrypts a file with a specified path and password.
3. Decryption Method: Decrypts an encrypted file using the same password.
4. File Handling: Prints status messages and opens decrypted files using OpenFile.open.

Dart RSA Implementation(Client Side)

Description:

• RSA Key Generation: Generates RSA key pairs asynchronously.
• JWK Conversion: Converts JSON Web Keys (JWK) to RSA private and public key strings asynchronously.
• Encryption with Public Key: Encrypts a message with a public key asynchronously.

Python Implementation(Server Side)

Usage:

1. Install the pyAesCrypt package using pip install pyAesCrypt.
2. Use the provided EncryptData class to encrypt and decrypt files via command-line arguments.

Command-Line Usage:

• Encrypt a file:

  python main.py path/to/your/file.txt your-password

• Decrypt a file:

  python main.py path/to/your/file.txt.aes your-password --decrypt

Description:

1. AES Encryption: Utilizes AES for file encryption and decryption.
2. Encryption Method: Encrypts a file with a specified path and password.
3. Decryption Method: Decrypts an encrypted file using the same password.
4. File Handling: Prints status messages and provides the decrypted file path.

Note

Ensure to handle and share passwords securely. Encrypted files are saved in the server directory for secure storage.