SHAES

SHAES is a lightweight Python script for encrypting and decrypting files using AES encryption in CBC mode.

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Features

• Encryption: Securely encrypt files with a password.
• Decryption: Decrypt previously encrypted files.
• Error Handling: Alerts for incorrect passwords, non-encrypted files, or missing files.
• Lightweight: Minimal dependencies and easy to use.

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Getting Started

Dependencies

Ensure you have Python 3 installed along with the required library:

pip install pycryptodome

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Installation

1. Clone the repository:

   git clone https://github.com/stigsec/SHAES.git

2. Navigate to the project directory:

   cd SHAES

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Usage

Syntax

python shaes.py {enc/dec} {input_file} {password}

Examples

Encrypt a file:

python shaes.py enc myfile.txt mypassword

This will create an encrypted file named myfile.txt.shase.

Decrypt a file:

python shaes.py dec myfile.txt.shase mypassword

This will create a decrypted file named myfile.txt.

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How It Works

1. Key Derivation: Uses SHA-256 to derive a secure key from the provided password.
2. AES Encryption: Encrypts data using AES in CBC mode with a randomly generated initialization vector (IV).
3. Padding: Ensures data alignment with AES block size using PKCS7 padding.
4. Error Handling: Detects invalid files or decryption attempts with incorrect passwords.

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License

This project is licensed under the GNU General Public License v3.0. See the LICENSE file for more details.

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Developed by stigsec.