nyxcrypta 1.3.1

Cryptography tool based on RSA and AES

NyxCrypta

NyxCrypta is a Python cryptography library that combines asymmetric RSA encryption and symmetric AES encryption to secure your data efficiently and easily.

Features

• 🔒 Hybrid encryption: Combines AES-256 and RSA (2048 to 4096 bits)
• 🎯 Configurable security levels: Standard, High, and Paranoid
• 🔑 Key management: Simple generation and use of RSA key pairs
• 📚 Intuitive command-line interface
• 🛡️ Proactive security: integrated file and permissions checks

Installation

pip install NyxCrypta

Quick guide

1. Key generation

nyxcrypta keygen -o ./keys -p "my_strong_password"

This command generates a pair of RSA keys and saves them in the specified folder.

2. File encryption

nyxcrypta encrypt -i secret.txt -o encrypted.nyx -k ./keys/public_key.pem

3. File decryption

nyxcrypta decrypt -i encrypted.nyx -o decrypted.txt -k ./keys/private_key.pem -p "my_strong_password"

4. Data encryption

nyxcrypta encryptdata -d "my data" -k ./keys/public_key.pem

5. Data decryption

nyxcrypta decryptdata -d "006bd6203029" -k ./keys/private_key.pem -p "my_stong_password"

Security levels

NyxCrypta offers three levels of security:

1. STANDARD (default) :

   • RSA 2048 bits
   • SHA-256 for OAEP padding

2. HIGH :

   • RSA 3072 bits
   • SHA-256 for OAEP padding

3. PARANOID:

   • RSA 4096 bits
   • SHA-256 for OAEP padding

The security level is selected via the --securitylevel option:

nyxcrypta --securitylevel 2 encrypt -i secret.txt -o encrypted.nyx -k ./keys/public_key.pem

Technical implementation

• Use of AES-256 in CBC mode for symmetrical encryption
• AES key encryption with RSA-OAEP
• Secure generation of IV (Initialization Vector) for each operation
• Automatic data padding management

Best security practices

1. Key management :

   • Store private keys securely
   • Limit access to key files

2. File selection:

   • Always check input and output file paths
   • Make sure you have the necessary permissions

3. Security level :

   • The STANDARD level is sufficient for most uses.
   • Use higher levels for specific needs

Python example

from nyxcrypta import NyxCrypta, SecurityLevel

# initialization
nx = NyxCrypta(SecurityLevel.HIGH)
password = "my_strong_password"

# Keys generation
nx.save_keys("./keys", password)

# Encryption & Decryption
nx.encrypt_file("secret.txt", "encrypted.nyx", "./keys/public_key.pem")
nx.decrypt_file("encrypted.nyx", "decrypted.txt", "./keys/private_key.pem", password)
nx.encrypt_data("données secrètes".encode("utf-8"), "./keys/public_key.pem")
nx.decrypt_data(bytes.fromhex("023gna5donnéescryptées"), "./keys/private_key.pem", password)

Dependencies

• cryptography>=3.3.2
• argon2-cffi>=20.1.0
• cffi>=1.0.0

License

NyxCrypta is distributed under the MIT license. See the LICENSE file for more details.

Authors

Division of Cyber Anarchy (DCA)

• Malic1tus
• Calypt0sis
• NyxCrypta
• ViraL0x

Contact : [e-mail] [e-mail] [e-mail] [e-mail]

Github : https://github.com/Division-of-Cyber-Anarchy/

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Simplicity is the ultimate sophistication. - Leonardo da Vinci