MareArts Crystal - High-performance encryption library

Python encryption library for software licensing and data protection. Simple, fast, and cross-platform.

🚀 Installation

pip install marearts-crystal

Requirements: Python 3.9-3.12, Windows/macOS/Linux

Quick Start

License Key Generation

from marearts_crystal import ma_crystal

mask = ma_crystal("your-company-secret")

# Generate license key with signature
today = mask.get_today_date()  # "2025-09-12"
expire = mask.generate_end_date(years=1)  # "2026-09-12"
license_key, signature = mask.generate_serial_key("customer@email.com", today, expire)

print(f"License Key: {license_key}")
# Output: License Key: MAEV2:gAAAAABow91CXuG7dJR3eAWpEXj67RP-qboPAHiDGpVfd2dGN5yBXp...

print(f"Signature: {signature}")
# Output: Signature: a21521da5beb6d7c

# Validate license
result = mask.validate_serial_key("customer@email.com", license_key)
if result:
    start_date, end_date, signature = result
    # start_date = "2025-09-12", end_date = "2026-09-12", signature = "a21521da5beb6d7c"
    if mask.validate_date(start_date, end_date):
        print(f"✅ License active until {end_date}")
        # Output: ✅ License active until 2026-09-12

# Using signature for tracking
license_db = {}  # Your database

# Store license with signature
license_key, signature = mask.generate_serial_key("user@email.com", today, expire)
license_db[signature] = {
    "email": "user@email.com",
    "key": license_key,
    "created": today
}

# Later, verify and track
result = mask.validate_serial_key("user@email.com", license_key)
if result:
    start, end, sig = result
    print(f"License {sig} is valid")  # Use signature as ID

File Encryption

# Encrypt file
with open("document.pdf", "rb") as f:
    file_data = f.read()  # Read original file (e.g., 241979 bytes)

encrypted = mask.encrypt_data(file_data)
print(f"Encrypted size: {len(encrypted)} bytes")
# Output: Encrypted size: 322724 bytes

with open("document.pdf.enc", "wb") as f:
    f.write(encrypted)

# Decrypt file
with open("document.pdf.enc", "rb") as f:
    encrypted_data = f.read()

decrypted = mask.decrypt_data(encrypted_data)
print(f"Decrypted size: {len(decrypted)} bytes")
# Output: Decrypted size: 241979 bytes (matches original)

with open("document_decrypted.pdf", "wb") as f:
    f.write(decrypted)
print("✅ File successfully decrypted")
# Output: ✅ File successfully decrypted

More Examples

API Reference

Basic Methods

Method	Description	Example
generate_serial_key(username, start_date, end_date)	Generate a license key with signature	key, signature = mask.generate_serial_key("user", "2025-09-10", "2025-12-31")
validate_serial_key(username, serial_key)	Validate a license key	result = mask.validate_serial_key("user", key) # Returns (start_date, end_date, signature)
encrypt_string(text)	Encrypt text	encrypted = mask.encrypt_string("secret")
decrypt_string(encrypted)	Decrypt text	text = mask.decrypt_string(encrypted)
encrypt_data(bytes)	Encrypt binary data	encrypted = mask.encrypt_data(b"data")
decrypt_data(encrypted)	Decrypt binary data	data = mask.decrypt_data(encrypted)

Utility Methods

Method	Description	Example
get_today_date()	Get today's date (YYYY-MM-DD)	today = mask.get_today_date()
generate_end_date(years, months, days)	Calculate future date	expire = mask.generate_end_date(years=1)
validate_date(start, end)	Check if current date is in range	valid = mask.validate_date("2025-09-10", "2025-12-31")
is_v2_serial_key(key)	Check if key uses V2 format	is_v2 = mask.is_v2_serial_key(key)
is_v2_data(data)	Check if data uses V2 encryption	is_v2 = mask.is_v2_data(data)
string_to_secret_key(input_string)	Derive key from string	key = mask.string_to_secret_key("password")
secret_key_to_string(secret_key, encrypted)	Decrypt with provided key	text = mask.secret_key_to_string(key, encrypted)

🔗 MareArts AI Package Family

MareArts Crystal is part of our comprehensive AI and utility package ecosystem:

Package	Description	Use Case
marearts-anpr 🚗	License Plate Recognition	Vehicle identification, parking systems, traffic monitoring
marearts-road-objects 🛣️	Road Object Detection	Traffic analysis, smart city applications, safety systems
marearts-crystal 🔐	Encryption & Licensing	Software licensing, data security, key management
marearts-xcolor 🎨	High-performance color extraction	Color detection apps, dominant color query systems

📄 License

MIT License - Free for commercial and personal use.

Free to use on github
https://github.com/MareArts/marearts-crystal