Modern Csv License Key ✧

# 4. Sign payload signature = signing_key.sign(payload.encode()).signature sig_b64 = base64url_encode(signature)

"version": "1.0", "issued_at": "2026-04-16T10:00:00Z", "expires_at": "2027-04-16T10:00:00Z", "features": ["PRO", "API_ACCESS", "AUDIT_LOG"], "seats": 5, "node_lock": "type": "machine_id, "licensee": "Acme Corp", "metadata": "sales_order": "SO-4421" modern csv license key

from cryptography.hazmat.primitives.kdf.hkdf import HKDF from cryptography.hazmat.primitives.ciphers.aead import AESGCM import nacl.signing def generate_license(claims: dict, product_master_key: bytes, signing_key: nacl.signing.SigningKey): # 1. JSON claims -> bytes claims_json = json.dumps(claims).encode('utf-8') "node_lock": "type": "machine_id