import hashlib
from Crypto.Cipher import AES
import base64

def generate_signature(date: str, token_secret: str) -> str:
    key = hashlib.sha256(token_secret.encode()).hexdigest()[:32]
    iv = hashlib.sha256(hashlib.sha256(token_secret.encode()).hexdigest().encode()).hexdigest()[:16]

    cipher = AES.new(key.encode(), AES.MODE_CBC, iv.encode())
    pad_len = 16 - (len(date) % 16)
    padded_date = date + chr(pad_len) * pad_len
    encrypted = cipher.encrypt(padded_date.encode())

    return base64.b64encode(encrypted).decode()

date = "2026-05-20 14:30:00"
token_secret = "votre-token-secret"
signature = generate_signature(date, token_secret)
print(signature)