const crypto = require('crypto');

function generateSignature(date, tokenSecret) {
    const key = crypto.createHash('sha256').update(tokenSecret).digest('hex').slice(0, 32);
    const fullHash = crypto.createHash('sha256').update(tokenSecret).digest('hex');
    const iv = crypto.createHash('sha256').update(fullHash).digest('hex').slice(0, 16);

    const cipher = crypto.createCipheriv('aes-256-cbc', key, iv);
    let encrypted = cipher.update(date, 'utf8', 'base64');
    encrypted += cipher.final('base64');

    return encrypted;
}

const date = "2026-05-20 14:30:00";
const tokenSecret = "votre-token-secret";
const signature = generateSignature(date, tokenSecret);
console.log(signature);