Authentication Mechanism

import time
import base64
from cryptography.hazmat.primitives import serialization,hashes
from cryptography.hazmat.primitives.asymmetric import padding
from cryptography.hazmat.backends import default_backend

api_key = '<API_KEY>' # api key

timestamp = int(time.time() * 1000) # timestamp is the current time in milliseconds since Unix epoch

path_to_certificate = 'path_to_certificate/certificate_key_file.pem'

with open(path_to_certificate, 'rb') as key_file:
    public_key = serialization.load_pem_public_key(
        key_file.read(),
        backend=default_backend()
    )

payload = f"{api_key}:{timestamp}" # payload is the api key and the timestamp

encrypted = public_key.encrypt(
    payload.encode(),
    padding.OAEP(
        mgf=padding.MGF1(algorithm=hashes.SHA512()),
        algorithm=hashes.SHA512(),
        label=None
    )
)
print(base64.b64encode(encrypted).decode('utf-8'))

const crypto = require('crypto');
const fs = require('fs');
const path = require('path');

// 1. Define your credentials
const apiKey = 'YOUR_ACTUAL_VERTO_API_KEY'; 

// 2. Load your public key file (.pem)
// Change 'public_key.pem' to the actual path of your downloaded file
const publicKeyPath = path.join(__dirname, 'public_key.pem'); 
const publicKey = fs.readFileSync(publicKeyPath, 'utf8');

// 3. Generate the 13-digit UNIX timestamp in milliseconds
const timestamp = Date.now();

// 4. Create the payload string
const payload = `${apiKey}:${timestamp}`;

// 5. Encrypt using RSA-OAEP with SHA-512
const encrypted = crypto.publicEncrypt({
    key: publicKey,
    oaepHash: 'sha512' // Node automatically sets MGF1 to SHA-512 when this is set
}, Buffer.from(payload));

// 6. Convert to Base64
const base64Payload = encrypted.toString('base64');

console.log("--- COPY THIS FOR STEP 4 ---");
console.log(base64Payload);