Method authenticate

python/ccxt/pro/cex.py:1455–1475

(self, params={})

            future.resolve(True)

    async def authenticate(self, params={}):
        url = self.urls['api']['ws']
        client = self.client(url)
        messageHash = 'authenticated'
        future = client.reusableFuture('authenticated')
        authenticated = self.safe_value(client.subscriptions, messageHash)
        if authenticated is None:
            self.check_required_credentials()
            nonce = str(self.seconds())
            auth = nonce + self.apiKey
            signature = self.hmac(self.encode(auth), self.encode(self.secret), hashlib.sha256)
            request = {
                'e': 'auth',
                'auth': {
                    'key': self.apiKey,
                    'signature': signature.upper(),
                    'timestamp': nonce,
                },
            }
            self.watch(url, messageHash, self.extend(request, params), messageHash)
        return await future