Google Distance matrix for work is giving me invalid request when signing request with clientId and crypto key

Question

I am trying to obtain distance between two locations using Google Distance matrix API. I am using a signature as well to sign my request to Google.

Here is my request URI:

https://maps.googleapis.com/maps/api/distancematrix/json?origins=Vancouver+BC|Seattle&destinations=San+Francisco|Victoria+BC&mode=driving&departure_time=1435234502&client=my-client-id&signature=my-obtained-signature.

I am using epochtime in UTC to send the request as mentioned in Google API documentation. But I am getting a response as mentioned below:

{ 
   "destination_addresses" : [],
   "origin_addresses" : [], 
   "rows" : [], 
   "status" : "INVALID_REQUEST" 
}

---

Answer 1

You need an API KEY to call Google Map Services

https://developers.google.com/maps/documentation/javascript/get-api-key?hl=En