Making an HTTP request with a JSON and base64 encoded payload

[JustinC]

Is it something that can be emailed to you like the other thread?

Base64-encoded HMAC-SHA256 signature?

hey everybody, I annoyed the forum now a couple of times regarding the Amazon Product Advertising API (sorry guys…). The incredible guys from https://airdev.co/ @gaurav now helped me and have setup the API Call for me. The only problem is that the API Call requires a signature and a timestamp. The signature is a “base64-encoded HMAC-SHA256 signature” (see here for more information: http://docs.aws.amazon.com/AWSECommerceService/latest/DG/HMACSignatures.html) Since I am really clueless and f…