Issues calculating signature for Amazon Marketplace API
问题 I’m trying to calculate a signature to make Amazon Marketplace API calls, but I keep getting the following error: The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details. I’ve wrapped the signature creation process into a class: <?php namespace App\Marketplace\Amazon; class Signature { protected $signedString; public function __construct($url, array $parameters,