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<?php
declare(strict_types=1);
namespace Codenixsv\BittrexApi\Middleware;
use Psr\Http\Message\RequestInterface;
use Closure;
class Authentication
{
/** @var string */
private $key;
private $secret;
private $nonce;
/**
* Authentication constructor.
* @param string $key
* @param string $secret
* @param string $nonce
*/
public function __construct(string $key, string $secret, string $nonce)
$this->key = $key;
$this->secret = $secret;
$this->nonce = $nonce;
}
* @param callable $next
* @return Closure
public function __invoke(callable $next)
return function (RequestInterface $request, array $options = []) use ($next) {
$request = $this->addAuthQueryParams($request);
$sign = $this->generateSign($request->getUri()->__toString());
$request = $request->withAddedHeader('apisign', $sign);
return $next($request, $options);
};
* @param RequestInterface $request
* @return RequestInterface
private function addAuthQueryParams(RequestInterface $request): RequestInterface
parse_str($request->getUri()->getQuery(), $params);
$params['nonce'] = $this->nonce;
$params['apikey'] = $this->key;
$uri = $request->getUri()->withQuery(http_build_query($params));
return $request->withUri($uri);
* @param string $uri
* @return string
private function generateSign(string $uri): string
return hash_hmac('sha512', $uri, $this->secret);
codenix-sv /
bittrex-api
