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cwarden/validateSignedRequest.php

Created February 15, 2013 16:47
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validateSignedRequest.php
<?php
function validateSignedRequest($signedRequest, $key) {
list($signature, $payload) = explode('.', $signedRequest);
$hmac = base64_encode(hash_hmac('sha256', $payload, $key, true));
return $signature == $hmac;
}
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