晶报signature 加密

api 逆向

<?php
echo base64_encode(hash_hmac('sha1', '1551686354258', '4691ccc32b664b3eb4b1830502b0e478', TRUE));

uid: bbd0712cffbf4bc384011809f1b08698
key = 4691ccc32b664b3eb4b1830502b0e478
signature = base64(hmac(timestamp))