搞死我了 php的加密(sha1withrsa)

主要是格式问题

$sercet = "一行格式的字符串秘钥";
  
    public function getSign($paramsStr,$sercet)
    {
 $signature = "";
 $str = chunk_split( $sercet, 64, "n" );
 $key = "-----BEGIN RSA PRIVATE KEY-----n$str-----END RSA PRIVATE KEY-----n";
 openssl_sign( $paramsStr  ,$signature ,$key  );

 return base64_encode($signature);
    }