有写过百度营销-商业开发者中心-PHP签名加密的吗?

$params = [
    'appId' => "",
  'authCode' => "",
  'userId' => "",
  'timestamp' => "",
  'state' => "",
];
ksort($params);
$bytes = base64_encode(json_encode($params));

$key = substr($secretKey, 0, 16);
$aec_offset = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
function encryptAES_CBC_NoPadding($source, $key, $iv): string
{
    $dataLength = strlen($source);
 if ($dataLength % 16 != 0) {
        $dataLength = $dataLength + (16 - ($dataLength % 16));
  }
    $source = str_pad($source, $dataLength, "\0", STR_PAD_RIGHT);
  $encrypted = openssl_encrypt($source, 'AES-128-CBC', $key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv);
 return strtoupper(bin2hex($encrypted));
}

echo encryptAES_CBC_NoPadding($bytes, $key, $aec_offset);
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