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      Message encoding

      To prevent errors or ambiguity caused by special characters enclosed in a message, encode the message properly before transmitting it.


      Encoding scenarios

      Encoding method

      For the byte data, such as the signature and the encrypted content, encode the data with the base64 algorithm before transmitting.

      Via the base64 algorithm

      For the HTTPS URL data, perform URL encoding first via the urlencode algorithm before transmitting.

      For example:

      • Original URL: https://www.merchant.com/authorizationResult
      • Encoded URL: https%3A%2F%2Fwww.merchant.com%2FauthorizationResult

      Via the urlencode