I'm trying to develop an integration with the itau Itau Shopline online ticket system in PHP, but every time I send the data to the communication URL I get a page with this message:
Problems in encryption or the value field is incorrect. Enter in contact SOS Itaú Bankline.
Originally the script for authentication is in Java, however I found this class in PHP that was recreated based on class original in Java.
What could be the reason for this error?