It can be used to do some reverse engineering, especially with complex CCID commands like the Secure command. I should use it more often to debug issues and understand why a program is working on Windows and not on GNU/Linux. So whatever the system you are using (GNU/Linux, macOS or Windows, and maybe others) Wireshark can help you. Yes, I prefer to NOT use Windows as much as possible. pcapng format) and used Wireshark on macOS to study the file. This time I made the capture on Windows, saved the file on disk (. In my previous article " CCID USB spy using Wireshark" I make the USB trace acquisition on a GNU/Linux system. Not all pinpad readers support the same set of parameters so the situation is complex. The Secure command uses parameters to set the PIN padding, the messages displayed to the user, the min and max PIN lengths, the validation conditions and some other parameters. See here for a list of pinpad readers working with my CCID driver. This CCID Secure command is used with a pinpad reader to make the user enter its PIN code in the pinpad and not on the computer keyboard. And this command is not easy to decode by hand without the CCID specification. The remaining of the CCID frame is not decoded. Or, go to the Wireshark toolbar and select the red Stop button thats located next to the shark fin. Select File > Save As or choose an Export option to record the capture. Only the first CCID byte is decoded as "Message Type: PC_to_RDR_Secure (0圆9)". Select the shark fin on the left side of the Wireshark toolbar, press Ctrl+E, or double-click the network.
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