How to identify java card protocol (T=0 or T=1) using java card technology?

Question

I used following in the code to connect card and get channel

card = terminal.connect("T=1");
channel = card.getBasicChannel();

Here T=1 i.e. protocol is hardcoded. Is there any way from which we can find protocol of the card inserted in card reader ?

javacard.framework.APDU has method getProtocol() but I want protocol at the time of connecting with card.

score 2 · Accepted Answer · answered Mar 01 '16 at 08:43

2

protocol - the protocol to use ("T=0", "T=1", or "T=CL"), or "*" to connect using any available protocol.

So it looks like you could use the wildcard.

answered Mar 01 '16 at 08:43

Arnaud

Or he can use `try .... catch`. _T=1_ is the newest. So he can try _T=1_ and if failed, try _T=0_ and then _T=CL_. – Ebrahim Ghasemi Mar 01 '16 at 12:03

1 Answers1