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About Get Data Command

Posted: Mon Feb 26, 2018 11:56 pm
by Heerden
According to GP 2.1.1 Specification



But when I test in JC30M48CR with Get Data command, only Tag 66, C1 and E0 are supported. Tag 42 and 45 are not supported.
Why is it?

Re: About Get Data Command

Posted: Tue Feb 27, 2018 11:35 pm
by javacardx
I copied some paragraph from GP211 and emphasized some words.
I think that maybe you are right.But I am still puzzled about "It does not mandate".Is there anybody to explain it?
The following meanings apply to SHALL, SHOULD, and MAY in this document:
• SHALL indicates that the statement containing the SHALL must be implemented as defined in this
Specification. It does not mandate the implementation of the statement.
• SHOULD indicates a recommendation. It is strongly recommended to implement the statement as
defined in this Specification.
• MAY indicates an option

Re: About Get Data Command

Posted: Thu Mar 01, 2018 2:49 am
by JavaCardOS
For Tag 42 and 45, the JC30M48CR card are supported. But you must set the tag value with STORE DATA command first.

Re: About Get Data Command

Posted: Wed Mar 07, 2018 5:00 am
by Heerden
Okay, I will try it.