Apdu commands create file9/1/2023 ![]() ![]() ![]() When P1-P2=0000, if a file ID is provided, then it shall be unique in the following environments: When P1=00, the card knows either because of a specific coding of the file ID or because of the context of execution of the command if the file to select is the MF, a DF, or an EF. Selecting an elementary file sets the selected file and its parent as current files.Īfter the answer to reset, the MF is implicitly selected through the basic logical channel, unless specified differently in the historical bytes or in the initial data string. After such a selection, an implicit current elementary file may be referred to through that logical channel. Selecting a directory (DF) within the card filestore - which may be the root (MF) of the filestore - makes it the current DF. Subsequent commands may implicitly refer to the current file through the logical channel. ![]() The SelectFile method constructs an application protocol data unit (APDU) command that sets a current elementary file within a logical channel. ![]()
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