Method for passing data between memory of portable tool and reader terminal, comprises creation of single file containing all data blocks their modification in terminal in one operation and return

摘要

The portable tool contains non modifiable data (ICC,ID,K1,K2) and modifiable data (F1,F2,F3,..Fn). All the modifiable data blocks consist of data and security cryptograms and they are used to create a single file which is copied to the terminal memory as an image file. The image file is modified if necessary (for example to make a debit) and returned to the portable tool INDEPENDANT CLAIMS are also included for the following: A portable tool having data blocks contained in a single file. Microcircuit card with data blocks able to be transferred to reader/terminal, the data blocks being all contained in a single file