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Hello, everyone. If data is a integer, 0xff81 and 0x0081 how to code in der( distinguished encoding rule) ? It says so in the specification :"If the contents octets of an integer value encoding consist of more than one octet,then the bits of the first octet and bit 8 of the second octet: shall ...
There is another transaction, chip simulation magnetic stripe card transaction. The first command is select (PPSE and mastercard application); The next command is GPO; The next command is read record; The last command is compute cryptographic checksum.
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