Hi,
I have question regarding changing smartcard security pins. Currently I'm
using a towitoko chipdrive to communicate with protected memory cards -
SLE4428 & SLE4442. The SLE4428 is a 3W protocol card, 1KB memory and has 2
byte security pins. The SLE4442 is a 2W protocol card, 256 byte memory and
has 3 byte security pins. When I send a change card pin command to these
cards, only the SLE4442 works correctly. The SLE4428 doesn't work & now I
don't even know what the new changed pins is. The hex command I send is as
below:
SLE4428 "0x00,0x24,0x00,0x00,0x04,2 byte old pins,2 byte new pins"
SLE4442 "0x00,0x24,0x00,0x00,0x06,3 byte old pins,3 byte new pins"
Is the change pin command of SLE4428 different from SLE4442?
Any way to crack what is the smartcard's security pins or reset them?
Thanks!
Regards,
Shen Boon
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