Скачать с ютуб Square Terminal Teardown & Tamper Testing (Part 1) в хорошем качестве

Square Terminal Teardown & Tamper Testing (Part 1)

Watch me destroy a Square Terminal in about 60 mins by erasing the on-board secure keys etc, follows blog at http://colinoflynn.com/2020/04/square.... See additional notes below: APPENDUM: There is a little tamper switch on the "secure board", when putting the board back I didn't put enough screws down to close the switch. When you close that switch the terminal defective message goes away, but the program fails to load... assume now it's wiped the keys due to removing the battery. ICs: On 'secure' board: Cirque 1CA037 Touch controller NXP TDA8034 smart card interface (on video I called it NXP TXD9301, it's not a secure element I just searched wrong part of chip PN). Square K400Q (? 56-pin QFN, looks to have XTAL near it so probably micro) NXP MK21FX512V12 (search for MK21FX512 to find datasheet), main microcontroller with tamper. ST STM32F051K86 (low-power microcontroller) TI ts3a44159 (Analog MUX, not called out in video) ICE5LP2K (very small, not called out in video). For more detail, see 2nd video of security board tear-down.