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SC573 security problem

SC573 security problem

I set public and private key in OTP memory using API functions. Then lock the device with function 'adi_rom_lock'. All functions returned 'true'. Then I reset the device. But device is OPEN. I can load unsecure programs to it and read OTP. I try to read lockbit in OTP memory location 0x48C: it is '1'. 

I repeat this procedure at another chip with the same result. The chip revision is 0.0.

The same procedure on Blackfin BF707 (it has the same security system) lock the part without any problem.

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  • Hello, thank you for your reply. Yes, I edited an email and sent it to processor support@analog.com , this problem is described in the email. Is there a special person to deal with this problem or a robot? How soon will I receive this patch? Will my email be answered? How does this patch work?

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