Using nrfutil to generate verification key SDK12.1

[mcau1]

Hi,

I am trying to use nrfutil to generate my verification key.

However in the bootloader the key has this format

__ALIGN(4) const uint8_t pk[64] =
{
    0x6e, 0x76, 0x24, 0x50, 0x38, 0xb6, 0xed, 0x60, 0xc3, 0x60, 0x12, 0x50, 0x00, 0xd2, 0x25, 0x0f, 0xee, 0x37, 0xbf, 0x00, 0x02, 0x6b, 0x50, 0x92, 0x80, 0x32, 0x42, 0x2e, 0xd6, 0x68, 0xde, 0xdf, 
    0x3b, 0xcf, 0xa4, 0x6a, 0x3e, 0x45, 0x9b, 0xb3, 0xb1, 0x3c, 0xa3, 0x39, 0xcc, 0x95, 0x58, 0x36, 0xcd, 0x6d, 0x7e, 0x1f, 0xa1, 0xab, 0x79, 0x05, 0x35, 0x2d, 0x2a, 0xda, 0x19, 0xdb, 0x88, 0xce
};

Using nrfutil.exe I get in the format

static uint8_t Qx[] = { 0x54, 0x62, 0xbd, 0x19, 0x9c, 0x2f, 0xdd, 0xf1, 0xae, 0xc1, 0x89, 0xf0, 0xe7, 0x6a, 0x6a, 0xec, 0x3b, 0x4f, 0x20, 0x73, 0xda, 0x12, 0x42
, 0xae, 0x68, 0x78, 0xf3, 0x95, 0xbe, 0xd1, 0x8b, 0x9a };

static uint8_t Qy[] = { 0xc3, 0xc6, 0x2d, 0x5a, 0xa7, 0x10, 0x8e, 0xe0, 0x66, 0x1c, 0x95, 0x17, 0x80, 0x38, 0xd6, 0xd3, 0xa8, 0x52, 0xd2, 0xce, 0xfc, 0xd9, 0x80
    , 0x16, 0x6d, 0xb7, 0x17, 0xeb, 0xd6, 0x95, 0x4b, 0xb1 };

Do I need to reformat the VK or how to I get the VK into my code?

Thanks

[bjorn-spockeli]

You're using an older version of nrfutil. You must use nrfutil v1.5.0 to generate keys for the Secure Bootloader in SDK v12.1, the newest version is available from this GitHub repo.

Best regards

Bjørn

[mcau1]

Thank you just want to check is there anywhere to download as an install. Running a python program from source is a massive pain in comparison. Thanks

[bjorn-spockeli]

I am afraid that we do not have an installer for nrfutil, but you can create an executable after you have installed it from source. i.e. first run running python setup.py install and then pyinstaller nrfutil.spec.