spksignature - 2021.2 English - UG1400

Syntax

For Zynq and Zynq UltraScale+ MPSoC devices:

[spksignature] <Signature file>                                

spksignature = <signature file>

Description

Imports SPK signature into the authentication certificate. This can be when the user does not want to share the secret key PSK, the user can create a signature and provide it to Bootgen.

Arguments

Specified file name.

Example

For Zynq and Zynq UltraScale+ MPSoC devices:

all:
{
	[ppkfile] ppk.txt
	[spkfile] spk.txt
	[headersignature]headers.sha256.sig
	[spksignature] spk.txt.sha256.sig
	[bootloader, authentication=rsa] fsbl.elf
}

For Versal ACAP:

stage7c:
{
    image
    {
      id = 0x1c000000, name = fpd
      { type = bootimage,       
        authentication=rsa,
        ppkfile = PSK3.pub,
        spkfile = SSK3.pub,
        spksignature = SSK3.pub.sha384.sig,
        presign = fpd_data.cdo.0.sha384.sig,
        file = fpd_e.bin  
      }
    }
}