NXP Semiconductors
AN13500
EdgeLock A5000 Secure Authenticator for electronic anti-counterfeit protection using device-to-device
authentication
Figure 38. Control unit authentication flow
4.7.2.1 Step 1: Machine device certificate validation
The first step the machine sends the machine certificate (
machine.pem
) to the control
unit for validating the certificate. We use again the OpenSSL
verify
command-line tools
to validate the certification chain.
openssl verify -CAfile nxp_a5000_root_ca.pem -untrusted
nxp_a5000_intermediate_ca.pem machine.pem
AN13500
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Application note
Rev. 1.0 — 28 March 2022
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