x509certificate - How can I make sure that the remote certificate (public key) is issued/signed by my root ca? -

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in server side, have self-signed ca (certificate , private key). use them issue device certificate, , want make sure if remote cert not signed ca, there exception.

i'm referring links below, seems don't work me, please help:

c# how can validate root-ca-cert certificate (x509) chain?

verify remote server x509certificate using ca certificate file

when receive device certificate, validate signature using ca certificate. that's need (yet need remember when ca certificate expires , reissue it, have either replace device certificates or validate device certificate several cas ensure allow device certificate signed previous ca certificate.


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