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I run these command to generate private and public keys :

openssl genrsa -out keypair.pem 2048 openssl rsa -in keypair.pem -pubout -out publickey.crt

and then I tried to view certicate information using

openssl x509 -text -in publickey.crt -noout

but I am getting this error:

unable to load certificate 140464089126208:error:0909006C:PEM routines:get_name:no start line:../crypto/pem/pem_lib.c:745:Expecting: TRUSTED CERTIFICATE

any idea of why and how can I manage to view the certificate ?

Thanks

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    You have generated private and public keys but not any certificate. Commented May 22, 2023 at 16:02
  • @admstg Why don't you make that an answer? Commented May 22, 2023 at 20:46

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You have generated private and public keys but not any certificate.

You need to create a certificate request with openssl req -key keypair.pem -new -out domain.csr then else autosign the certificate with openssl x509 -signkey dkeypair.pem -in domain.csr -req -days 365 -out domain.crt or request your PKI to sign the .csr

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