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Root certificate
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1) generate private key
openssl genpkey -algorithm RSA -out root.key.pem -pkeyopt rsa_keygen_bits:4096 -aes-256-cbc
2) create root certificate signing request
openssl req -new -key root.key.pem -out root.req.pem
3) self-sign root certificate request
openssl x509 -req -in root.req.pem -extfile openssl.cnf -extensions v3_ca -days 3650 -signkey root.key.pem -out root.cert.pem
Server certificate
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1) generate private key, same procedure as root
2) create certificate signing request
openssl req -new -key server.key.pem -out server.req.pem
3) sign certificate
openssl x509 -req -in server.req.pem -extfile openssl.cnf -extensions v3_usr -CA root.cert.pem -CAkey root.key.pem -CAcreateserial
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