OpenSSL Certificate (Version 3) with Subject Alternative Name

Question

I\'m using the OpenSSL command line tool to generate a self signed certificate. It seems to be working correctly except for two issues. I can\'t get it to create a .cer with a S

Answer 1

The v3_req is required with the entry subjectAltName in the config file. The command

openssl x509 ... -extfile openssl.cnf -extensions v3_req

will insert the SAN into the certificate.