Using OpenSSL tools
# openssl genrsa -out private_key.key 2048
- Create CSR (certificate signing request)
# openssl req -new -key private_key.key -out csr_file.csr
# openssl x509 -req -days <365> -in csr_file.csr -signkey private_key.key -out certificate.cer
- Check Certificate Information
# openssl x509 -noout -text -in certificate.cer
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