[openssl] 憑證格式轉換 certificate convert cer to pem / pfx to pem
convert cer to pem 格式指令： openssl x509 -inform der -in certificate.cer -out certificate.pem =============================================================== convert pfx to pem 格式指令： openssl pkcs12 -in certificate.pfx -out certificate.pem -nodes -password pass:keyinpassword