key to pem
openssl rsa -in privatge.key -text > domain.pem
ca-bundle
cat USERTrust_RSA_Certification_Authority.crt Sectigo_RSA_Domain_Validation_Secure_Server_CA.crt > 도메인.ca-bundle
==========
1.pem
cat 도메인crt 체인.ca-bundle > cert.pem
2. pem -> pfx
openssl pkcs12 -export -name 도메인 -in cert.pem -inkey PRIVATE_KEY.key -out 7customs.com.pfx
3. pfx -> jks
keytool -importkeystore -srckeystore 7customs.com.pfx -srcstoretype pkcs12 -destkeystore 7customs.com.jks -deststoretype jks
