SSL証明書のフォーマット変換

PEMにCRT形式

openssl x509 -in www.x.com.crt -out www.x.com.pem
openssl x509 -in mycert.crt -out mycert.pem -outform PEM
openssl x509 -inform DER -in yourdownloaded.crt -out outcert.pem -text
openssl x509 -in mycert.crt -out mycert.pem -outform PE

名前の変更
、我々はfullchain.crt直接fullchain.pemのリネーム」缶
privkey.pemリネームprivkey.key