  - **PEM:** (\*.crt) PEM Text format with headers
  - **PEM chain:** (\*.pem) Concatenated text format of the complete certificate chain in one PEM file
  - **PEM + key:** (\*.pem) Concatenation of the certificate and the unencrypted private key in one PEM file
  - **PEM + PKCS#8:** (\*.pem) Concatenation of the certificate and the encrypted private key in PKCS#8 format in one file
